OFF-Road Lamps Circuit

OFF-ROAD LAMPS CIRCUIT





Description
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 only, SEE Diagnosis Procedure.




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 LAMPS VOLTAGE
1. Turn the ignition switch OFF.
2. Disconnect the off-road lamps assembly connectors.
3. Remove the off-road lamps covers.
4. Turn the ignition switch ON.
5. Turn the high beam headlamps ON.
6. Check the voltage between the off-road lamp assembly connectors and ground.





Is the inspection result normal?
YES - GO TO 3
Fixed ON-GO TO 9
Fixed OFF-GO TO 4
3.CHECK OFF-ROAD LAMPS GROUND CIRCUIT





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





Is the inspection result normal?
YES - Inspect the off-road lamp bulb.
NO - Repair the harness.
4.CHECK OFF-ROAD LAMPS RELAY
1. Turn the ignition switch OFF.
2. Disconnect the off-road lamps relay connector.
3. Check off-road lamps relay. SEE Component Inspection.
Is the inspection result normal?
YES - GO TO 5
NO - Replace off-road lamps relay.
5.CHECK OFF-ROAD LAMPS RELAY POWER SUPPLY





1. Turn the ignition switch ON.
2. Check the voltage between the off-road lamps relay harness connector and ground.





Is the inspection result normal?
YES - GO TO 6
NO - GO TO 8
6.CHECK OFF-ROAD LAMPS POWER SUPPLY CIRCUIT
1. Turn the ignition switch OFF.





2. Check continuity between the off-road lamps relay harness connector (A) and off-road lamp assembly harness connectors (B).





Is inspection result normal?
YES - GO TO 7
NO - Repair harness or connector.
7.CHECK OFF-ROAD LAMPS RELAY CONTROL CIRCUIT
1. Disconnect BCM connector M19.





2. Check continuity between the off-road lamps relay harness connector (A) and BCM harness connectors (B).





Is inspection result normal?
YES - Replace BCM. Service and Repair.
NO - Inspect harness or connectors.
8.CHECK OFF-ROAD LAMPS RELAY POWER SUPPLY CIRCUIT
1. Turn the ignition switch OFF.
2. Disconnect fuse block (J/B) connector M3.
3. Check continuity between the off-road lamps relay harness connector and fuse block (J/B) harness connectors.





Does continuity exist?
YES - Replace fuse block (J/B).
NO - Repair the harness or connectors.
9.CHECK OFF-ROAD LAMPS RELAY FOR SHORT CIRCUIT
1. Turn the ignition switch OFF.
2. Disconnect the off-road lamps relay connectors.
3. Check continuity between the off-road lamps relay harness connector and ground.





Does continuity exist?
YES - Repair the harness or connectors.
NO - Replace BCM. Service and Repair.




Component Inspection
1. CHECK OFF-ROAD LAMPS RELAY





Check off-road lamps relay.





Is the inspection result normal?
YES - Inspection End.
NO - Replace off-road lamps relay.