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, .


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.Turn the off-road lamps ON.
7.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. .
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.