Power Supply and Ground Circuit Inspection

WARNING: This page is about a different car, the 2006 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FUSES

Check for blown rear view camera system fuses.

FUSE REFERENCE TABLE

Unit	Power source	Fuse No.
Rear view camera control unit	Battery	31
Rear view camera control unit	Ignition switch ACC or ON	4

OK or NG

OK: GO TO 2.

NG: If fuse is blown, be sure to eliminate cause of problem before installing new fuse. Refer to , "POWER SUPPLY ROUTING CIRCUIT ".

CHECK POWER SUPPLY CIRCUIT

Disconnect rear view camera control unit connector.

Check voltage between rear view camera control unit and ground.

REAR VIEW CAMERA CONTROL UNIT - VOLTAGE TABLE

Terminals			OFF	ACC
(+)		(-)
Connector	Terminal	(-)
P125	1	Ground	Battery voltage	Battery voltage
P125	2	Ground	0V	Battery voltage

Fig 1: Checking Voltage Between Rear View Camera Control Unit And Ground

Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: GO TO 3.

NG: Check harness for open between rear view camera control unit and fuse.

CHECK REAR VIEW CAMERA CONTROL UNIT GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between rear view camera control unit harness connector P125 terminal 3 and ground.
  Continuity should exist.
Fig 2: Checking Continuity Between Rear View Camera Control Unit P125 Terminal 3 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: GO TO 4.

NG: Repair harness or connector.
CHECK REAR VIEW CAMERA GROUND CIRCUIT
1. Disconnect rear view camera connector.
2. Check continuity between rear view camera harness connector D518 terminal 2 and ground.
  Continuity should exist.
OK or NG

OK: Inspection End.

NG: Repair harness or connector.