DTC Diagnosis Procedure
WARNING: This page is about a different car, the 2019 Nissan NV3500 HD, 2019 Nissan NV2500 HD, and 2019 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK POWER SUPPLY CIRCUIT (MICROPHONE SIDE)
- Turn ignition switch ON.
- Check voltage between microphone harness connector R22 and ground.
Connector
Terminal
--
Ignition switch position
Value (Approx.)
R22
4
Ground
ON
5 V
Is voltage reading as specified?
YES
GO TO 3
NO
GO TO 2
- CHECK POWER SUPPLY CIRCUIT (CONTINUITY)
- Turn ignition switch OFF.
- Disconnect microphone and AV control unit harness connector M46.
- Check continuity between microphone harness connector R22 and AV control unit harness connector M46.
Connector
Terminal
Connector
Terminal
Continuity
R22
4
M46
42
Yes
- Check continuity between microphone harness connector R22 and ground.
Connector
Terminal
--
Continuity
R22
4
Ground
No
Are the continuity results as specified?
YES
Replace the AV control unit. Refer to Removal and Installation .
NO
Repair harness or connector.
- CHECK GROUND CIRCUIT
- Turn ignition switch OFF.
- Disconnect microphone harness connector R22 and AV control unit harness connector M46.
- Check continuity between microphone harness connector R22 and AV control unit harness connector M46.
Connector
Terminal
Connector
Terminal
Continuity
R22
2
M46
41
Yes
Does continuity exist?
YES
Inspection End.
NO
Repair harness or connector.