Diagnosis Procedure
WARNING: This page is about a different car, the 2016 Infiniti QX50. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK STEERING SWITCH SIGNAL B CIRCUIT
- Disconnect AV control unit connector and spiral cable connector.
- Check continuity between AV control unit harness connector and spiral cable harness connector.
AV control unit Spiral cable Continuity Connector Terminal Connector Terminal M214 16 M36 31 Existed - Check continuity between AV control unit harness connector and ground.
AV control unit Ground Continuity Connector Terminal M214 16 Not existed
Is the inspection result normal?
YES
GO TO STEP 2.
NO
Repair harness or connector.
- CHECK SPIRAL CABLE
Check spiral cable.
Is the inspection result normal?
YES
GO TO STEP 3.
NO
Replace spiral cable.
- CHECK AV CONTROL UNIT VOLTAGE
- Connect AV control unit connector and spiral cable connector.
- Turn ignition switch ON.
- Check voltage between AV control unit harness connector.
(+) (-) Voltage
(Approx.)AV control unit AV control unit Connector Terminal Connector Terminal M214 16 M214 15 3.3 V
Is the inspection result normal?
YES
GO TO STEP 4.
NO
Replace AV control unit. Refer to REMOVAL AND INSTALLATION .
- CHECK STEERING SWITCH
- Turn ignition switch OFF.
- Check steering switch. Refer to COMPONENT INSPECTION .
Is the inspection result normal?
YES
INSPECTION END
NO
Replace steering switch. Refer to REMOVAL AND INSTALLATION .