Headlamp Control Module (HCM)

HEADLAMP CONTROL MODULE (HCM) DTC CHART

DTC	Description	Action
B1342	ECU Is Faulted	INSTALL a new LH headlamp assembly. REFER to Headlamp Assembly in this service information. 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 ANTI-LOCK BRAKE SYSTEM (ABS) AND STABILITY CONTROL . 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 ANTI-LOCK BRAKE SYSTEM (ABS) AND STABILITY CONTROL . CLEAR the DTCs. REPEAT the self-test.