Reverse Signal Circuit

PARK ASSIST / MONITORING: REAR VIEW MONITOR SYSTEM: Reverse Signal Circuit

Reverse Signal Circuit

DESCRIPTION

The multi-display receives a reverse signal from the rear junction block ECU, and then switches from the navigation system to the rear view monitor system.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK BACK-UP LIGHT
(a) Move the shift lever to the R position.
(b) Check the back-up light.
OK:
The back-up light is ON.
NG -- GO TO LIGHTING SYSTEM
OK -- Continue to next step.

2. CHECK VEHICLE SIGNAL (DISPLAY CHECK MODE)




(a) Enter the "Display Check" mode (Vehicle Signal Check Mode) Display Check Mode.
(b) Check that the display changes between ON and OFF according to the shift lever operation.
OK:





HINT: This display is updated once per second. As a result, it is normal for the display to lag behind the actual change in the switch.

NG -- CHECK REAR JUNCTION BLOCK ECU
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
3. CHECK REAR JUNCTION BLOCK ECU
(a) Disconnect the L59 display connector.




(b) Measure the voltage according to the value(s) in the table below.
Standard voltage:






NG -- GO TO LIGHTING SYSTEM
OK -- Continue to next step.

4. CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY - REAR JUNCTION BLOCK ECU)




(a) Disconnect the L59 display connector.
(b) Disconnect the S63 ECU connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

5. REPLACE LUGGAGE ROOM JUNCTION BLOCK (REAR JUNCTION BLOCK ECU)
(a) Temporarily replace the ECU with a new or normally functioning one.
(b) Check that the multi-display displays the rear view of the vehicle when the shift lever position is changed to R.
NG -- REPLACE MULTI-DISPLAY
OK -- END (LUGGAGE ROOM JUNCTION BLOCK IS DEFECTIVE)