DTC Diagnosis Procedure

Controls the front step lamps (if equipped) (ground side) to turn the lamps ON and OFF.

1. CHECK STEP LAMP CONTROL CIRCUIT 
   1. Turn ignition switch OFF.
   2. Open driver's door.
   3. Check voltage between BCM harness connector M20 terminal 62 and ground.
   NOTE: Observe interior lamp timer period when performing test.

   Connector	Terminal	--	DRIVER DOOR	Voltage
   M20	62	Ground	OPEN	0 V
   			CLOSED	Battery voltage

   Is the inspection result normal?

   YES

   Step lamp control circuit is operating normally.

   Fixed ON

   GO TO 3

   Fixed OFF

   GO TO 2

2. CHECK STEP LAMP OPEN CIRCUIT 
   1. Turn ignition switch OFF.
   2. Disconnect BCM harness connector M20 and front step lamp harness connector in question.
   3. Check continuity between BCM harness connector M20 terminal 62 and step lamp harness connector in question.

   Connector	Terminal	Connector		Terminal	Continuity
   M20	62	Front step lamp LH	D3	2	Yes
   		Front step lamp RH	D103	2

   Is the inspection result normal?

   YES

   Check step lamp for an open. If NG, replace step lamp. Refer to Removal and Installation . If OK, replace BCM. Refer to Removal and Installation .

   NO

   Repair harness or connectors.

3. CHECK STEP LAMP SHORT CIRCUIT 
   1. Turn ignition switch OFF.
   2. Disconnect BCM harness connector M20.
   3. Check continuity between BCM harness connector M20 terminal 62 and ground.

   Connector	Terminal	--	Continuity
   M20	62	Ground	No

   Is the inspection result normal?

   YES

   Check step lamps for a short circuit. If NG, replace step lamp. Refer to Removal and Installation . If OK, replace BCM. Refer to Removal and Installation .

   NO

   Repair the harness or connectors.