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.
- Interior room lamp power supply
- Step lamp bulb
1.CHECK STEP LAMP OPERATION
CONSULT-III ACTIVE TEST
1. Turn the ignition switch ON.
2. Select "STEP LAMP TEST" of BCM (INT LAMP) active test item.
3. With operating the test items, check that step lamp turns ON/OFF.

On : Step lamp ON
Off : Step lamp OFF

Does the step lamp turn ON/OFF?
YES - Step lamp circuit is normal.
NO - SEE Diagnosis Procedure.




Diagnosis Procedure
1.CHECK STEP LAMP OUTPUT
CONSULT-III ACTIVE TEST
1. Turn the ignition switch OFF.
2. Remove the step lamp bulbs (driver side and passenger side).
3. Turn the ignition switch ON.
4. Select "STEP LAMP TEST" of BCM (INT LAMP) active test item.
5. With operating the test item, check continuity between BCM harness connector and the ground.





Is the measurement value normal?
YES - GO TO 2.
Fixed ON-GO TO 3.
Fixed OFF-Replace BCM.
2.CHECK STEP LAMP OPEN CIRCUIT
1. Turn the ignition switch OFF.
2. Disconnect BCM connector, and step lamp connector.
3. Check continuity between BCM harness connector and step lamp harness connector.





Does continuity exist?
YES - Replace the step lamp.
NO - Repair the harnesses or connectors.
3.CHECK STEP LAMP SHORT CIRCUIT
1. Turn the ignition switch OFF.
2. Check continuity between BCM harness connector and the ground.





Does continuity exist?
YES - Repair the harnesses or connectors.
NO - Replace BCM.