Pinpoint Test

CHECK THE MULTIFUNCTION SWITCH INPUT
1. Ignition ON.
2. Using a scan tool, view SCCM PIDs .
3. Using a scan tool, monitor the SCCM HEADLAMP_SW PID while placing the multifunction switch in the flash-to-pass and high beam positions.
Do the PID values agree with the multifunction switch position?
- Yes: GO to 2 .
- No: INSTALL a new multifunction switch. REFER to STEERING COLUMN MULTIFUNCTION SWITCH . TEST the system for normal operation.
  If the concern still exists, INSTALL a new SCCM. REFER to STEERING COLUMN CONTROL MODULE (SCCM) .

CHECK THE BCM HIGH BEAM OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE

Ignition OFF.
Disconnect: Illuminated Headlamp.
Ignition ON.

Measure:

Always On High Beam			Ground

Headlamp			Ground
Connector-Pin	Circuit	Measurement / Action	Pin	Circuit
Left (Halogen) C1021A-3	CLF02 (GY/BN)		-	Ground
Right (Halogen) C1041A-3	CLF03 (VT/OG)		-	Ground
Left (HID) C1284A-3	CLF02 (GY/BN)		-	Ground
Right (HID) C1285A-3	CLF03 (VT/OG)		-	Ground

Is any voltage present?

Yes: GO to 3 .
No: INSTALL a new headlamp assembly. REFER to Headlamp Assembly .

CHECK THE BCM HIGH BEAM OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE

Ignition OFF.
Disconnect: BCM C2280E.
Ignition ON.

Measure:

Always On High Beam			Ground

Headlamp			Ground
Connector-Pin	Circuit	Measurement / Action	Pin	Circuit
Left (Halogen) C1021A-3	CLF02 (GY/BN)		-	Ground
Right (Halogen) C1041A-3	CLF03 (VT/OG)		-	Ground
Left (HID) C1284A-3	CLF02 (GY/BN)		-	Ground
Right (HID) C1285A-3	CLF03 (VT/OG)		-	Ground

Is any voltage present?

Yes: REPAIR the circuit in question.
No: GO to 4 .

CHECK FOR CORRECT BCM OPERATION
1. Disconnect and inspect all BCM connectors.
2. Repair:
  - corrosion (install new connector or terminals - clean module pins)
  - damaged or bent pins - install new terminals/pins
  - pushed-out pins - install new pins as necessary
3. Reconnect the BCM connectors. Make sure they seat and latch correctly.
4. Operate the system and determine if the concern is still present.
Is the concern still present?
- Yes: CHECK OASIS for any applicable TSBs . If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no TSBs address this concern, Install a new BCM. REFER to BODY CONTROL MODULE (BCM) - WITHOUT INTELLIGENT ACCESS (IA) , or REFER to BODY CONTROL MODULE (BCM) - WITH INTELLIGENT ACCESS (IA) .
- No: The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.