REAR SUNSHADE SYSTEM > Rear Sunshade Shift-Linked Function does not Operate When Shift Lever is Moved to R Position

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SYSTEM DESCRIPTION

When the engine switch is on (IG) and the rear sunshade is raised, moving the shift lever to R causes the PNP switch to send a reverse-linked signal to the ECM. Then the ECM sends the signal through the multiplex communication line to the multiplex network rear ECU, which sends the signal to the rear sunshade relay. The relay then lowers the rear sunshade.

WIRING DIAGRAM


E106722E03


INSPECTION PROCEDURE

1.PERFORM ACTIVE TEST BY INTELLIGENT TESTER (REVERSE SIGNAL CONTROL)

  1. Make sure that the rear sunshade lowers.

  1. Select the Active Test, use the intelligent tester to generate a control command, and then check that the rear sunshade can be lowered.

    Multiplex network rear ECU:

    Item
    		Test Details
    		Diagnostic Note
    Reverse signal control
    		Reverse signal output control / Hi (ON) or Lo (OFF)
    		-

    OK:
    Rear sunshade can be lowered.



NG
Go to step 2
OK

Go to ELECTRONIC CONTROLLED AUTOMATIC TRANSMISSION (ECT) 

2.CHECK WIRE HARNESS (NO. 1 JUNCTION BLOCK ASSEMBLY - RELAY)
E106720E05

  1. Disconnect the W24 relay connector.

  1. Disconnect the LC junction block connector.

  1. Measure the resistance of the wire harness side connectors.

    Standard resistance:
    Tester Connection
    		Specified Condition
    W24-2 (REV) - LC-27 (REV)
    		Below 1 Ω



NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK


3.CHECK NO. 1 JUNCTION BLOCK ASSEMBLY
E106721E02

  1. Disconnect the LC junction block connector.

  1. Measure the voltage of the junction block.

    Standard voltage:
    Tester Connection
    		Condition
    		Specified Condition
    LC-27 (REV) - Body ground
    		Engine switch on (IG), shift lever on P
    		Below 1 V
    LC-27 (REV) - Body ground
    		Engine switch on (IG), shift lever on R
    		10 to 14 V



NG
REPLACE NO. 1 JUNCTION BLOCK ASSEMBLY
OK

REPLACE REAR SUNSHADE RELAY