Pinpoint Test

DETERMINE IF A TURN LAMP IS ALWAYS ON
1. Ignition ON.
2. Observe the turn lamps.
Is any turn lamp always on?
- Yes: GO to 2 .
- No: GO to 3.
CHECK THE TURN LAMP OUTPUT CIRCUITS FOR A SHORT TO VOLTAGE
1. Ignition OFF.
2. Disconnect: BCM C2280F (front or exterior mirror turn lamp).
3. Disconnect: BCM C2280C (rear turn lamp).
4. Ignition ON.
Does the turn lamp in question continue to illuminate?
- Yes: REPAIR the circuit in question.
- No: GO to 8.

CHECK FOR VOLTAGE TO THE INOPERATIVE TURN LAMP

Ignition OFF.
Disconnect: Inoperative Turn Lamp.
Activate the hazard lamp function.

For a front turn lamp, measure:

Inoperative Front Turn Lamp			Ground

Headlamp			Ground
Connector-Pin	Circuit	Measurement / Action	Pin	Circuit
Left (halogen) C1021B-3	CLS21 (BU/GN)		-	Ground
Right (halogen) C1041B-3	CLS25 (YE/VT)		-	Ground
Left (HID) C1284B-3	CLS21 (BU/GN)		-	Ground
Right (HID) C1285B-3	CLS25 (YE/VT)		-	Ground

For an exterior mirror turn lamp, measure:

Inoperative Exterior Mirror Turn Lamp			Ground

Exterior Mirror			Ground
Connector-Pin	Circuit	Measurement / Action	Pin	Circuit
Left C516-3	CLF06 (BN/GN)		-	Ground
Right C601-3	CLF07 (GY/OG)		-	Ground

For a rear turn lamp, measure:

Inoperative Rear Turn Lamp			Ground

Rear Lamp			Ground
Connector-Pin	Circuit	Measurement / Action	Pin	Circuit
Left C414-6	CLS23 (GY/BU)		-	Ground
Right C417-6	CLS24 (BN/WH)		-	Ground

Does the voltage alternate between 0 and greater than 11 volts?

Yes: GO to 4 .
No: GO to 5.

CHECK THE TURN LAMP GROUND CIRCUIT FOR AN OPEN

For a front turn lamp, measure:

Inoperative Front Turn Lamp			Inoperative Front Turn Lamp

Headlamp			Headlamp
Connector-Pin	Circuit	Measurement / Action	Connector-Pin	Circuit
Left (halogen) C1021B-3	CLS21 (BU/GN)		Left (halogen) C1021B-1	GD120 (BK/GN)
Right (halogen) C1041B-3	CLS25 (YE/VT)		Right (halogen) C1041B-1	GD120 (BK/GN)
Left (HID) C1284B-3	CLS21 (BU/GN)		Left (HID) C1284B-1	GD120 (BK/GN)
Right (HID) C1285B-3	CLS25 (YE/VT)		Right (HID) C1285B-1	GD120 (BK/GN)

For an exterior mirror turn lamp, measure:

Inoperative Exterior Mirror Turn Lamp			Inoperative Exterior Mirror Turn Lamp

Exterior Mirror			Exterior Mirror
Connector-Pin	Circuit	Measurement / Action	Connector-Pin	Circuit
Left C516-3	CLF06 (BN/GN)		Left C516-8	GD233 (BK)
Right C601-3	CLF07 (GY/OG)		Right C601-8	GD348 (BK/YE)

For a rear turn lamp, measure:

Inoperative Rear Turn Lamp			Inoperative Rear Turn Lamp

Rear Lamp			Rear Lamp
Connector-Pin	Circuit	Measurement / Action	Connector-Pin	Circuit
Left C414-6	CLS23 (GY/BU)		Left C414-1	GD351 (BK/GN)
Right C417-6	CLS24 (BN/WH)		Right C417-1	GD351 (BK/GN)

Does the voltage alternate between 0 and greater than 11 volts?

Yes: For a front turn lamp, INSTALL a new headlamp assembly. REFER to Headlamp Assembly .
For an exterior mirror turn lamp, INSTALL a new exterior mirror. REFER to EXTERIOR MIRRORS - EXPLODED VIEW .

For a rear turn lamp, REPAIR or INSTALL a new rear lamp jumper harness.
No: REPAIR the ground circuit in question.

ISOLATE THE HEADLAMP, EXTERIOR MIRROR OR REAR LAMP JUMPER HARNESS FOR A SHORT TO GROUND

Deactivate the hazard lamp function.
Ignition ON.
Using a scan tool, clear the DTCs and repeat the BCM on-demand self-test (required to enable the turn lamp output driver if DTC U1000:00 is present).
Activate the hazard lamp function.

For a front turn lamp, measure:

Inoperative Front Turn Lamp			Ground

Headlamp			Ground
Connector-Pin	Circuit	Measurement / Action	Pin	Circuit
Left (halogen) C1021B-3	CLS21 (BU/GN)		-	Ground
Right (halogen) C1041B-3	CLS25 (YE/VT)		-	Ground
Left (HID) C1284B-3	CLS21 (BU/GN)		-	Ground
Right (HID) C1285B-3	CLS25 (YE/VT)		-	Ground

For an exterior mirror turn lamp, measure:

Inoperative Exterior Mirror Turn Lamp			Ground

Exterior Mirror			Ground
Connector-Pin	Circuit	Measurement / Action	Pin	Circuit
Left C516-3	CLF06 (BN/GN)		-	Ground
Right C601-3	CLF07 (GY/OG)		-	Ground

For a rear turn lamp, measure:

Inoperative Rear Turn Lamp			Ground

Rear Lamp			Ground
Connector-Pin	Circuit	Measurement / Action	Pin	Circuit
Left C414-6	CLS23 (GY/BU)		-	Ground
Right C417-6	CLS24 (BN/WH)		-	Ground

Does the voltage alternate between 0 and greater than 11 volts?

Yes: For a front turn lamp, INSTALL a new headlamp assembly. REFER to Headlamp Assembly .
For an exterior mirror turn lamp, INSTALL a new exterior mirror. REFER to EXTERIOR MIRRORS - EXPLODED VIEW .

For a rear turn lamp, REPAIR or INSTALL a new rear lamp jumper harness.
No: GO to 6 .

CHECK THE BCM TURN LAMP OUTPUT CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.
Deactivate the hazard lamp function.
Disconnect BCM C2280F (front or exterior mirror turn lamp).
Disconnect BCM C2280C (rear turn lamp).

For a front turn lamp, measure:

Inoperative Front Turn Lamp			Ground

Headlamp			Ground
Connector-Pin	Circuit	Measurement / Action	Pin	Circuit
Left (halogen) C1021B-3	CLS21 (BU/GN)		-	Ground
Right (halogen) C1041B-3	CLS25 (YE/VT)		-	Ground
Left (HID) C1284B-3	CLS21 (BU/GN)		-	Ground
Right (HID) C1285B-3	CLS25 (YE/VT)		-	Ground

For an exterior mirror turn lamp, measure:

Inoperative Exterior Mirror Turn Lamp			Ground

Exterior Mirror			Ground
Connector-Pin	Circuit	Measurement / Action	Pin	Circuit
Left C516-3	CLF06 (BN/GN)		-	Ground
Right C601-3	CLF07 (GY/OG)		-	Ground

For a rear turn lamp, measure:

Inoperative Rear Turn Lamp			Ground

Rear Lamp			Ground
Connector-Pin	Circuit	Measurement / Action	Pin	Circuit
Left C414-6	CLS23 (GY/BU)		-	Ground
Right C417-6	CLS24 (BN/WH)		-	Ground

Is the resistance greater than 10, 000 ohms?

Yes: GO to 7 .
No: REPAIR the circuit in question. After the repair:
If DTC U1000:00 is present, CLEAR the DTCs and REPEAT the on-demand self-test (required to enable the turn 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) .

CHECK THE BCM TURN LAMP OUTPUT CIRCUIT FOR AN OPEN

For a front turn lamp, measure:

Inoperative Front Turn Lamp			BCM

Headlamp			C2280F
Connector-Pin	Circuit	Measurement / Action	Pin	Circuit
Left (halogen) C1021B-3	CLS21 (BU/GN)		8	CLS21 (BU/GN)
Right (halogen) C1041B-3	CLS25 (YE/VT)		7	CLS25 (YE/VT)
Left (HID) C1284B-3	CLS21 (BU/GN)		8	CLS21 (BU/GN)
Right (HID) C1285B-3	CLS25 (YE/VT)		7	CLS25 (YE/VT)

For an exterior mirror turn lamp, measure:

Inoperative Exterior Mirror Turn Lamp			BCM

Exterior Mirror			C2280F
Connector-Pin	Circuit	Measurement / Action	Pin	Circuit
Left C516-3	CLF06 (BN/GN)		9	CLF06 (BN/GN)
Right C601-3	CLF07 (GY/OG)		10	CLF07 (GY/OG)

For a rear turn lamp, measure:

Inoperative Rear Turn Lamp			BCM

Rear Lamp			C2280C
Connector-Pin	Circuit	Measurement / Action	Pin	Circuit
Left C414-6	CLS23 (GY/BU)		14	CLS23 (GY/BU)
Right C417-6	CLS24 (BN/WH)		15	CLS24 (BN/WH)

Is the resistance less than 3 ohms?

Yes: GO to 8 .
No: REPAIR the circuit in question.

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.