Diagnosis Procedure

STEP LAMP CIRCUIT


Description

Controls the front and rear step lamps and the foot lamps (ground side) to turn the lamps ON and OFF.




STEP LAMP CIRCUIT


Diagnosis Procedure

Regarding Wiring Diagram information, Interior Room Lamp Control System.
1.CHECK STEP LAMP OUTPUT
CONSULT-III





1. Turn ignition switch ON.
2. Select "STEP LAMP TEST" of BCM (INT LAMP) active test item.
3. While operating the test item, check voltage between BCM harness connector M20 terminal 62 and ground.





Is the inspection result normal?
YES - Step lamp 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 connector M20, front step lamp, rear step lamp and foot lamp connectors.
3. Check continuity between BCM connector M20 (A) terminal 62 and step lamp connectors (B) and foot lamp connectors (C).





Is the inspection result normal?
YES - Check step lamp or foot lamp for an open. If OK, replace
BCM. Service and Repair. If
NG, replace step lamp or foot lamp. Service and Repair.
NO - Repair harness or connectors.
3.CHECK STEP LAMP SHORT CIRCUIT





1. Turn ignition switch OFF.
2. Disconnect BCM connector M20, front and rear step lamp connectors and foot lamp connectors.
3. Check continuity between BCM connector M20 terminal 62 and ground.





Is the inspection result normal?
YES - Check step lamp or foot lamp for a short circuit. If OK,
replace BCM. Service and Repair. If NG, replace step lamp or foot lamp. Service and Repair.
NO - Repair the harness or connectors.