Four Wheel Drive (4WD) Systems DTCS

4X4 CONTROL MODULE DIAGNOSTIC TROUBLE CODE (DTC) LIST

DTC	Description	Action
B1317	Battery Voltage High	Go to PINPOINT TEST B .
B1318	Battery Voltage Low	Go to PINPOINT TEST B .
B1342	4X4 Control Module is Faulted	CLEAR the DTCs. REPEAT the self-test. If DTC B1342 is retrieved again, INSTALL a new 4X4 control module. Refer to 4X4 CONTROL MODULE in this information.
B2900	VIN Mismatch	CHECK the PCM configuration. Refer to MODULE COMMUNICATIONS NETWORK - MODULE CONFIGURATION .
P0602	Powertrain Control Module Programming Error	RECONFIGURE 4X4 control module with the correct Active Torque Coupling (ATC) bar code number using the ATC Bar Code Entry function. Refer to Step 6 of 4X4 CONTROL MODULE in this information for the bar code number location.
P1635	Tire/Axle Out of Acceptable Range	Go to PINPOINT TEST F .
P1824	4-Wheel Drive Clutch Relay Circuit Failure	Go to PINPOINT TEST D .
P1825	4-Wheel Drive Clutch Relay Open Circuit	Go to PINPOINT TEST D .
U0100	Lost Communication with PCM	Refer to MODULE COMMUNICATIONS NETWORK to diagnose the lost communication with the PCM.
U0121	Lost Communication with Anti-lock Brake System (ABS) Control Module	Refer to MODULE COMMUNICATIONS NETWORK to diagnose the lost communication with the ABS control module.
U0155	Lost Communication with Instrument Cluster (IC) Control Module	Refer to MODULE COMMUNICATIONS NETWORK to diagnose the lost communication with the IC .
U0401	Invalid Data Received From PCM	Refer to INTRODUCTION to diagnose the accelerator position, engine coolant or Keep Alive Memory (KAM) fault.
U0415	Invalid Data Received From Anti-lock Brake System (ABS) Control Module	Go to PINPOINT TEST C .
U2050	No Application Present	CLEAR the DTCs. REPEAT the self-test. If the DTC returns, INSTALL a new 4X4 control module. Refer to 4X4 CONTROL MODULE in this information. REPEAT the self-test.
U2051	One or More Calibration Files Missing/Corrupt	CLEAR the DTCs. REPEAT the self-test. If the DTC returns, INSTALL a new 4X4 control module. Refer to 4X4 CONTROL MODULE in this information. REPEAT the self-test.