Diagnosis Procedure
WARNING: This page is about a different car, the 2018 Nissan Titan XD and 2018 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK REAR INNER LEFT SENSOR SIGNAL CIRCUIT FOR OPEN OR SHORT TO GROUND
- Turn ignition switch OFF.
- Disconnect sonar control unit and rear sonar sensor LH inner connectors.
- Check continuity between sonar control unit connector M114 and rear sonar sensor LH inner connector C113.
Sonar control unit
Rear sonar sensor LH inner
Continuity
Connector
Terminal
Connector
Terminal
M114
21
C113
2
Yes
- Check continuity between sonar control unit connector M114 and ground.
Sonar control unit
Ground
Continuity
Connector
Terminal
M114
21
(-)
No
Is the inspection result normal?
YES
GO TO 2 .
NO
Repair or replace harness or connectors.
- CHECK REAR INNER LEFT SENSOR SIGNAL CIRCUIT FOR SHORT TO VOLTAGE
- Turn ignition switch ON.
- Check voltage between sonar control unit connector M114 and ground.
Sonar control unit
Ground
Voltage
(Approx.)
Connector
Terminal
M114
21
(-)
0V
Is the inspection result normal?
YES
GO TO 3 .
NO
Repair or replace harness or connectors.
- CHECK REAR SENSOR GROUND CIRCUIT FOR OPEN
- Turn ignition switch OFF.
- Check continuity between sonar control unit connector M114 and rear sonar sensor LH inner connector C113.
Sonar control unit
Rear sonar sensor LH inner
Continuity
Connector
Terminal
Connector
Terminal
M114
14
C113
1
Yes
Is the inspection result normal?
YES
Replace rear sonar sensor LH inner. Refer to Removal and Installation - Rear Sonar Sensors .
NO
Repair or replace harness or connectors.