Ford Fusion: Climate Control System - General Information / Climate Control System - Vehicles With: Electronic Manual Temperature Control (EMTC). Diagnosis and Testing

• For an inoperative blower motor, GO to Pinpoint Test J
• For all other blower motor symptoms, GO to Pinpoint Test K

• Fuse(s)
• Wiring, terminals or connectors
• FCIM

• Communication network
• FCIM
• APIM

• CHECK the high side system pressure. If the pressure is below the A/C pressure relief valve open pressure, 3,447-4,137 kPa (500-600 psi), INSTALL a new A/C Compressor.
• REFER to the appropriate procedure in Group 412-00.

• IPC information display settings
• Non-Ford approved remote start system installed

• VERIFY Remote Start - Message Center Set To Auto, or Remote Start - Message Center Set To Last User Settings.
  REFER to: Climate Control System - Vehicles With: Electronic Manual Temperature Control (EMTC) - System Operation and Component Description (412-00 Climate Control System - General Information, Description and Operation).
  
• VERIFY module communications network operation. DIAGNOSE Diagnostic Trouble Codes (DTCs) if present.

Normal Operation and Fault Conditions

The A/C pressure transducer receives a ground from the PCM. A 5-volt reference voltage is supplied to the A/C pressure transducer from the PCM. The A/C pressure transducer then sends a voltage to the PCM to indicate the A/C pressure.

DTC Fault Trigger Conditions

Possible Sources

• Wiring, terminals or connectors
• A/C pressure transducer
• PCM

Visual Inspection and Pre-checks

• Inspect for loose or corroded PCM and A/C pressure transducer connections.

• Allow the A/C system to stabilize to the outside ambient temperature.

• Ignition ON.

• Using a diagnostic scan tool, view PCM Parameter Identifications (PIDs).

• With the manifold gauge set connected, compare the pressure readings of the manifold gauge set and the PCM ACP_PRESS PID.

• Ignition OFF.

• Disconnect PCM 1.5L C1915B, 2.0L C1381B, 2.5L C1551B, or 2.7L C1231B .

• Disconnect A/C pressure transducer C1260 .

• Disconnect Generator current sensor C1645 .

• Disconnect Turbocharger boost pressure (tcbp) sensor C1694 (if equipped).

• Ignition ON.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C1260-1		Ground
  C1260-2		Ground
  C1260-3		Ground

• Ignition OFF.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C1260-1		Ground
  C1260-2		Ground
  C1260-3		Ground

• Measure:
  Click to display connectors

    1.5L

  
  

  Positive Lead	Measurement / Action	Negative Lead
  C1260-1		C1915B-18
  C1260-2		C1915B-52
  C1260-3		C1915B-11

  
  Click to display connectors

    2.0L

  
  

  Positive Lead	Measurement / Action	Negative Lead
  C1260-1		C1381B-18
  C1260-2		C1381B-52
  C1260-3		C1381B-11

  
  Click to display connectors

    2.5L

  
  

  Positive Lead	Measurement / Action	Negative Lead
  C1260-1		C1551B-53
  C1260-2		C1551B-44
  C1260-3		C1551B-52

  
  Click to display connectors

    2.7L

  
  

  Positive Lead	Measurement / Action	Negative Lead
  C1260-1		C1231B-18
  C1260-2		C1231B-52
  C1260-3		C1231B-11

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C1260-1		C1260-2
  C1260-1		C1260-3
  C1260-2		C1260-3

• Ignition OFF.

• Disconnect and inspect all PCM connectors.

• Repair:
  • corrosion (install new connector or terminals – clean module pins)
  • damaged or bent pins – install new terminals/pins
  • pushed-out pins – install new pins as necessary

• Connect the PCM connectors. Make sure they seat and latch correctly.

• Operate the system and determine if the concern is still present.

Yes

CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern,    Click here to access Guided Routine (PCM). Internet Explorer version 11 or greater is required to perform this Pinpoint Test. .

Normal Operation and Fault Conditions

Voltage is provided to the A/C clutch relay coil. When A/C is requested and A/C line pressures allow, a ground is provided to the A/C clutch relay coil from the PCM, energizing the A/C clutch relay. A/C

DTC Fault Trigger Conditions

Possible Sources

• Fuse
• Wiring, terminals or connectors
• A/C clutch relay
• PCM

Visual Inspection and Pre-checks

• Verify BJB fuse 22 (10A) is OK.

• Ignition OFF.

• Disconnect A/C clutch relay.

• Ignition ON.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  A/C clutch relay socket 2		Ground

  
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  A/C clutch relay socket 3		Ground

• Ignition OFF.

• Check the A/C clutch relay.
  Refer to Wiring Diagrams Cell 149 for schematic and connector information.
  

• Ignition OFF.

• Disconnect A/C clutch relay.

• Disconnect PCM 1.5L C1915B, 2.0L C1381B, 2.5L C1551B, or 2.7L C1231B .

• Ignition ON.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  A/C clutch relay socket 1		Ground

• Ignition OFF.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  A/C clutch relay socket 1		Ground

• Measure:
  Click to display connectors

    1.5L

  
  

  Positive Lead	Measurement / Action	Negative Lead
  A/C clutch relay socket 1		C1915B-2

  
  Click to display connectors

    2.0L

  
  

  Positive Lead	Measurement / Action	Negative Lead
  A/C clutch relay socket 1		C1381B-2

  
  Click to display connectors

    2.5L

  
  

  Positive Lead	Measurement / Action	Negative Lead
  A/C clutch relay socket 1		C1551B-58

  
  Click to display connectors

    2.7L

  
  

  Positive Lead	Measurement / Action	Negative Lead
  A/C clutch relay socket 1		C1231B-2

• Ignition OFF.

• Disconnect and inspect all the PCM connectors.

• Repair:
  • corrosion (install new connector or terminals – clean module pins)
  • damaged or bent pins – install new terminals/pins
  • pushed-out pins – install new pins as necessary

• Connect the PCM connectors. Make sure they seat and latch correctly.

• Operate the system and determine if the concern is still present.

Yes

CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern,    Click here to access Guided Routine (PCM). Internet Explorer version 11 or greater is required to perform this Pinpoint Test. .

Normal Operation and Fault Conditions

The purpose of this pinpoint test is to test the functions of the HVAC system and identify the correct HVAC symptom pinpoint test.

REFER to: Climate Control System - Vehicles With: Electronic Manual Temperature Control (EMTC) - System Operation and Component Description (412-00 Climate Control System - General Information, Description and Operation).

Possible Sources

• HVAC system or related components

• Ignition ON.

• Using a scan tool, perform PCM self-test.

• Ignition ON.

• Using a diagnostic scan tool, perform FCIM self-test.

• Ignition ON.

• Select panel mode.

• Observe blower motor operation and select each blower motor speed.

• Select the highest blower motor setting.

• While observing the airflow, select each of the airflow positions (panel, panel/floor, floor, floor/defrost, defrost).

• Start the vehicle and allow it to reach normal operating temperature.

• With the A/C off, select panel mode.

• Change the driver and passenger temperature settings from the coldest to the warmest and back to the coldest.

• With the engine running and the A/C off, select panel mode.

• Select the coldest temperature setting.

• Make sure the ambient air temperature is above 2°C (36°F).

• With the engine running, select panel mode.

• Press the A/C button (indicator on).

• With the engine running, press the recirculated air button (indicator off).

• Select panel mode.

• Select the highest blower motor setting.

• Observe airflow noise.

• Press the recirculated air button (indicator on).

• Using a diagnostic scan tool, view the FCIM Parameter Identifications (PIDs).

• Monitor the LDFTEMP PID.

• Using a diagnostic scan tool, view the FCIM Parameter Identifications (PIDs).

• Monitor the LDPT PID.

• Using a scan tool view the FCIM Parameter Identifications (PIDs).

• Monitor the INT_TEMP PID.

• Using the touchscreen controls, select each climate control function.

• Using the touchscreen controls, select each audio control function.

Normal Operation and Fault Conditions

Door Actuator – Air Inlet Door, REFER to: Climate Control System - Vehicles With: Electronic Manual Temperature Control (EMTC) - System Operation and Component Description (412-00 Climate Control System - General Information, Description and Operation).

During an actuator calibration cycle, the FCIM drives the air inlet mode door until the door reaches both internal stops in the HVAC case. If the air inlet mode door is temporarily obstructed or binding during a calibration cycle, the FCIM may interpret this as the actual end of travel for the door. When this condition occurs and the FCIM commands the actuator to its end of travel, the air intake may not be from the expected source.

DTC Fault Trigger Conditions

Possible Sources

• Wiring, terminals or connectors
• Actuator door binding, stuck or slipping
• Air inlet mode door actuator
• FCIM

• Ignition OFF.

• Disconnect FCIM C2402A .

• Ignition ON.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C2402A-24		Ground
  C2402A-2		Ground
  C2402A-3		Ground
  C2402A-16		Ground
  C2402A-25		Ground

• Ignition OFF.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C2402A-24		Ground
  C2402A-2		Ground
  C2402A-3		Ground
  C2402A-16		Ground
  C2402A-25		Ground

• Disconnect Air Inlet Door Actuator C289 .

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C2402A-24		C289-1
  C2402A-2		C289-2
  C2402A-3		C289-3
  C2402A-16		C289-4
  C2402A-25		C289-6

• Disconnect In-vehicle temperature and humidity sensor C233 .

• Disconnect Air distribution door actuator C236 .

• Disconnect Temperature door actuator C2091 .

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C289-1		C289-2
  C289-1		C289-3
  C289-1		C289-4
  C289-1		C289-6
  C289-2		C289-3
  C289-2		C289-4
  C289-2		C289-6
  C289-3		C289-4
  C289-3		C289-6
  C289-4		C289-6

• Ignition OFF.

• Disconnect and inspect the air inlet door actuator connector (if not previously disconnected).

• Repair:
  • corrosion (install new connector or terminals – clean module pins)
  • damaged or bent pins – install new terminals/pins
  • pushed-out pins – install new pins as necessary

• Inspect the temperature door for binding, sticking or slipping – repair as necessary.

• Reconnect all disconnected connectors. Connect the actuator electrical connector before the FCIM. Make sure they seat and latch correctly. WAIT 20 seconds for the range calibration to be executed after reconnecting of the module before any further assessment or measurement is made. If the actuator range calibration does not start, or has been interrupted, PERFORM the HVAC Calibration Routine, using a diagnostic scan tool.

• Operate the system and determine if the concern is still present.

• Ignition OFF.

• Disconnect and inspect all the FCIM connectors.

• Repair:
  • corrosion (install new connector or terminals – clean module pins)
  • damaged or bent pins – install new terminals/pins
  • pushed-out pins – install new pins as necessary

• Connect the FCIM connectors. Make sure they seat and latch correctly.

• Operate the system and determine if the concern is still present.

Yes

CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern,    Click here to access Guided Routine (FCIM). Internet Explorer version 11 or greater is required to perform this Pinpoint Test. .

Normal Operation and Fault Conditions

Air Handling, REFER to: Climate Control System - Vehicles With: Electronic Manual Temperature Control (EMTC) - System Operation and Component Description (412-00 Climate Control System - General Information, Description and Operation).

During an actuator calibration cycle, the FCIM drives the air distribution door until the doors reach both internal stops in the HVAC case. If the air distribution door is temporarily obstructed or binding during a calibration cycle, the FCIM may interpret this as the actual end of travel for the door. When this condition occurs and the FCIM commands the actuator to its end of travel, the airflow may not be from the expected outlets.

DTC Fault Trigger Conditions

Possible Sources

• Wiring, terminals or connectors
• Actuator doors binding, stuck or slipping
• Air distribution door actuator
• FCIM

• Ignition OFF.

• Disconnect FCIM C2402A .

• Ignition ON.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C2402A-20		Ground
  C2402A-2		Ground
  C2402A-3		Ground
  C2402A-22		Ground
  C2402A-21		Ground

• Ignition OFF.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C2402A-20		Ground
  C2402A-2		Ground
  C2402A-3		Ground
  C2402A-22		Ground
  C2402A-21		Ground

• Disconnect Air distribution door actuator C236 .

• Ignition OFF.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C2402A-20		C236-1
  C2402A-2		C236-2
  C2402A-3		C236-3
  C2402A-22		C236-4
  C2402A-21		C236-6

• Disconnect In-vehicle temperature and humidity sensor C233 .

• Disconnect Driver side temperature door actuator C2091 .

• Disconnect Air Inlet Door Actuator C289 .

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C236-1		C236-2
  C236-1		C236-3
  C236-1		C236-4
  C236-1		C236-6
  C236-2		C236-3
  C236-2		C236-4
  C236-2		C236-6
  C236-3		C236-4
  C236-3		C236-6
  C236-4		C236-6

• Ignition OFF.

• Disconnect and inspect the air distribution door actuator connector (if not previously disconnected).

• Repair:
  • corrosion (install new connector or terminals – clean module pins)
  • damaged or bent pins – install new terminals/pins
  • pushed-out pins – install new pins as necessary

• Inspect the air distribution door for binding, sticking or slipping – repair as necessary.

• Reconnect all disconnected connectors. Connect the actuator electrical connector before the FCIM. Make sure they seat and latch correctly. WAIT 20 seconds for the range calibration to be executed after reconnecting of the module before any further assessment or measurement is made. If the actuator range calibration does not start, or has been interrupted, PERFORM the HVAC Calibration Routine, using a diagnostic scan tool.

• Operate the system and determine if the concern is still present.

• Ignition OFF.

• Disconnect and inspect all the FCIM connectors.

• Repair:
  • corrosion (install new connector or terminals – clean module pins)
  • damaged or bent pins – install new terminals/pins
  • pushed-out pins – install new pins as necessary

• Connect the FCIM connectors. Make sure they seat and latch correctly.

• Operate the system and determine if the concern is still present.

Yes

CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern,    Click here to access Guided Routine (FCIM). Internet Explorer version 11 or greater is required to perform this Pinpoint Test. .

Normal Operation and Fault Conditions

When the engine is at operating temperature hot coolant flows from the engine through the heater core and back to the engine. Correct coolant temperatures are critical for good heater performance.

Possible Sources

• Low engine coolant level
• Plugged or partially plugged heater core
• Temperature door binding or stuck
• Temperature door actuator

Visual Inspection and Pre-checks

• Inspect for low engine coolant level.

• Ignition OFF.

• Check the engine coolant level.

• Pressure test the cooling system for leaks. Refer to the appropriate section in Group 303 for the procedure.

• Run the motor until it reaches normal operating temperature. Select the floor position on the HVAC control assembly. Set the temperature control to full warm and the blower to the lowest setting.

• Using a suitable temperature measuring device, check the heater core inlet hose.

• Using a suitable temperature measuring device, measure the heater core outlet hose temperature.

Normal Operation and Fault Conditions

Control System Logic, REFER to: Climate Control System - Vehicles With: Electronic Manual Temperature Control (EMTC) - System Operation and Component Description (412-00 Climate Control System - General Information, Description and Operation).

Possible Sources

• Wiring, terminals or connectors
• A/C system discharged or low refrigerant charge
• Network concerns
• A/C pressure transducer
• Evaporator temperature sensor
• Intake Air Temperature (IAT) / Mass Air Flow (MAF) sensor
• A/C compressor clutch air gap
• A/C compressor clutch field coil
• A/C clutch relay
• FCIM

NOTE: Static refrigerant pressure, under perfect conditions, should approximately reflect ambient air temperature. Do not rely upon the static refrigerant pressure alone to determine if the system is properly charged. Refer to the current Ford Web Based Technical Training courses for basic HVAC system refrigerant operation.

• Ignition OFF.

• With a manifold gauge set connected, check for minimum A/C system pressure.

• Ignition ON.

• Using a diagnostic scan tool, perform the network test.

• Ignition ON.

• Using a diagnostic scan tool, view PCM Parameter Identifications (PIDs).

• With a manifold gauge set connected, compare the pressure readings of the manifold gauge set and the PCM ACP_PRESS PID.

• Ignition ON.

• Using a diagnostic scan tool, perform the PCM KOEO self-test.

NOTE: Compare multiple engine sensor readings to the ambient temperature to determine sensors are reading correctly. A faulty sensor can cause the PCM to disable the A/C with or without a DTC.

• Allow the vehicle exterior and interior to stabilize to ambient temperature. This can take a soak period of at least 6 hours.

• Ignition ON.

• Using a diagnostic scan tool, view PCM Parameter Identifications (PIDs).

• Monitor the AAT, CACT, CHT, ECT, IAT, IAT2, MAF, MAPT, TCB and TCIPT Parameter Identifications (PIDs) (as applicable).

• Ignition OFF.

• Allow the vehicle exterior and interior to stabilize to the outside ambient temperature.

• Ignition ON.

• Using a diagnostic scan tool, view PCM Parameter Identifications (PIDs).

• Monitor and record the PCM PID AAT.

• Using a diagnostic scan tool, view the FCIM Parameter Identification (PIDs).

• Monitor and record the FCIM PID EVAP_TEMP.

• Start the engine and allow it to idle for at least 30 seconds to allow for the grille shutter calibration to complete.

• Using a diagnostic scan tool, view PCM PID.

• Using a diagnostic scan tool, select the PCM PID GRILL_A_CMD and command the grille shutter from 100% (open) to 0% (closed) while observing the grille shutter operation from the front of the vehicle.

• Using a diagnostic scan tool, view FCIM Parameter Identifications (PIDs).

• Monitor the CC_SW_AC PID.

• On the HVAC controls, select PANEL and then press the A/C button (indicator on).

• Start the engine.

• Using a diagnostic scan tool, monitor the PCM AC_REQ PID.

• On the HVAC controls, select PANEL and then press the A/C button (indicator on).

• On the HVAC controls, press the A/C (air conditioning) and Recirc buttons simultaneously, then release both. Within 2 seconds press A/C button again.

• Start the engine.

• On the HVAC controls, set the temperature to full cold, select PANEL and select the A/C button (indicator on).

• Using a diagnostic scan tool, activate the PCM ACC_CMD PID.

• Ignition OFF.

• Disconnect the A/C clutch relay.

• Ignition ON.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  A/C clutch relay socket 2		Ground
  A/C clutch relay socket 3		Ground

• Ignition OFF.

• Connect a fused jumper wire:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  A/C clutch relay socket 3		A/C clutch relay socket 5

• Ignition ON.

• Disconnect A/C compressor clutch field coil C100.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C100-1		Ground

• Ignition OFF.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C100-2		Ground

• Measure the A/C compressor clutch air gap at 3 equally spaced locations between the clutch hub and the A/C compressor clutch pulley.
  REFER to: Air Conditioning (A/C) Clutch Air Gap Adjustment (412-00 Climate Control System - General Information, General Procedures).
  

• Ignition OFF.

• Disconnect and inspect all the FCIM connectors.

• Repair:
  • corrosion (install new connector or terminals – clean module pins)
  • damaged or bent pins – install new terminals/pins
  • pushed-out pins – install new pins as necessary

• Connect the FCIM connectors. Make sure they seat and latch correctly.

• Operate the system and determine if the concern is still present.

Yes

CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern,    Click here to access Guided Routine (FCIM). Internet Explorer version 11 or greater is required to perform this Pinpoint Test. .

NOTE: The PCM strategy may disable the A/C compressor operation. If the A/C compressor clutch can be commanded on using a diagnostic scan tool PCM Parameter Identifications (PIDs) Active Commands, PCM replacement will not resolve the condition.

• Diagnose the PCM not energizing the A/C clutch relay using the suggestions in the table below.

  A/C Clutch Engagement is inhibited because strategy has not yet detected hardware that indicates vehicle is equipped with A/C

  A/C Clutch Engagement is inhibited because the strategy is operating in Ignition System Failure Mode

  A/C Clutch Engagement is inhibited because the (ECU) received a Request to Command the A/C Off

  A/C Clutch Engagement is inhibited because the engine has not yet reached a stable running mode after starting

  A/C Clutch Engagement is inhibited because the A/C Discharge (Head) Pressure is Too High

  A/C Clutch Engagement is inhibited because the Engine Coolant Temperature is Too High

  A/C Clutch Engagement is inhibited to Prevent Frost and Ice Build Up on the Evaporator

  A/C Clutch Engagement is inhibited to Prevent an Engine Stall during a Low Engine Speed condition

  A/C Clutch Engagement is inhibited to Protect the Compressor from a Compressor Over-speed condition

  A/C Clutch Engagement is inhibited to temporarily make more power available when Accelerator Pedal is Fully Depressed

  A/C Clutch Engagement is inhibited because Low A/C Refrigerant Charge has been detected

  A/C Clutch Engagement is inhibited to Protect the Compressor from Operating at Too Low of an Ambient Temperature

  A/C Clutch Engagement is inhibited due to Missing Climate Control Message

  A/C Clutch Engagement is inhibited because the strategy is operating in Failsafe Cooling Mode

  A/C Clutch Engagement is inhibited to Protect the Clutch from Damage because the Compressor Load and Speed are Too High

  A/C Clutch Engagement is inhibited by the off portion of the A/C Cycling Strategy invoked to manage High Engine Temperature

  A/C Clutch Engagement is inhibited due to Low Battery State of Charge

  A/C Clutch Engagement is inhibited to Protect the Variable Displacement Compressor from Operating at Too Low of a Temperature

  A/C Clutch Engagement is inhibited to improve Brake Booster Vacuum

  A/C Clutch Engagement is inhibited because Evaporator Temperature is sufficiently low and compressor was at minimum displacement

  A/C Clutch Engagement is inhibited (Disabled) because the Evaporator Temperature is sufficiently below the target temperature

  A/C Clutch Engagement is inhibited to satisfy A/C Clutch minimum off time

  A/C Clutch Engagement is inhibited Due to Request from Torque Control Strategy (to Temporarily Make More Power Available)

  A/C Clutch Engagement is inhibited to Prevent Engine Stalling

  A/C Clutch Engagement is inhibited Due to Request to Disable A/C from Stop-Start Strategy

  A/C Clutch Engagement is inhibited (Delayed) to make Power Available for Power Steering

  A/C Clutch Engagement Is Inhibited Due To State Of Auxiliary A/C Disable (Typically A Pressure Or Temperature) Switch 1 input

  A/C Clutch Engagement is inhibited due to state of auxiliary A/C Disable (Typically a Pressure or Temperature) Switch 2 input

Normal Operation and Fault Conditions

Control System Logic, REFER to: Climate Control System - Vehicles With: Electronic Manual Temperature Control (EMTC) - System Operation and Component Description (412-00 Climate Control System - General Information, Description and Operation).

DTC Fault Trigger Conditions

Possible Sources

• Wiring, terminals or connectors
• A/C pressure transducer
• Evaporator temperature sensor
• FCIM
• PCM

Visual Inspection and Pre-checks

• Inspect for loose or corroded PCM or FCIM connections.

• Ignition ON.

• Make sure the HVAC control module is powered off.

• Using a diagnostic scan tool, clear the PCM Diagnostic Trouble Codes (DTCs).

• Using a diagnostic scan tool, perform the PCM KOEO self-test.

• PERFORM the component test on the A/C clutch relay.
  Refer to Wiring Diagrams Cell 149 for schematic and connector information.
  

• Ignition OFF.

• Disconnect A/C compressor clutch field coil C100.

• Disconnect the A/C clutch relay.

• Ignition ON.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C100-1		Ground

• Ignition OFF.

• Allow the vehicle exterior and interior to stabilize to the outside ambient temperature.

• Ignition ON.

• Using a diagnostic scan tool, view PCM Parameter Identifications (PIDs).

• Monitor and record the PCM PID AAT.

• Using a diagnostic scan tool, view the FCIM Parameter Identification (PIDs).

• Monitor and record the FCIM PID EVAP_TEMP.

• Ignition ON.

• Using a diagnostic scan tool, view FCIM Parameter Identifications (PIDs).

• Monitor the CC_SW_AC PID.

• Select panel mode, press and release the A/C button (indicator off) on the FCIM controls.

• Using a diagnostic scan tool, view the PCM Parameter Identification (PIDs).

• With a manifold gauge set connected, compare the pressure readings of the manifold gauge set and the PCM Parameter Identification (PID) ACP_PRESS.

• Using a diagnostic scan tool, view PCM Parameter Identifications (PIDs).

• Monitor the AC_REQ PID.

• While in panel mode, release the A/C button (indicator off) on the FCIM controls.

• Ignition OFF.

• Disconnect FCIM C2402A .

• Ignition ON.

• Using a diagnostic scan tool, view PCM Parameter Identifications (PIDs).

• Monitor the AC_REQ PID.

• Ignition OFF.

• Disconnect and inspect all the FCIM connectors.

• Repair:
  • corrosion (install new connector or terminals – clean module pins)
  • damaged or bent pins – install new terminals/pins
  • pushed-out pins – install new pins as necessary

• Connect the FCIM connectors. Make sure they seat and latch correctly.

• Operate the system and determine if the concern is still present.

Yes

CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern,    Click here to access Guided Routine (FCIM). Internet Explorer version 11 or greater is required to perform this Pinpoint Test.

• Ignition OFF.

• Disconnect and inspect the PCM connectors.

• Repair:
  • corrosion (replace connector or terminals – clean module pins)
  • damaged or bent pins – replace terminals/pins
  • pushed-out pins – replace pins as necessary

• Connect the PCM connectors. Make sure they seat and latch correctly.

• Operate the system and verify the concern is still present.

Yes

CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern,    Click here to access Guided Routine (PCM). Internet Explorer version 11 or greater is required to perform this Pinpoint Test.

Normal Operation and Fault Conditions

Temperature Door Actuator , REFER to: Climate Control System - Vehicles With: Electronic Manual Temperature Control (EMTC) - System Operation and Component Description (412-00 Climate Control System - General Information, Description and Operation).

During an actuator calibration cycle, the FCIM drives the temperature door until the door reaches both internal stops in the HVAC case. If the temperature door is temporarily obstructed or binding during a calibration cycle, the FCIM can interpret this as the actual end of travel for the door. When this condition occurs and the FCIM commands the actuator to its end of travel, the airflow may not be the expected temperature.

DTC Fault Trigger Conditions

Possible Sources

• Wiring, terminals or connectors
• Temperature door actuator
• Temperature door is binding, stuck or slipping
• FCIM

• Ignition OFF.

• Disconnect FCIM C2402A .

• Disconnect Temperature door actuator C2091 .

• Ignition ON.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C2091-1		Ground
  C2091-2		Ground
  C2091-3		Ground
  C2091-4		Ground
  C2091-6		Ground

• Ignition OFF.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C2091-1		Ground
  C2091-2		Ground
  C2091-3		Ground
  C2091-4		Ground
  C2091-6		Ground

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C2091-1		C2402A-8
  C2091-2		C2402A-2
  C2091-3		C2402A-3
  C2091-4		C2402A-10
  C2091-6		C2402A-9

• Disconnect In-vehicle temperature and humidity sensor C233 .

• Disconnect Air Inlet Door Actuator C289 .

• Disconnect Air distribution door actuator C236 .

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C2091-1		C2091-2
  C2091-1		C2091-3
  C2091-1		C2091-4
  C2091-1		C2091-6
  C2091-2		C2091-3
  C2091-2		C2091-4
  C2091-2		C2091-6
  C2091-3		C2091-4
  C2091-3		C2091-6
  C2091-4		C2091-6

• Ignition OFF.

• Disconnect and inspect the temperature door actuator connector (if not previously disconnected).

• Repair:
  • corrosion (install new connector or terminals – clean module pins)
  • damaged or bent pins – install new terminals/pins
  • pushed-out pins – install new pins as necessary

• Inspect the temperature door for binding, sticking or slipping – repair as necessary.

• Reconnect all disconnected connectors. Connect the actuator electrical connector before the FCIM. Make sure they seat and latch correctly. WAIT 20 seconds for the range calibration to be executed after reconnecting of the module before any further assessment or measurement is made. If the actuator range calibration does not start, or has been interrupted, PERFORM the HVAC Calibration Routine, using a diagnostic scan tool.

• Operate the system and determine if the concern is still present.

• Ignition OFF.

• Disconnect and inspect all FCIM connectors.

• Repair:
  • corrosion (install new connector or terminals – clean module pins)
  • damaged or bent pins – install new terminals/pins
  • pushed-out pins – install new pins as necessary

• Connect all FCIM connectors. Make sure they seat and latch correctly.

• Operate the system and determine if the concern is still present.

Yes

CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern,    Click here to access Guided Routine (FCIM). Internet Explorer version 11 or greater is required to perform this Pinpoint Test.

Normal Operation and Fault Conditions

Voltage is supplied to the blower motor relay from the BJB. When the blower motor relay coil receives power from the FCIM, the relay coil is energized and voltage is delivered to the blower motor speed control. Power and ground for the blower motor is provided by the blower motor speed control. The FCIM sends a Pulse Width Modulated (PWM) signal to the blower motor speed control to control the blower speed.

DTC Fault Trigger Conditions

Possible Sources

• Fuse
• Wiring, terminals or connectors
• Blower motor relay
• Blower motor
• Blower motor speed control
• FCIM

Visual Inspection and Pre-checks

• Make sure BJB fuse 79 (40A) is OK.

• Ignition OFF.

• Disconnect Blower motor relay.

• Check the blower motor relay.
  Refer to Wiring Diagrams Cell 149 for schematic and connector information.
  

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  Blower motor relay socket 3		Ground

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  Blower motor relay socket 1		Ground

• Ignition OFF.

• Disconnect FCIM C2402A .

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  Blower motor relay socket 2		Ground

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  Blower motor relay socket 2		C2402A-11

• Ignition OFF.

• Disconnect Blower motor speed control C297A .

• Connect Blower motor relay.

• Connect FCIM C2402A .

• Ignition ON.

• Select PANEL on the HVAC controls.

• Select the highest blower motor setting.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C297A-6		Ground

• Ignition OFF.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C297A-5		Ground

• Ignition OFF.

• Disconnect FCIM C2402A .

• Ignition ON.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C2402A-23		Ground

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C2402A-23		C297A-3

• Disconnect Blower motor C2004 .

• Connect Blower motor speed control C297A .

• Connect FCIM C2402A .

• Ignition ON.

• Select PANEL on the HVAC controls.

• Select the highest blower motor setting.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C2004-1		C2004-2

• Ignition OFF.

• Disconnect Blower motor speed control C297B .

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C297B-2		C2004-1
  C297B-1		C2004-2

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C297B-1		C297B-2

• Ignition OFF.

• Disconnect and inspect all the blower motor speed control connectors.

• Repair:
  • corrosion (install new connector or terminals – clean module pins)
  • damaged or bent pins – install new terminals/pins
  • pushed-out pins – install new pins as necessary

• Connect the blower motor speed control connectors. Make sure they seat and latch correctly.

• Operate the system and determine if the concern is still present.

• Ignition OFF.

• Disconnect and inspect all the FCIM connectors.

• Repair:
  • corrosion (install new connector or terminals – clean module pins)
  • damaged or bent pins – install new terminals/pins
  • pushed-out pins – install new pins as necessary

• Reconnect the FCIM connectors. Make sure they seat and latch correctly.

• Operate the system and determine if the concern is still present.

Yes

CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern,    Click here to access Guided Routine (FCIM). Internet Explorer version 11 or greater is required to perform this Pinpoint Test.

Normal Operation and Fault Conditions

Voltage is supplied to the blower motor relay switch contacts from the BJB. The blower motor relay coil is supplied voltage by the FCIM. When the relay coil is energized and voltage is delivered to the blower motor speed control. Power and ground for the blower motor is provided by the blower motor speed control. The FCIM sends a Pulse Width Modulated (PWM) signal to the blower motor speed control to control the blower speed.

DTC Fault Trigger Conditions

Possible Sources

• Fuse
• Wiring, terminals or connectors
• Blower motor relay
• Blower motor
• Blower motor speed control
• FCIM

• Ignition ON.

• Select panel on the FCIM controls. Adjust the blower motor setting to the minimum and maximum settings.

• Ignition OFF.

• Disconnect Blower motor speed control C297A .

• Disconnect FCIM C2402A .

• Ignition ON.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C2402A-23		Ground

• Ignition OFF.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C2402A-23		Ground

• Ignition OFF.

• Disconnect Blower motor relay.

• Ignition ON.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  Blower motor relay socket 2		Ground

• Ignition OFF.

• Connect Blower motor speed control C297A .

• Connect FCIM C2402A .

• Ignition ON.

• Operate the system and determine if the concern is still present.

• Ignition OFF.

• Disconnect and inspect all the blower motor speed control connectors.

• Repair:
  • corrosion (install new connector or terminals – clean module pins)
  • damaged or bent pins – install new terminals/pins
  • pushed-out pins – install new pins as necessary

• Connect the blower motor speed control connectors. Make sure they seat and latch correctly.

• Operate the system and determine if the concern is still present.

• Ignition OFF.

• Disconnect and inspect all the FCIM connectors.

• Repair:
  • corrosion (install new connector or terminals – clean module pins)
  • damaged or bent pins – install new terminals/pins
  • pushed-out pins – install new pins as necessary

• Connect the FCIM connectors. Make sure they seat and latch correctly.

• Operate the system and determine if the concern is still present.

Yes

CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern,    Click here to access Guided Routine (FCIM). Internet Explorer version 11 or greater is required to perform this Pinpoint Test.

Normal Operation and Fault Conditions

The air discharge sensors supply a varying voltage to the FCIM based on the temperature of the air being discharged from the vent. The module adjusts the system based on the voltage from each sensor.

Each air discharge sensor is supplied voltage from the module and all sensors share a common sensor ground. An open, a short to ground, a short to voltage on one or more of these circuits or a failed air discharge sensor causes the FCIM to set one or more Diagnostic Trouble Codes (DTCs).

DTC Fault Trigger Conditions

Possible Sources

• Wiring, terminals or connectors
• Air discharge temperature sensor
• FCIM

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

• Ignition OFF.

• Disconnect FCIM C2402A .

• Disconnect FCIM C2402B .

• Disconnect Driver side footwell air discharge temperature sensor C2436 .

• Disconnect Driver side register air discharge temperature sensor C2438 .

• Ignition ON.

• Measure:
  Click to display connectors

    Driver side register air discharge temperature sensor

  
  

  Positive Lead	Measurement / Action	Negative Lead
  C2438-1		Ground
  C2438-3		Ground

  
  Click to display connectors

    Driver side footwell air discharge temperature sensor

  
  

  Positive Lead	Measurement / Action	Negative Lead
  C2436-1		Ground
  C2436-3		Ground

• Ignition OFF.

• Measure:
  Click to display connectors

    Driver side register air discharge temperature sensor

  
  

  Positive Lead	Measurement / Action	Negative Lead
  C2438-1		Ground
  C2438-3		Ground

  
  Click to display connectors

    Driver side footwell air discharge temperature sensor

  
  

  Positive Lead	Measurement / Action	Negative Lead
  C2436-1		Ground
  C2436-3		Ground

• Measure:
  Click to display connectors

    Driver side register air discharge temperature sensor

  
  

  Positive Lead	Measurement / Action	Negative Lead
  C2438-1		C2402B-4

  
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C2438-3		C2402A-2

  
  Click to display connectors

    Driver side footwell air discharge temperature sensor

  
  

  Positive Lead	Measurement / Action	Negative Lead
  C2436-1		C2402B-5

  
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C2436-3		C2402A-2

• Measure:
  Click to display connectors

    Driver side register air discharge temperature sensor

  
  

  Positive Lead	Measurement / Action	Negative Lead
  C2438-1		C2438-3

  
  Click to display connectors

    Driver side footwell air discharge temperature sensor

  
  

  Positive Lead	Measurement / Action	Negative Lead
  C2436-1		C2436-3

• Ignition OFF.

• Disconnect and inspect all FCIM connectors.

• Repair:
  • corrosion (install new connector or terminals – clean module pins)
  • damaged or bent pins – install new terminals/pins
  • pushed-out pins – install new pins as necessary

• Connect all FCIM connectors. Make sure they seat and latch correctly.

• Operate the system and determine if the concern is still present.

Yes

CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern,    Click here to access Guided Routine (FCIM). Internet Explorer version 11 or greater is required to perform this Pinpoint Test.

Normal Operation and Fault Conditions

In-Vehicle Temperature and Humidity Sensor, REFER to: Climate Control System - Vehicles With: Electronic Manual Temperature Control (EMTC) - System Operation and Component Description (412-00 Climate Control System - General Information, Description and Operation).

DTC Fault Trigger Conditions

Possible Sources

• Wiring, terminals or connectors
• In-vehicle temperature and humidity sensor
• FCIM

Visual Inspection and Pre-checks

• Make sure the in-vehicle temperature and humidity sensor harness is not chaffed.
• Make sure BCM fuse 21 (5A) is OK.

• Ignition OFF.

• Disconnect BCM fuse 21 (5A).

• Disconnect In-vehicle temperature and humidity sensor C233 .

• Ignition ON.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C233-1		Ground
  C233-2		Ground
  C233-3		Ground
  C233-4		Ground
  C233-5		Ground
  C233-6		Ground

• Ignition OFF.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C233-1		Ground
  C233-2		Ground
  C233-3		Ground
  C233-4		Ground
  C233-5		Ground
  C233-6		Ground

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C233-3		C2402A-3
  C233-5		C2402A-2

  
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C233-1		C2402B-27
  C233-2		C2402B-29
  C233-4		C2402B-19

  Positive Lead	Measurement / Action	Negative Lead
  C233-6		BCM fuse 21 cavity, (component side)

• Disconnect FCIM C2402A .

• Disconnect FCIM C2402B .

• Disconnect Air distribution door actuator C236 .

• Disconnect Air inlet door actuator C289 .

• Disconnect Temperature door actuator C2091 .

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C233-1		C233-2
  C233-1		C233-3
  C233-1		C233-4
  C233-1		C233-5
  C233-1		C233-6
  C233-2		C233-3
  C233-2		C233-4
  C233-2		C233-5
  C233-2		C233-6
  C233-3		C233-4
  C233-3		C233-5
  C233-3		C233-6
  C233-4		C233-5
  C233-4		C233-6
  C233-5		C233-6

• Ignition OFF.

• Inspect the disconnected connectors.

• Repair:
  • corrosion (install new connector or terminals – clean module pins)
  • damaged or bent pins – install new terminals/pins
  • pushed-out pins – install new pins as necessary

• Connect all disconnected connectors. Make sure they seat and latch correctly.

• Operate the system and determine if the concern is still present.

• Ignition OFF.

• Disconnect and inspect all the FCIM connectors.

• Repair:
  • corrosion (install new connector or terminals – clean module pins)
  • damaged or bent pins – install new terminals/pins
  • pushed-out pins – install new pins as necessary

• Connect the FCIM connectors. Make sure they seat and latch correctly.

• Operate the system and determine if the concern is still present.

Yes

CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern,    Click here to access Guided Routine (FCIM). Internet Explorer version 11 or greater is required to perform this Pinpoint Test.

Normal Operation and Fault Conditions

Evaporator Temperature Sensor, REFER to: Climate Control System - Vehicles With: Electronic Manual Temperature Control (EMTC) - System Operation and Component Description (412-00 Climate Control System - General Information, Description and Operation).

DTC Fault Trigger Conditions

Possible Sources

• Wiring, terminals or connectors
• Evaporator temperature sensor
• FCIM

• Disconnect FCIM C2402A .

• Disconnect Evaporator temperature sensor C296 .

• Ignition ON.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C2402A-19		Ground

• Ignition OFF.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C2402A-19		Ground

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C2402A-19		C296-2

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C2402A-19		C2402A-2

• Ignition OFF.

• Disconnect and inspect all the FCIM connectors.

• Repair:
  • corrosion (install new connector or terminals – clean module pins)
  • damaged or bent pins – install new terminals/pins
  • pushed-out pins – install new pins as necessary

• Connect the FCIM connectors. Make sure they seat and latch correctly.

• Operate the system and determine if the concern is still present.

Yes

CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern,    Click here to access Guided Routine (FCIM). Internet Explorer version 11 or greater is required to perform this Pinpoint Test.

Normal Operation and Fault Conditions

Voltage is supplied to the climate control actuators from the FCIM on one common power circuit. See air handling, REFER to: Climate Control System - Vehicles With: Electronic Manual Temperature Control (EMTC) - System Operation and Component Description (412-00 Climate Control System - General Information, Description and Operation).

DTC Fault Trigger Conditions

Possible Sources

• Wiring, terminals or connectors
• FCIM

• Ignition ON.

• Using a diagnostic scan tool, perform FCIM self-test.

• Ignition OFF.

• Disconnect FCIM C2402A .

• Ignition ON.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C2402A-2		Ground
  C2402A-3		Ground

• Ignition OFF.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C2402A-2		Ground
  C2402A-3		Ground

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C2402A-3		C2402A-2

• While measuring the resistance, disconnect the following components one at a time, in order. Stop disconnecting components if the measured resistance rises above 200 ohms.
  • In-vehicle temperature and humidity sensor C233
  • Air distribution door actuator C236
  • Air inlet door actuator C289
  • Temperature door actuator C2091

• Ignition OFF.

• Disconnect and inspect all the FCIM connectors.

• Repair:
  • corrosion (install new connector or terminals – clean module pins)
  • damaged or bent pins – install new terminals/pins
  • pushed-out pins – install new pins as necessary

• Connect the FCIM connectors. Make sure they seat and latch correctly.

• Operate the system and determine if the concern is still present.

Yes

CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern,    Click here to access Guided Routine (FCIM). Internet Explorer version 11 or greater is required to perform this Pinpoint Test.

Normal Operation and Fault Conditions

Cabin Heater Coolant Pump - vehicles equipped with Auto Start-Stop, REFER to: Climate Control System - Vehicles With: Electronic Manual Temperature Control (EMTC) - System Operation and Component Description (412-00 Climate Control System - General Information, Description and Operation).

DTC Fault Trigger Conditions

Possible Sources

• Wiring, terminals or connectors
• Low coolant or air in the coolant system
• Cabin heater coolant pump
• PCM

Visual Inspection and Pre-checks

• Verify BJB fuse 12 (15A) is OK.

NOTE: The engine must be auto-stopped to request the cabin heater coolant pump on. Further information can be found in the Owner's Literature for full Auto Start-Stop enabling/disabling.

• Start the vehicle and allow engine to reach normal operating temperatures.

• Using the HVAC controls, select panel mode, set temperature to full hot and set blower speed to low.

• Drive the vehicle above 3 mph (4 km/h).

• Stop the vehicle on a level surface.

• Make sure that the steering wheel is set to the straight ahead position.

• Keep the transmission selector lever in position D, brake pedal pressed and doors closed.

• Using a diagnostic scan tool, view PCM Parameter Identifications (PIDs).

• Monitor the PCM coolant pump status (COOLPMP_A_STAT) PID for at least 1 minute.

• Disconnect BJB fuse 12 (15A).

• Disconnect PCM 1.5L C1915B, or 2.0L C1381B .

• Disconnect Cabin heater coolant pump C163 .

• Ignition ON.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C163-1		Ground
  C163-2		Ground
  C163-3		Ground

• Ignition OFF.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C163-2		Ground
  C163-3		Ground

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C163-1		Ground

  
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C163-2		BJB fuse 12 cavity, (component side)

  
  Click to display connectors

    1.5L

  
  

  Positive Lead	Measurement / Action	Negative Lead
  C163-3		C1915B-3

  
  Click to display connectors

    2.0L

  
  

  Positive Lead	Measurement / Action	Negative Lead
  C163-3		C1381B-3

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C163-1		C163-2
  C163-1		C163-3
  C163-2		C163-3

NOTE: Allow the engine to cool before checking the engine coolant level.

• Visually inspect the engine coolant level at the degas bottle.

• Connect all disconnected connectors. Make sure they seat and latch correctly.

• Ignition ON.

• Using a diagnostic scan tool, CLEAR all PCM Diagnostic Trouble Codes (DTCs).

• NOTE: The engine must be auto-stopped to request the cabin heater coolant pump on. Further information can be found in the Owner's Literature for full Auto Start-Stop enabling/disabling. Start the vehicle and allow engine to reach normal operating temperatures.

• Using the HVAC controls, select panel mode, set temperature to full hot and set blower speed to low.

• Drive the vehicle above 3 mph (4 km/h).

• Stop the vehicle on a level surface.

• Make sure that the steering wheel is set to the straight ahead position.

• Keep the transmission selector lever in position D, brake pedal pressed and doors closed.

• Using a diagnostic scan tool, view PCM Parameter Identifications (PIDs).

• Monitor the PCM coolant pump status (COOLPMP_A_STAT) PID for at least 1 minute.

• Ignition OFF.

• Disconnect and inspect the PCM connectors.

• Repair:
  • corrosion (replace connector or terminals – clean module pins)
  • damaged or bent pins – replace terminals/pins
  • pushed-out pins – replace pins as necessary

• Connect the PCM connectors. Make sure they seat and latch correctly.

• Operate the system and verify the concern is still present.

Yes

CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern,    Click here to access Guided Routine (PCM). Internet Explorer version 11 or greater is required to perform this Pinpoint Test.

Normal Operation and Fault Conditions

The externally controlled variable displacement compressor is electronically controlled by the PCM. The PCM pulse width modulates the ground to the externally controlled variable displacement compressor to change the displacement of the A/C compressor. REFER to: Climate Control System - Vehicles With: Electronic Manual Temperature Control (EMTC) - System Operation and Component Description (412-00 Climate Control System - General Information, Description and Operation).

DTC Fault Trigger Conditions

Possible Sources

• Fuse
• Wiring, terminals or connectors
• Low refrigerant charge
• A/C compressor
• PCM

Visual Inspection and Pre-checks

• Inspect for loose or corroded PCM and A/C compressor connections.
• Make sure BJB fuse 12 (15A) is OK.

NOTE: The following pinpoint test step uses the EVDC100 Electronic Variable Displacement A/C Compressor Control Valve Tester, available on the Ford Rotunda website. If you do not have the EVDC100 Electronic Variable Displacement A/C Compressor Control Valve Tester, go to step 2 of this pinpoint test.

NOTE: Proper Air Conditioning (A/C) system diagnosis on a vehicle's compressor is dependent on correct refrigerant system charge and tested in ambient temperatures above 21.1°C (70°F).

• Test the EVDC compressor displacement, following the instructions in the user manual supplied with the Model EVDC100 A/C Compressor Electronic Control Valve Tester.

NOTE: Proper Air Conditioning (A/C) system diagnosis on a vehicle's compressor is dependent on correct refrigerant system charge and tested in ambient temperatures above 21.1°C (70°F).

NOTE: The performance check test is used to determine if the Externally Controlled Variable Displacement Compressor (EVDC) is able to change the displacement by monitoring PCM Parameter Identifications (PIDS) soon after the air conditioning clutch is engaged.

• Start the engine.

• Using a diagnostic scan tool, view PCM Parameter Identifications (PIDS).

• Using a diagnostic scan tool, monitor EVACC PID.

• Select the floor position on the HVAC controls. Set the temperature control to full warm and the blower to the lowest setting. Set the A/C to off. Close all windows and doors. Run for 5 minutes to heat up the climate control housing.

• Select the PANEL position on the HVAC controls. Set the temperature control to full cold and the blower to the highest setting. Set the recirc mode to on. Set the A/C to on.

• Ignition OFF.

• Connect BJB fuse 12 (15A).

• Disconnect A/C Compressor Control Solenoid C1110 .

• Ignition ON.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C1110-1		Ground

• Ignition OFF.

• Disconnect PCM 1.5L C1915B, 2.0L C1381B, 2.5L C1551B, or 2.7L C1231B .

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C1110-2		Ground

• Ignition ON.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C1110-2		Ground

• Ignition OFF.

• Measure:
  Click to display connectors

    1.5L

  
  

  Positive Lead	Measurement / Action	Negative Lead
  C1110-2		C1915B-41

  
  Click to display connectors

    2.0L

  
  

  Positive Lead	Measurement / Action	Negative Lead
  C1110-2		C1381B-41

  
  Click to display connectors

    2.5L

  
  

  Positive Lead	Measurement / Action	Negative Lead
  C1110-2		C1551B-69

  
  Click to display connectors

    2.7L

  
  

  Positive Lead	Measurement / Action	Negative Lead
  C1110-2		C1915B-41

• Ignition OFF.

• Disconnect and inspect all PCM connectors.

• Repair:
  • corrosion (install new connector or terminals – clean module pins)
  • damaged or bent pins – install new terminals/pins
  • pushed-out pins – install new pins as necessary

• Connect the PCM connectors. Make sure they seat and latch correctly.

• Operate the system and determine if the concern is still present.

Yes

CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern,    Click here to access Guided Routine (PCM). Internet Explorer version 11 or greater is required to perform this Pinpoint Test.

Normal Operation and Fault Conditions

Ambient air quality sensor, REFER to: Climate Control System - Vehicles With: Electronic Manual Temperature Control (EMTC) - System Operation and Component Description (412-00 Climate Control System - General Information, Description and Operation).

DTC Fault Trigger Conditions

Possible Sources

• Wiring, terminals or connectors
• Ambient air quality sensor
• FCIM

• Ignition OFF.

• Disconnect FCIM C2402A .

• Disconnect ambient air quality sensor C1744 .

• Disconnect BJB fuse 23 (15A).

• Ignition ON.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C1744-1		Ground
  C1744-2		Ground
  C1744-3		Ground

• Ignition OFF.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C1744-1		Ground
  C1744-3		Ground

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C1744-1		BJB fuse 23 (15A) cavity, (component side)

  
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C1744-2		Ground

  
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C1744-3		C2402A-15

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C1744-1		C1744-2
  C1744-1		C1744-3
  C1744-2		C1744-3

• Ignition OFF.

• Disconnect and inspect all the FCIM connectors.

• Repair:
  • corrosion (install new connector or terminals – clean module pins)
  • damaged or bent pins – install new terminals/pins
  • pushed-out pins – install new pins as necessary

• Reconnect the FCIM connectors. Make sure they seat and latch correctly.

• Operate the system and determine if the concern is still present.

Yes

CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern,    Click here to access Guided Routine (FCIM). Internet Explorer version 11 or greater is required to perform this Pinpoint Test. .