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

Inspection and Verification

Before diagnosing or repairing the Direct Current/Alternating Current (DC/AC) Inverter system refer to the Owner's Literature and
REFER to: Direct Current/Alternating Current (DC/AC) Inverter - System Operation and Component Description (414-05 Voltage Converter/Inverter, Description and Operation).
for proper system operation.

DTC and Symptom Chart

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).

  Body Control Module DTC Chart

Pinpoint Tests

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).

No Power at the AC Power Point or the AC Power Point LED Indicator Flashes with the Key in the ON Position

Refer to Wiring Diagrams Cell 44 for schematic and connector information.

Normal Operation and Fault Conditions

The engine must be started for the AC outlet to begin operation. No power will be provided to the AC outlet when the LED is flashing.
REFER to: Direct Current/Alternating Current (DC/AC) Inverter - System Operation and Component Description (414-05 Voltage Converter/Inverter, Description and Operation).

NOTE: The electrical device that is powered by the AC power point must not exceed 150 watts.

NOTE: If the green LED is flashing, the AC power point may be overloaded, overheated or shorted. Unplug the electrical device from the AC power point and cycle the ignition. Refer to the Owner's Literature to determine if the electrical device is appropriate for the AC power point.

  Diagnostic Trouble Code (DTC) Fault Trigger Conditions

Possible Sources

• Fuse(s)
• Direct current/alternating current (DC/AC) inverter
• AC Outlet
• Wiring, terminals or connectors

Visual Inspection and Diagnostic Pre-checks

• Verify that any device being used in the AC outlet is rated at less than 150 watts
• Verify the AC outlet is not being used with the engine off for a period longer than 13 minutes without starting the engine or cycling the ignition
• Verify the cabin temperature is less than 75ºC (167ºF)
• Verify the BCM Fuse 23 (10A) is OK.
• Verify the BJB fuse 81 (40A) is OK.
• Inspect the AC outlet for damage.

The AC Outlet LED Indicator is Never On

Refer to Wiring Diagrams Cell 44 for schematic and connector information.

Normal Operation and Fault Conditions

The engine must be started for the AC outlet to begin operation. No power will be provided to the AC outlet when the LED is flashing.
REFER to: Direct Current/Alternating Current (DC/AC) Inverter - System Operation and Component Description (414-05 Voltage Converter/Inverter, Description and Operation).

Possible Sources

• Fuse(s)
• direct current/alternating current (DC/AC) inverter
• AC Outlet
• Wiring, terminals or connectors

Visual Inspection and Diagnostic Pre-checks

• Verify the BCM Fuse 23 (10A) is OK.
• Verify the BJB fuse 81 (40A) is OK.
• Inspect the AC outlet for damage.

The AC Power Point Turns Off After 13 Minutes

Refer to Wiring Diagrams Cell 44 for schematic and connector information.

Normal Operation and Fault Conditions

The direct current/alternating current (DC/AC) inverter receives a signal from the BCM over the LIN whenever the engine is running. If the direct current/alternating current (DC/AC) inverter does not receive this message for 13 minutes, the inverter stops supplying 110 volts to the AC power outlet and the LED indicator flashes. The system can be reset by cycling the ignition from ON to OFF and back to ON, however the system only operates for another 13 minutes unless the signal is received from the BCM that the engine is running.

  Diagnostic Trouble Code (DTC) Fault Trigger Conditions

Possible Sources

• Fuse(s)
• direct current/alternating current (DC/AC) inverter
• BCM
• Wiring, terminals or connectors

Visual Inspection and Diagnostic Pre-checks

• Verify the concern by monitoring the AC outlet LED indicator for 13 minutes with the engine running. If the LED indicator starts to flash after 13 minutes, continue to the pinpoint test. If the system continues to operate normally after 13 minutes, make sure the customer is aware of the direct current/alternating current (DC/AC) inverter time-out function.

NOTICE: 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.

C1 RETRIEVE BCM (BODY CONTROL MODULE) DTCS

Ignition ON. Using a scan tool, perform BCM self-test. Is DTC U0100:00, B1330:02, or B1330:08 present? Yes If DTC U0100:00 is present REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Diagnosis and Testing). For DTCs B1330:02 or B1330:08 GO to C2 No GO to C2

C2 CHECK THE LIN (LOCAL INTERCONNECT NETWORK) COMMUNICATION CIRCUIT FOR A SHORT TO VOLTAGE

Ignition OFF. Disconnect BCM C2280D . Disconnect DC/ AC Inverter C3501 . Ignition ON. Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead   C3501-9   Ground Is any voltage present? Yes REPAIR the circuit. No GO to C3

C3 CHECK THE LIN (LOCAL INTERCONNECT NETWORK) COMMUNICATION CIRCUIT FOR A SHORT TO GROUND

Ignition OFF. Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead   C3501-9   Ground Is the resistance greater than 10,000 ohms? Yes GO to C4 No REPAIR the circuit.

C4 CHECK THE LIN (LOCAL INTERCONNECT NETWORK) COMMUNICATION CIRCUIT FOR AN OPEN

Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead   C3501-9   C2280D-37 Is the resistance less than 3 ohms? Yes INSTALL a new direct current/alternating current (DC/AC) inverter. REFER to: Direct Current/Alternating Current (DC/AC) Inverter (414-05 Voltage Converter/Inverter, Removal and Installation). TEST the system for normal operation. If the AC outlet still turns off after 13 minutes when the engine is running,    Click here to access Guided Routine (BCM). Internet Explorer version 11 or greater is required to perform this Pinpoint Test. No REPAIR the circuit.