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 FRONT OUTER LEFT SENSOR SIGNAL CIRCUIT FOR OPEN OR SHORT TO GROUND
- Turn ignition switch OFF.
- Disconnect sonar control unit and front sonar sensor LH outer connectors.
- Check continuity between sonar control unit connector M114 and front sonar sensor LH outer connector E221.
Sonar control unit
Front sonar sensor LH outer
Continuity
Connector
Terminal
Connector
Terminal
M114
3
E221
2
Yes
- Check continuity between sonar control unit connector M114 and ground.
Sonar control unit
Ground
Continuity
Connector
Terminal
M114
3
(-)
No
Is the inspection result normal?
YES
GO TO 2 .
NO
Repair or replace harness or connectors.
- CHECK FRONT OUTER 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
3
(-)
0V
Is the inspection result normal?
YES
GO TO 3 .
NO
Repair or replace harness or connectors.
- CHECK FRONT SENSOR GROUND CIRCUIT FOR OPEN
- Turn ignition switch OFF.
- Check continuity between sonar control unit connector M114 and front sonar sensor LH outer connector E221.
Sonar control unit
Front sonar sensor LH outer
Continuity
Connector
Terminal
Connector
Terminal
M114
13
E221
1
Yes
Is the inspection result normal?
YES
Replace front sonar sensor LH outer. Refer to Removal and Installation - Front Sonar Sensors .
NO
Repair or replace harness or connectors.