C2112–DRIVETRAIN SENSOR SUPPLY CIRCUIT HIGH (FDCM)

For a complete wiring diagram Refer to Section 8W

When Monitored:
With the ignition on and no system undervoltage or overvoltage condition present.
Set Condition:
The Final Drive Control Module detects that the Drivetrain Sensor Supply voltage is above 7.5 volts for 300 mS

Possible Causes

DRIVETRAIN 5 VOLT SUPPLY CIRCUIT SHORT TO VOLTAGE

FINAL DRIVE CONTROL MODULE (FDCM)

1.5 VOLT SUPPLY (REFERENCE) VOLTAGE IS ABOVE 5.2 VOLTS

Is the voltage above 5.2 volts?

Yes

2.(K504) DRIVETRAIN 5 VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE

Is there any voltage present?

Yes

Repair the (K504) Drivetrain 5 Volt Supply circuit for a short to voltage.
Perform the TRANSFER CASE VERIFICATION TEST-VER 1 (Refer to 21 - TRANSMISSION/TRANSAXLE/TRANSFER CASE - STANDARD PROCEDURE).

Replace the Final Drive Control Module in accordance with the Service information.
Perform the TRANSFER CASE VERIFICATION TEST-VER 1 (Refer to 21 - TRANSMISSION/TRANSAXLE/TRANSFER CASE - STANDARD PROCEDURE).

3.INTERMITTENT WIRING AND CONNECTORS

Were any problems found?

Yes