Nissan Altima (L32) 2007-2012 Service Manual: Camera image signal circuit (camera control unit to
av control
unit)
Description
Rear view camera image signals are transmitted from the rear view camera
control unit to the AV control unit
using the image signal circuits.
Diagnosis Procedure
1.CHECK CAMERA IMAGE SIGNAL CIRCUIT CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect rear view camera control unit connector B31 and AV control unit
connector M46.
3. Check continuity between rear view camera control unit harness
connector B31 (A) terminals 11, 12 and AV control unit harness
connector M46 (B) terminals 34, 55.
4. Check continuity between rear view camera control unit harness
connector B31 (A) terminals 11, 12 and ground.
Is inspection result OK?
YES >> GO TO 2
NO >> Repair harness or connector.
2.CHECK CAMERA IMAGE SIGNAL
1. Connect rear view camera control unit connector and AV control unit
connector.
2. Turn ignition switch ON.
3. Check signal between rear view camera control unit harness
connector B31 terminals 12 and 11.
Is inspection result OK?
YES >> Replace AV control unit. Refer to AV-437, "Removal and Installation".
NO >> Replace rear view camera control unit. For coupe, refer to AV-458,
"Removal and Installation -
Coupe". For sedan, refer to AV-458, "Removal and Installation - Sedan".
Description
When the selector lever is placed in the R position, the rear view camera
control unit sends a camera ON signal
to the rear view camera.
Diagnosis Procedure
1.CHECK CAMERA ON SIGNAL ...
Description
A reverse signal is supplied from the back-up lamp relay to the rear view
camera control unit. When this signal
is received, the display shows a view to the rear of the vehicle.
Diag ...
Camera on signal circuit (sedan)
Reverse signal circuit