Pinpoint Test

1. Ignition OFF.
2. Place the headlamp switch in the parking lamps on position.

Are all the parking lamps inoperative? 

• Yes: GO to  7.
• No: If all the rear parking lamps are inoperative, VERIFY the BCM fuse 40 (10A) is OK. If OK, GO to 2  . If not OK, REFER to the appropriate OEM WIRING DIAGRAMS to identify the cause for the circuit short.

  If all the front parking lamps are inoperative, VERIFY the BCM fuse 30 (15A) is OK. If OK, GO to  2. If not OK, REFER to the appropriate OEM WIRING DIAGRAMS to identify the cause for the circuit short.

  For any other inoperative lamp, GO to  4.

1. Place the headlamp switch in the off position.
2. Disconnect: BCM C2280D.
3. Connect a fused jumper wire:

   BCM			Battery
   C2280D			Positive
   Pin	Circuit	Measurement / Action	Pin	Circuit
   18	CBP40 (YE/GN)		-	Battery Positive

Do the rear parking lamps illuminate? 

• Yes: REMOVE the jumper wire. GO to  7.
• No: REMOVE the jumper wire. REPAIR the BCM rear lamp voltage supply circuit for an open.

1. Place the headlamp switch to the off position.
2. Disconnect: BCM C2280E.
3. Connect a fused jumper wire:

   BCM			Battery
   C2280E			Positive
   Pin	Circuit	Measurement / Action	Pin	Circuit
   6	CBP30 (YE/BU)		-	Battery Positive

Do the front parking lamps illuminate? 

• Yes: REMOVE the jumper wire. GO to  7.
• No: REMOVE the jumper wire. REPAIR the BCM front lamp voltage supply circuit for an open.

1. Place the headlamp switch in the off position.
2. Disconnect: Inoperative Lamp.
3. Place the headlamp switch in the parking lamps on position.
4. For a front parking lamp, measure:

   Inoperative Front Parking Lamp			Ground
   Headlamp			Ground
   Connector-Pin	Circuit	Measurement / Action	Pin	Circuit
   Left (halogen) C1021B-2	CBP30 (YE/BU)		-	Ground
   Right (halogen) C1041B-2	CBP30 (YE/BU)		-	Ground
   Left (HID) C1284B-2	CBP30 (YE/BU)		-	Ground
   Right (HID) C1285B-2	CBP30 (YE/BU)		-	Ground

5. For a rear parking lamp, measure:

   Inoperative Rear Parking Lamp			Ground
   Rear Lamp			Ground
   Connector-Pin	Circuit	Measurement / Action	Pin	Circuit
   Left C414-3	CBP40 (YE/GN)		-	Ground
   Right C417-3	CBP40 (YE/GN)		-	Ground

6. For a license plate lamp, measure:

   Inoperative License Plate Lamp			Ground
   License Plate Lamp			Ground
   Connector-Pin	Circuit	Measurement / Action	Pin	Circuit
   Left C452-1	CBP40		-	Ground
   Right C462-1	CBP40		-	Ground

Is the voltage greater than 11 volts? 

• Yes: GO to 5  .
• No: REPAIR the circuit in question.

1. For a front parking lamp, measure:

   Inoperative Front Parking Lamp			Inoperative Front Parking Lamp
   Headlamp			Headlamp
   Connector-Pin	Circuit	Measurement / Action	Connector-Pin	Circuit
   Left (halogen) C1021B-2	CBP30 (YE/BU)		Left (halogen) C1021B-1	GD120 (BK/GN)
   Right (halogen) C1041B-2	CBP30 (YE/BU)		Right (halogen) C1041B-1	GD120 (BK/GN)
   Left (HID) C1284B-2	CBP30 (YE/BU)		Left (HID) C1284B-1	GD120 (BK/GN)
   Right (HID) C1285B-2	CBP30 (YE/BU)		Right (HID) C1285B-1	GD120 (BK/GN)

2. For a rear parking lamp, measure:

   Inoperative Rear Parking Lamp			Inoperative Rear Parking Lamp
   Rear Lamp			Rear Lamp
   Connector-Pin	Circuit	Measurement / Action	Connector-Pin	Circuit
   Left C414-3	CBP40 (YE/GN)		Left C414-1	GD351 (BK/GN)
   Right C417-3	CBP40 (YE/GN)		Right C417-1	GD351 (BK/GN)

3. For a license plate lamp, measure:

   Inoperative License Plate Lamp			Inoperative License Plate Lamp
   License Plate Lamp			License Plate Lamp
   Connector-Pin	Circuit	Measurement / Action	Connector-Pin	Circuit
   Left C452-1	CBP40		Left C452-2	GD349
   Right C462-1	CBP40		Right C462-2	GD349

Is the voltage greater than 11 volts? 

• Yes: For a front parking lamp, INSTALL a new headlamp assembly. REFER to Headlamp Assembly .

  For a license plate lamp, INSTALL a new bulb socket.

  For a rear lamp, GO to 6  .

• No: REPAIR the ground circuit in question.

1. Inspect the rear lamp jumper harness for opens.

Is the rear lamp jumper harness OK? 

• Yes: INSTALL a new rear lamp assembly. REFER to Rear Lamp Assembly .
• No: REPAIR or INSTALL a new rear lamp jumper harness.

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.