Rear Sunshade Does Not Operate With Rear Sunshade Switch

INTERIOR: REAR SUNSHADE SYSTEM: Rear Sunshade does not Operate with Rear Sunshade Switch

Rear Sunshade does not Operate with Rear Sunshade Switch

SYSTEM DESCRIPTION

When the rear sunshade switch is pressed, a signal is sent directly to the integration control and panel assembly. Then the signal is sent through the multiplex communication line to the luggage room junction block (luggage room junction block ECU), which operates the rear sunshade relay.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK MULTIPLEX COMMUNICATION SYSTEM (LUGGAGE ROOM JUNCTION BLOCK ECU - INTEGRATION CONTROL AND PANEL ASSEMBLY)
(a) Refer to HOW TO PROCEED WITH TROUBLESHOOTING in the multiplex communication system How to Proceed With Troubleshooting.
NEXT -- Continue to next step.
2. READ VALUE USING TECHSTREAM (REAR SUNSHADE SWITCH)
(a) Check the Data List for proper functioning of the rear sunshade switch.

Integration Control and Panel Assembly





OK:
"ON" (rear sunshade switch is pressed) appears on the screen.
NG -- REPLACE INTEGRATION CONTROL AND PANEL ASSEMBLY
OK -- Continue to next step.
3. INSPECT FUSE (RR J/B, RR S/SHADE)
(a) Remove the RR J/B fuse from the engine room No. 1 relay block.
(b) Remove the RR S/SHADE fuse from the luggage room junction block.
(c) Measure the resistance of the fuses.
Standard resistance:
Below 1 Ohms
NG -- REPLACE FUSE
OK -- Continue to next step.
4.
CHECK WIRE HARNESS (LUGGAGE ROOM JUNCTION BLOCK - REAR SUNSHADE RELAY, BATTERY AND BODY GROUND)




(a) Disconnect the V25 relay connector.
(b) Disconnect the LB, LC and LF junction block connectors.
(c) Measure the resistance of the wire harness side connectors.
Standard resistance:





(d) Measure the voltage of the wire harness side connector.
Standard voltage:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
5. INSPECT REAR SUNSHADE ASSEMBLY (MOTOR OPERATION)
(a) Check the rear sunshade On-Vehicle Inspection.
OK:
Rear sunshade raises and lowers.
NG -- REPLACE REAR SUNSHADE ASSEMBLY
OK -- Continue to next step.
6. INSPECT REAR SUNSHADE RELAY
(a) After replacing the rear sunshade relay with a normal one, check that the rear sunshade can operate normally.
OK:
Rear sunshade can operate normally.
NG -- REPLACE LUGGAGE ROOM JUNCTION BLOCK ASSEMBLY
OK -- NORMAL (REAR SUNSHADE RELAY DEFECTIVE)