Headlamp Control Module (HCM)

HEADLAMP CONTROL MODULE (HCM) DIAGNOSTIC TROUBLE CODE (DTC) LIST

DTC	Description	Action
B1342	ECU Is Faulted	INSTALL a new LH headlamp assembly. REFER to HEADLAMP ASSEMBLY . TEST the system for normal operation.
B2609	ECU Output to Left Headlamp Stepper Motor Circuit Failure	GO to PINPOINT TEST L .
B2612	ECU Output to Right Headlamp Stepper Motor Circuit Failure	GO to PINPOINT TEST L .
B100B	Left Headlamp Swivel Control Failure	GO to PINPOINT TEST L .
B100C	Right Headlamp Swivel Control Failure	GO to PINPOINT TEST L .
U0073	Control Module Communication Bus A Off	REFER to MODULE COMMUNICATIONS NETWORK , Intermittent no High Speed Controller Area Network (HS-CAN) communication, one or more modules are not responding during network test.
U0100	Lost Communication With ECM/PCM	GO to PINPOINT TEST I .
U0121	Lost Communication With Anti-Lock Brake System (ABS) Control Module	GO to PINPOINT TEST J .
U0140	Lost Communication With Body Control Module (GEM)	GO to PINPOINT TEST K .
U0415	Invalid Data Received From Anti-Lock Brake System (ABS) Control Module	RETRIEVE and REPAIR all non-network DTCs set in the ABS module. REFER to VEHICLE DYNAMIC SYSTEMS . CLEAR the DTCs. REPEAT the self-test.
U2050	No Application Present	CARRY OUT the Programmable Module Installation (PMI). REFER to MODULE CONFIGURATION . TEST the system for normal operation.
U2471	Unexpected PRNDL State	RETRIEVE and REPAIR all non-network DTCs set in the PCM. REFER to ELECTRONIC ENGINE CONTROLS . CLEAR the DTCs. REPEAT the self-test.
U2472	Unexpected Ignition State	RETRIEVE and REPAIR all non-network DTCs set in the Body Control Module (BCM). REFER to MULTIFUNCTION ELECTRONIC MODULES . CLEAR the DTCs. REPEAT the self-test.
U2473	Unexpected Vehicle Speed (VSS)	RETRIEVE and REPAIR all non-network DTCs set in the ABS module. REFER to VEHICLE DYNAMIC SYSTEMS . CLEAR the DTCs. REPEAT the self-test.