Base Audio

STEERING SWITCH

Diagnosis Procedure

Regarding Wiring Diagram information, refer to "Wiring Diagram" Base Audio.

1. CHECK STEERING WHEEL AUDIO CONTROL SWITCH RESISTANCE

1.Turn ignition switch OFF.
2.Disconnect combination switch connector M149.
3.Check resistance between combination switch connector terminals.





Is the inspection result normal?
YES- GO TO 2.
NO- Replace steering wheel audio control switch. Refer to "Removal and Installation" Removal and Installation.

2. CHECK HARNESS BETWEEN COMBINATION SWITCH AND COMBINATION METER

1.Disconnect combination meter connector M24 and combination switch connector M30.
2.Check continuity between combination meter connector M24 and combination switch connector M30.





3.Check continuity between combination meter connector M24 and ground.





Is the inspection result normal?
Revision: March 20122013 Infiniti JX
YES- GO TO 3.
NO- Repair or replace harness or connectors.

3. CHECK COMBINATION SWITCH

Check continuity between combination switch connectors M30 and M149.





Is the inspection result normal?
YES- GO TO 4.
NO- Replace spiral cable. Refer to "Removal and Installation" Removal and Installation.

4. CHECK HARNESS BETWEEN COMBINATION METER AND AV CONTROL UNIT

1.Disconnect AV control unit connector M44.
2.Check continuity between combination meter connector M24 and AV control unit connector M44.





3.Check continuity between combination meter connector M24 and ground.





Is the inspection result normal?
YES- GO TO 5.
NO- Repair or replace harness or connectors.

5. CHECK AV CONTROL UNIT VOLTAGE

1.Connect combination meter connector M24 and AV control unit connector M44.
2.Turn ignition switch ON.
3.Check voltage between AV control unit connector M44.





Is the inspection result normal?
YES- Replace combination meter. Refer to "Removal and Installation" Service and Repair.
NO- Replace AV control unit. Refer to "Removal and Installation AV Control Unit" Base Audio.
Revision: March 20122013 Infiniti JX