Reverse Signal Circuit

REVERSE SIGNAL CIRCUIT


Description

A reverse signal is supplied from the back-up lamp relay (with VQ35DE and CVT), transmission range switch
(with QR25DE and CVT) or back-up lamp switch (with M/T) to the AV control unit. When this signal is received, the display shows a view to the rear of the vehicle.





REVERSE SIGNAL CIRCUIT


Diagnosis Procedure

Regarding Wiring Diagram information, refer to With Navigation System or With Navigation System.
1.BACK-UP LAMP INSPECTION
1. Turn ignition switch ON.
2. Shift selector lever to R position.
Does back-up lamp illuminate?
YES - GO TO 2
NO - Check back-up lamp system. Refer to Work Flow.
2.CHECK REVERSE POSITION INPUT SIGNAL
With CONSULT-III
Select "DATA MONITOR" of "MULTI AV". Operate ignition switch with "REV SIG" of "DATA MONITOR" and check operate status.
Without CONSULT-III





1. Turn ignition switch OFF.
2. Disconnect AV control unit connector.
3. Turn ignition switch ON.
4. Shift selector lever to R position.
5. Check voltage between AV control unit harness connector M102
(sedan) or M121 (coupe) terminal 52 and ground.

Battery voltage should exist.

Does battery voltage exist?
YES - Inspection End.
NO - Check harness for open or short between AV control unit and back-up lamp relay (with VQ35DE and CVT), transmission range switch (with QR25DE and CVT) or back-up lamp switch (with M/T).