Rear Sunshade Shift-Linked Function Does Not Operate When Shift Lever Is Moved To R Position

INTERIOR: REAR SUNSHADE SYSTEM: Rear Sunshade Shift-linked Function does not Operate when Shift Lever is Moved to R Position
- Rear Sunshade Shift-linked Function does not Operate when Shift Lever is Moved to R Position

SYSTEM DESCRIPTION

When the engine switch is on (IG) and the rear sunshade is raised, moving the shift lever to the R position causes the park/neutral position switch to send a reverse-linked signal to the main body ECU through the ECM (the ECM and main body ECU communicate via CAN). Then the main body ECU sends the signal to the rear sunshade relay. The relay then lowers the rear sunshade.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK OPERATION

(a) Check that the back-up light comes on when the shift lever is moved to the R position.

OK:

Back-up light comes on when shift lever is moved to R position.

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

2. CHECK REAR SUNSHADE RELAY

(a) Disconnect the L24 rear sunshade relay connector.





(b) Measure the voltage of the wire harness side connector.

Standard voltage:





NG -- CHECK WIRE HARNESS (MAIN BODY ECU - PARK/NEUTRAL POSITION SWITCH)

OK -- REPLACE REAR SUNSHADE RELAY

3. CHECK WIRE HARNESS (MAIN BODY ECU - PARK/NEUTRAL POSITION SWITCH)

(a) Disconnect the E58 main body ECU connector.





(b) Measure the voltage of the wire harness side connector.

Standard voltage:





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

4. CHECK WIRE HARNESS (REAR SUNSHADE RELAY - MAIN BODY ECU)

(a) Disconnect the L24 relay connector.





(b) Disconnect the E58 main body ECU connector.

(c) Measure the resistance of the wire harness side connectors.

Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE MAIN BODY ECU