Step Lamp Circuit

STEP LAMP CIRCUIT





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




Component Function Check

CAUTION:
Before performing the diagnosis, check that the following is normal.
- Battery saver output/power supply
- Front step lamp bulbs
- Rear step lamp bulbs
- Foot lamp bulbs (if equipped)
1.CHECK STEP LAMP OPERATION
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 that the front step lamps, rear step lamps and foot lamps (if equipped) turn ON/OFF.





Is the inspection result normal?
YES - Step lamp circuit is normal.
NO - SEE Diagnosis Procedure.




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 connector M20 terminal 62 and ground.





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 connector M20 and front step lamp, rear step lamp and foot lamp connectors (if equipped).
3. Check continuity between BCM connector M20 (A) terminal 62 and step lamp connectors (B) terminal 2 and foot lamp connectors (C) terminal 2.





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. Interior Room Lamp,
"Removal and Installation".
NO - Repair harness or connectors.
3.CHECK STEP LAMP SHORT CIRCUIT





1. Turn ignition switch OFF.
2. Disconnect BCM connector M20, front step lamp, rear step lamp and foot lamp connectors (if equipped).
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. Interior Room Lamp.
NO - Repair the harness or connectors.