Reverse Signal Circuit

NAVIGATION: NAVIGATION SYSTEM (for HDD): Reverse Signal Circuit

Reverse Signal Circuit

DESCRIPTION

The display and navigation assembly receives a reverse signal from the luggage room junction block ECU and information about the navigation antenna, and then adjusts vehicle position.

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 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 (P and R).
OK:





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

NG -- CHECK LUGGAGE ROOM JUNCTION BLOCK ECU
OK -- REPLACE DISPLAY AND NAVIGATION ASSEMBLY
3. CHECK LUGGAGE ROOM JUNCTION BLOCK ECU




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






NG -- REPLACE LUGGAGE ROOM JUNCTION BLOCK ECU
OK -- Continue to next step.

4. CHECK HARNESS AND CONNECTOR (DISPLAY AND NAVIGATION ASSEMBLY - LUGGAGE ROOM 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 -- REPLACE DISPLAY AND NAVIGATION ASSEMBLY