Pinpoint Test

CHECK THE STOPLAMP OPERATION
1. Ignition OFF.
2. Apply the brake pedal while observing the stoplamps.
Do the stoplamps illuminate?
- Yes: GO to 2 .
- No: REFER to Symptom Chart: Stoplamps .
CHECK THE BCM OUTPUT
1. Ignition ON.
2. Using a scan tool, view BCM PIDs .
3. Using a scan tool, select the BCM RVRS_LMPS PID. Command the reverse lamps on then off.
Do the reversing lamps illuminate when commanded on?
- Yes: REFER to SYMPTOM CHART to diagnose a TR concern.
- No: GO to 3 .

BYPASS THE BCM

NOTE: If the jumper wire fails, REFER to the appropriate OEM WIRING DIAGRAMS to identify the cause for the circuit short. After the repair:
If DTC U1000:00 is present, clear the DTCs and repeat the on-demand self-test (required to enable the reversing lamp output driver if DTC U1000:00 is present).
If DTC U3000:49 is present, 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) .

Ignition OFF.
Disconnect: BCM C2280D.

Connect a fused jumper wire:

BCM			Battery

C2280D			Positive
Pin	Circuit	Measurement / Action	Pin	Circuit
13	CLS28 (BU/WH)		-	Battery Positive

Do the reversing lamps illuminate?

Yes: REMOVE the jumper wire. GO to 4 .
No: REMOVE the jumper wire. REPAIR the BCM reverse lamp output circuit for an open.

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.