Pinpoint Test
- CHECK THE EXTERIOR LIGHTING OPERATION
- Close all doors.
- Wait one minute.
- Observe the exterior lights.
Are the headlamps and parking lamps off?
- Yes: GO to 2 .
- No: REFER to SYMPTOM CHART: HEADLAMPS or REFER to SYMPTOM CHART: PARKING, REAR, AND LICENSE PLATE LAMPS .
- CHECK THE INTERIOR LIGHTING OPERATION
- Open and close the driver door.
- Observe the interior lamps.
Do the interior lamps operate correctly from the driver door?
- Yes: GO to 3 .
- No: REFER to SYMPTOM CHART: INTERIOR LIGHTING .
- RETRIEVE THE RECORDED DTCs
FROM THE BCM SELF-TEST
- Using a scan tool, perform the BCM self-test.
Are any DTCs present?
- Yes: For DTC B10F1:14, GO to 4
.
For all other DTCs , REFER to DTC CHART: BODY CONTROL MODULE (BCM) .
- No: GO to 7 .
- CHECK THE BCM INPUT PIDs
FROM THE IGNITION SWITCH
- Using a scan tool, view the BCM PIDs .
- Select and monitor the BCM ignition switch PIDs (IGN_ACC/RUN), (IGN_RUN/STRT) and (IGN_SW_STATE) while cycling the ignition switch through ACC, OFF, RUN and START states.
Do the BCM PIDs match the ignition switch position?
- Yes: GO to 5 .
- No: REFER to SYMPTOM CHART: STEERING COLUMN SWITCHES to diagnose the ignition switch outputs to the BCM.
- CHECK THE KEY-IN-IGNITION INPUT CIRCUIT FOR VOLTAGE
- Ignition OFF.
- Remove the key from the ignition cylinder.
- Disconnect: BCM C2280B.
- Measure:
BCM Ground C2280B Ground Pin Circuit Measurement / Action Pin Circuit 34 CDC30 (BU/GY) - Ground
Is any voltage present?
- Yes: GO to 6 .
- No: GO to 7 .
- CHECK KEY-IN-IGNITION INPUT CIRCUIT FOR A SHORT TO VOLTAGE
- Disconnect: Ignition Switch.
- Measure:
BCM Ground C2280B Ground Pin Circuit Measurement / Action Pin Circuit 34 CDC30 (BU/GY) - Ground
Is any voltage present?
- Yes: REPAIR the circuit.
- No: INSTALL a new ignition switch. REFER to IGNITION SWITCH .
- CHECK FOR CORRECT BCM OPERATION
- Ignition OFF.
- Disconnect and inspect all BCM connectors.
- 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
- Reconnect the BCM connectors. Make sure they seat and latch correctly.
- 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) - WITH INTELLIGENT ACCESS (IA) , or
REFER to BODY CONTROL MODULE (BCM) - WITHOUT 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.