Diagnosis Procedure

Check the applicable lamp bulb.

Is the bulb normal? 

YES: GO TO 2.

NO: Replace the bulb.

1. Turn the ignition switch OFF.
2. Disconnect the front turn signal lamp connector or the rear combination lamp connector.
3. Turn the ignition switch ON.
4. With operating the turn signal switch, check the voltage between the BCM harness connector and the ground.

   Terminals				Condition	Voltage (Approx.)
   (+)			(-)
   BCM			Ground	Turn signal switch
   Connector		Terminal
   RH	M67	61		LH or RH
   LH		60		OFF	0 V

   Is the measurement value normal? 

   YES: GO TO 3.

   NO: Replace BCM. Refer to "EXPLODED VIEW ".

1. Turn the ignition switch OFF.
2. Disconnect BCM connector.
3. Check continuity between the BCM harness connector and the front turn signal lamp, or the rear combination lamp harness connector.
   CONNECTOR TERMINAL CONTINUITY REFERENCE - FRONT TURN SIGNAL LAMP
   
   

   BCM			Front turn signal lamp		Continuity
   Connector		Terminal	Connector	Terminal
   RH	M67	61	E46	3	Existed
   LH		60	E27

   CONNECTOR TERMINAL CONTINUITY REFERENCE - REAR TURN SIGNAL LAMP
   
   

   BCM			Rear combination lamp		Continuity
   Connector		Terminal	Connector	Terminal
   RH	M67	61	B59	3	Existed
   LH		60	B80

   Does continuity exist? 

   YES: GO TO 4.

   NO: Repair the harnesses or connectors.

Check continuity between the BCM harness connector and the ground.

Does continuity exist? 

YES: Repair the harnesses or connectors.

NO: GO TO 5.

Check continuity between the front turn signal lamp, or the rear combination lamp and the ground.

Does continuity exist? 

YES: Replace the front combination lamp or the rear combination lamp.

NO: Repair the harnesses or connectors.