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 ACTIVE TEST
1.Turn 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- Refer to "Diagnosis Procedure" .


Diagnosis Procedure


1. CHECK STEP LAMP OUTPUT

CONSULT ACTIVE TEST
1.Turn ignition switch OFF.
2.Remove the step lamp bulbs (driver side and passenger side).
3.Turn 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 ground.





Is the measurement value normal?
YES- GO TO 2.
Fixed ON-GO TO 3.
Fixed OFF-Replace BCM. Refer to "Removal and Installation" Removal and Installation.

2. CHECK STEP LAMP OPEN CIRCUIT

1.Turn 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 step lamp.
NO- Repair harnesses or connectors.

3. CHECK STEP LAMP SHORT CIRCUIT

1.Turn ignition switch OFF.
2.Check continuity between BCM harness connector and ground.





Does continuity exist?
YES- Repair the harnesses or connectors.
NO- Replace BCM. Refer to "Removal and Installation" Removal and Installation.