Off-Road Lamp Cover Sensor Circuit

OFF-ROAD LAMP COVER SENSOR CIRCUIT

Description

The off-road lamp cover sensors sense the presence of the off-road lamp covers. If the off-road lamp covers are installed on the vehicle, the BCM will not activate the off-road lamps. The BCM controls the off-road lamps relay based on inputs from the combination switch (lighting and turn signal switch), the off-road lamps switch and the off-road lamp cover sensors. When the off-road lamps relay is energized, power flows from the off-road lamps relay to the off-road lamps assembly.


Component Function Check


1. CHECK OFF-ROAD LAMPS SWITCH OPERATION

Check that the indicator lamp on the off-road lamps switch illuminates from the off-road lamps switch, combination switch (lighting and turn signal switch) and off-road lamp cover sensor.
Is the inspection result normal?
YES- Off-road lamps switch function is OK.
NO- Inoperative from off-road lamp cover sensor only, .


Diagnosis Procedure

Regarding Wiring Diagram information, Off-Road Lamps.

1. CHECK OFF-ROAD LAMPS FUSE

1.Turn the ignition switch OFF.
2.Check that the following fuse is not open.





Is the fuse open?
YES- Replace the fuse after repairing the affected circuit.
NO- GO TO 2

2. CHECK OFF-ROAD LAMP COVER SENSOR POWER SUPPLY






1.Disconnect the off-road lamp assembly connectors.
2.Turn the ignition switch ON.
3.Check the voltage between the off-road lamp assembly connectors and ground.





Is battery voltage present?
YES- GO TO 3
NO- GO TO 6

3. CHECK OFF-ROAD LAMP COVER SENSOR GROUND CIRCUIT

1.Turn the ignition switch OFF.





2.Check continuity between the off-road lamp assembly harness connectors and ground.





Does continuity exist?
YES- GO TO 4.
NO- Repair the harness.

4. CHECK OFF-ROAD LAMP COVER SENSOR OUTPUT SIGNAL

1.Disconnect BCM connector M19 and connect the off-road lamp assembly.
2.Remove off-road lamp cover.
3.Turn the ignition switch ON.
4.Check voltage between off-road lamp cover sensor harness connector and ground.





Is inspection result normal?
YES- Replace BCM. Service and Repair.
NO- GO TO 5

5. CHECK OFF-ROAD LAMP COVER SENSOR SIGNAL CIRCUIT

1.Turn the ignition switch OFF.
2.Disconnect off-road lamp assembly.





3.Check continuity between the off-road lamp assembly harness connectors (A) and BCM harness connector (B).





4.Check continuity between the off-road lamp assembly harness connector and ground.





Is inspection result normal?
YES- Replace the off-road lamp cover sensor.
NO- Repair the harness.

6. CHECK OFF-ROAD LAMP COVER SENSOR CIRCUIT FOR OPEN

1.Turn the ignition switch OFF.
2.Disconnect fuse block (J/B) connector M4.
3.Check continuity between the off-road lamp assembly harness connector and fuse block (J/B) harness connector.





Does continuity exist?
YES- Replace fuse block (J/B).
NO- Repair the harness.