Ford Fusion: Voltage Converter/Inverter / Direct Current/Direct Current (DC/DC) Converter Control Module. Diagnosis and Testing

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

  DTC Chart: Direct Current/Direct Current (DC/DC) Converter Control Module

Symptom Chart

Pinpoint Test(s)

THE START/STOP FUNCTION IS INOPERATIVE AND DISABLED

Refer to Wiring Diagrams Cell 40 for schematic and connector information.

Normal Operation and Fault Conditions

The Direct Current/Direct Current (DC/DC) converter control module monitors the PCM boost enable control circuit voltage. If the PCM enable control circuit to the Direct Current/Direct Current (DC/DC) converter control module becomes shorted to ground or is low for more than 60 seconds DTC P0A12:11 sets and the Direct Current/Direct Current (DC/DC) converter control module will not boost. If the enable circuit becomes open this DTC will not set however the Direct Current/Direct Current (DC/DC) converter control module will not recieve an Re-crank signal from the PCM and will not boost.

  Diagnostic Trouble Code (DTC) Fault Trigger Conditions

Possible Sources

• Wiring, terminals or connectors
• Direct Current/Direct Current (DC/DC) converter control module
• PCM

NOTE: Use the correct probe adapter(s) from the Flex Probe Kit when taking measurements. Failure to use the correct probe adapter(s) may damage the connector.

A1 CHECK DIRECT CURRENT/DIRECT CURRENT (DC/DC) CONVERTER CONTROL MODULE ENABLE CIRCUIT FOR A SHORT TO VOLTAGE

Ignition OFF. Disconnect Direct Current/Direct Current (DC/DC) converter control module C1692 . Disconnect PCM C1232B . Ignition ON. Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead   C1692-2   Ground Is any voltage present? Yes REPAIR the circuit. No GO to A2

A2 CHECK DIRECT CURRENT/DIRECT CURRENT (DC/DC) CONVERTER CONTROL MODULE ENABLE CIRCUIT FOR A SHORT TO GROUND

Ignition OFF. Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead   C1692-2   Ground Is the resistance greater than 10,000 ohms? Yes GO to A3 No REPAIR the circuit.

A3 CHECK DIRECT CURRENT/DIRECT CURRENT (DC/DC) CONVERTER CONTROL MODULE ENABLE CIRCUIT FOR AN OPEN

Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead   C1692-2   C1232B-21 Is the resistance less than 3 ohms? Yes GO to A4 No REPAIR the circuit.

A4 PERFORM THE PCM (POWERTRAIN CONTROL MODULE) SELF TEST

Connect PCM C1232B . Connect Direct Current/Direct Current (DC/DC) converter control module C1692 . Ignition ON. Using a diagnostic scan tool, perform PCM self-test. Are any PCM Diagnostic Trouble Codes (DTCs) present? Yes For DTC U0298:00 DIAGNOSE the network communication concern. REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing). For all other DTCs No GO to A7

A5 CHECK DIRECT CURRENT/DIRECT CURRENT (DC/DC) CONVERTER CONTROL MODULE DTCS WITH THE PCM (POWERTRAIN CONTROL MODULE) DISCONNECTED

Connect Direct Current/Direct Current (DC/DC) converter control module C1692 . Disconnect PCM C1232B-21 . Using a diagnostic scan tool, clear the Direct Current/Direct Current (DC/DC) converter control module DTCs. Using a diagnostic scan tool, perform the Direct Current/Direct Current (DC/DC) converter control module self-test. Is DTC P0A12:11 retrieved? Yes GO to A6 No GO to A7

A6 CHECK FOR CORRECT DIRECT CURRENT/DIRECT CURRENT (DC/DC) CONVERTER CONTROL MODULE OPERATION

Ignition OFF. Disconnect and inspect Direct Current/Direct Current (DC/DC) converter control module connector. 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 Direct Current/Direct Current (DC/DC) converter control module connector. Make sure it seats and latches correctly. Operate the system and determine if the concern is still present. Is the concern still present? Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, discontinue this test and follow TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new Direct Current/Direct Current (DC/DC) converter control module. REFER to: Direct Current/Direct Current (DC/DC) Converter Control Module (414-05 Voltage Converter/Inverter, Removal and Installation). No The system is operating correctly at this time. The concern may have been caused by module connections. Address the root cause of any connector or pin issues.

A7 CHECK FOR CORRECT PCM (POWERTRAIN CONTROL MODULE) OPERATION

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 Reconnect the PCM connectors. Make sure it seats and latches correctly. Operate the system and determine if the concern is still present. Is the concern still present? Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, discontinue this test and follow TSB instructions. If no Technical Service Bulletins (TSBs) address this concern,    Click here to access Guided Routine (PCM). Internet Explorer version 11 or greater is required to perform this Pinpoint Test. No The system is operating correctly at this time. The concern may have been caused by module connections. Address the root cause of any connector or pin issues.

B1310:11

Refer to Wiring Diagrams Cell 13 for schematic and connector information.

Normal Operation and Fault Conditions

The Direct Current/Direct Current (DC/DC) converter control module measures the current draw on the run/start switched output circuit. If the Direct Current/Direct Current (DC/DC) converter control module detects a short to ground or if the current draw exceeds 8 amps the DTC B1310:11 sets and the switching transistor is disabled for the current ignition cycle. A large number of shorts to ground or excessive current draw events will set DTC U1000:00 and the switching transistor is disabled until it is reset using a diagnostic scan tool. Presence of this DTC may result in the blind spot detection, video camera, and HUD module being inoperative.

  DTC Fault Trigger Conditions

Possible Sources

• Wiring, terminals or connectors
• Side Obstacle Detection Control Module - Left (SOD-L)
• Side Obstacle Detection Control Module - Right (SOD-R)
• Video camera
• HUD module
• Direct Current/Direct Current (DC/DC) converter control module

B1310:15

Refer to Wiring Diagrams Cell 13 for schematic and connector information.

Normal Operation and Fault Conditions

The Direct Current/Direct Current (DC/DC) converter control module measures the current draw on the run/start switched output circuit. If the current draw is less than expected this indicates the circuit is shorted to battery or open. If a failure is present during VQM initialization at key on it is disabled until the next ignition cycle. Presence of this DTC may result in the blind spot detection, video camera, and HUD module being inoperative.

  DTC Fault Trigger Conditions

Possible Sources

• Wiring, terminals or connectors
• Direct Current/Direct Current (DC/DC) converter control module

U1000:00

Refer to Wiring Diagrams Cell 13 for schematic and connector information.

Normal Operation and Fault Conditions

The Direct Current/Direct Current (DC/DC) converter control module measures the current draw on the run/start switched output circuit on pin 5. If the Direct Current/Direct Current (DC/DC) converter control module detects a short to ground the switching transistor is disabled for the current ignition cycle. A large number of shorts to ground or excessive current draw events will set DTC U1000:00 and the switching transistor will be disabled until it is reset using a diagnostic scan tool. Presence of this DTC may result in the blind spot detection, video camera, and HUD being inoperative.

  DTC Fault Trigger Conditions

Possible Sources

• Wiring, terminals or connectors
• Side Obstacle Detection Control Module - Left (SOD-L)
• Side Obstacle Detection Control Module - Right (SOD-R)
• Video camera
• HUD
• Direct Current/Direct Current (DC/DC) converter control module

U0100:87

Refer to Wiring Diagrams Cell 40 for schematic and connector information.

Normal Operation and Fault Conditions

The Direct Current/Direct Current (DC/DC) converter control module communicates with the PCM over a High Speed Controller Area Network (HS-CAN) to send and receive important vehicle data.

When powered on, the Direct Current/Direct Current (DC/DC) converter control module continually monitors the High Speed Controller Area Network (HS-CAN). If communication with a module is lost, a fault is detected and the Direct Current/Direct Current (DC/DC) converter control module sets the appropriate DTC.

Possible Sources

• Network traffic
• Direct Current/Direct Current (DC/DC) converter control module
• PCM

  DTC Fault Trigger Conditions

E1 CHECK THE COMMUNICATION NETWORK

Ignition ON. Using a diagnostic scan tool, perform a network test. Does the PCM pass the network test? Yes GO to E2 No DIAGNOSE the scan tool communication with the PCM concern. REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

E2 CHECK THE DIRECT CURRENT/DIRECT CURRENT (DC/DC) CONVERTER CONTROL MODULE CONTINUOUS MEMORY DIAGNOSTIC TROUBLE CODES (CMDTCS)

Using a diagnostic scan tool, perform the Direct Current/Direct Current (DC/DC) converter control module self-test. Using a diagnostic scan tool, clear the Direct Current/Direct Current (DC/DC) converter control module Diagnostic Trouble Codes (DTCs). Wait 10 seconds. Using a diagnostic scan tool, perform the Direct Current/Direct Current (DC/DC) converter control module self-test. Is DTC U0100:87 retrieved? Yes GO to E3 No The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

E3 RETRIEVE THE DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE PCM (POWERTRAIN CONTROL MODULE)

Using a diagnostic scan tool, perform the PCM self-test. Is DTC P0562:00 or P0563:00 recorded? Yes DIAGNOSE the PCM DTC. No GO to E4

E4 CHECK FOR A LOST COMMUNICATION WITH THE PCM (POWERTRAIN CONTROL MODULE) DTC (DIAGNOSTIC TROUBLE CODE) IN OTHER MODULES

Using a diagnostic scan tool, retrieve Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules. Is DTC U0100:00 or U0100:87 set in multiple modules? Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, discontinue this test and follow TSB instructions. If no Technical Service Bulletins (TSBs) address this concern,    Click here to access Guided Routine (PCM). Internet Explorer version 11 or greater is required to perform this Pinpoint Test. No CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, discontinue this test and follow TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new Direct Current/Direct Current (DC/DC) converter control module. REFER to: Direct Current/Direct Current (DC/DC) Converter Control Module (414-05 Voltage Converter/Inverter, Removal and Installation).