1.CHECK STEERING SWITCH SIGNAL B CIRCUIT

1. Disconnect AV control unit connector and spiral cable connector.
2. Check continuity between AV control unit harness connector and spiral cable harness connector.

   AV control unit | Spiral cable | Continuity
   Connector | Terminal | Connector | Terminal
   M201 | 16 | M36 | 31 | Existed

3. Check continuity between AV control unit harness connector and ground.

   AV control unit | Ground | Continuity
   Connector | Terminal
   M201 | 16 | Not existed

Is the inspection result normal?
YES>>GO TO 2.
NO>>Repair harness or connector.
2.CHECK SPIRAL CABLE
Check spiral cable.
Is the inspection result normal?
YES>>GO TO 3.
NO>>Replace spiral cable.
3.CHECK AV CONTROL UNIT VOLTAGE

1. Connect AV control unit connector and spiral cable connector.
2. Turn ignition switch ON.
3. Check voltage between AV control unit harness connector.

   (+) | (−) | Voltage (Approx.)
   AV control unit | AV control unit
   Connector | Terminal | Connector | Terminal
   M201 | 16 | M201 | 15 | 5.0 V

Is the inspection result normal?
YES>>GO TO 4.
NO>>Replace AV control unit.
4.CHECK STEERING SWITCH

1. Turn ignition switch OFF.
2. Check steering switch. Refer to Component Inspection.

Is the inspection result normal?
YES>>INSPECTION END
NO>>Replace steering switch.