Reverse Signal Circuit

NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: Reverse Signal Circuit

Reverse Signal Circuit

DESCRIPTION

This circuit sends a reverse signal from the park/neutral position switch to the navigation ECU through the multi-display.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK REVERSE SIGNAL (DISPLAY CHECK MODE)





(a) Enter the "Display Check" mode and select "Vehicle Signal Check Mode" Operation Check.
(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 PARK/NEUTRAL POSITION SWITCH
OK -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY - NAVIGATION ECU)





(a) Disconnect the F30 display connector.
(b) Disconnect the F32 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.
3. CHECK MULTI-DISPLAY





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






NG -- REPLACE MULTI-DISPLAY
OK -- REPLACE NAVIGATION ECU
4. CHECK PARK/NEUTRAL POSITION SWITCH





(a) Disconnect the F28 display connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:






NG -- CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY - PARK/NEUTRAL POSITION SWITCH)
OK -- REPLACE MULTI-DISPLAY
5. CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY - PARK/NEUTRAL POSITION SWITCH)





(a) Disconnect the F28 display connector.
(b) Disconnect the C19 position switch 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 PARK/NEUTRAL POSITION SWITCH