Heated Steering Wheel Switch Indicator Lamp

HEATED STEERING WHEEL SWITCH INDICATOR LAMP

Component Function Check


1. CHECK HEATED STEERING WHEEL INDICATOR LAMP

1.Turn ignition switch ON.
2.Turn heated steering wheel switch ON.
Does heated steering wheel indicator lamp turn on the lamp?
YES- GO TO 2.
NO- Go to "Diagnosis Procedure" .

2. CHECK HEATED STEERING WHEEL INDICATOR LAMP

Turn heated steering wheel switch OFF.
Does heated steering wheel indicator lamp turn off the lamp?
YES- INSPECTION END
NO- Go to "Diagnosis Procedure" .


Diagnosis Procedure


1. CHECK POWER SOURCE AND GROUND CIRCUIT

1.Turn ignition switch ON.

CAUTION:
Never start the engine.
2.Turn heated steering wheel switch ON.
3.Check voltage between heated steering wheel switch harness connector terminals.





Is the inspection result normal?
YES- GO TO 7.
NO- GO TO 2.

2. CHECK GROUND CIRCUIT

Check continuity between heated steering wheel switch harness connector terminal and ground.





Is the inspection result normal?
YES- GO TO 3.
NO- Repair or replace damaged parts.

3. CHECK HARNESS BETWEEN HEATED STEERING WHEEL RELAY AND HEATED STEERING WHEEL

SWITCH
1.Turn ignition switch OFF.
2.Disconnect heated steering wheel relay connector. Refer to "Component Parts Location (Heated Steering Wheel)" Locations.
3.Disconnect heated steering wheel switch connector. Refer to "Removal and Installation" Removal and Installation.
4.Check continuity between heated steering wheel relay harness connector terminal and heated steering wheel switch harness connector terminal.





5.Check continuity between heated steering wheel relay harness connector terminal and ground.





Is the inspection result normal?
YES- GO TO 4.
NO- Repair or replace damaged parts.

4. CHECK HEATED STEERING WHEEL RELAY

Check heated steering wheel relay. Refer to "Component Inspection (Heated Steering Wheel Relay)" .
Is the inspection result normal?
YES- GO TO 5.
NO- Replace heated steering wheel relay. Refer to "Component Parts Location (Heated Steering Wheel)" Locations.

5. CHECK HARNESS BETWEEN HEATED STEERING WHEEL RELAY AND HEATED STEERING WHEEL

SWITCH
1.Check continuity between heated steering wheel relay harness connector terminal and heated steering wheel switch harness connector terminal.





2.Check continuity between heated steering wheel relay harness connector terminal and ground.





Is the inspection result normal?
YES- GO TO 6.
NO- Repair or replace damaged parts.

6. CHECK HARNESS BETWEEN FUSE BLOCK (J/B) AND HEATED STEERING WHEEL SWITCH

1.Check continuity between fuse block (J/B) connector terminal and heated steering wheel switch harness connector terminal.





2.Check continuity between fuse block (J/B) harness connector terminal and ground.





Is the inspection result normal?
YES- GO TO 7.
NO- Repair or replace damaged parts.

7. DETECT MALFUNCTIONING ITEM

Check the following.
- Ignition switch
- Harness for short or open between ignition switch and fuse block (J/B). Refer to "Wiring Diagram IGNITION POWER SUPPLY -" Ignition Power Supply.
- 10A fuse [No.3, located in the fuse block (J/B)]. Refer to "Fuse, Connector and Terminal Arrangement" Fuse, Connector and Terminal Arrangement.
- Fuse block (J/B)
Is the inspection result normal?
YES- Replace heated steering wheel switch. Refer to "Removal and Installation" Removal and Installation.
NO- Repair or replace damaged parts.


Component Inspection (Heated Steering Wheel Relay)


1. CHECK HEATED STEERING WHEEL RELAY CONTINUITY

Check continuity between heated steering wheel relay terminals.

CAUTION:
Connect the fuse between the terminals when applying the voltage.





Is the inspection result normal?
YES- INSPECTION END
NO- Replace heated steering wheel relay. Refer to "Component Parts Location (Heated Steering Wheel)" Locations.