Step Lamp Circuit

STEP LAMP CIRCUIT





Description
Controls the step lamp (ground side) to turn the step lamp ON and OFF.




Component Function Check

CAUTION:
Before performing the diagnosis, check that the following is normal.
- Battery saver output/power supply
- Step lamp bulbs
1.CHECK STEP LAMP OPRATION
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 step lamps 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.
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 M17 terminal 7 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 M17 and step lamp LH and RH connectors.
3. Check continuity between BCM connector M17 (A) terminal 7 and step lamp connector (B) terminal 2.





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





1. Turn ignition switch OFF.
2. Disconnect BCM connector and step lamp LH and RH connectors.
3. Check continuity between BCM connector M17 terminal 7 and ground.





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