Rear Sunshade Shift-linked Function does not Operate when Shift Lever is Moved to R Position: Procedure

1. Make sure that the rear sunshade lowers.
2. Select the Active Test, use the Techstream to generate a control command, and then check that the rear sunshade can be lowered.

   Luggage Room Junction Block ECU

   Tester Display	Test Part	Control Range	Diagnostic Note
   Reverse signal control	Reverse signal output control	Hi (ON) or Lo (OFF)	-

   OK

   Rear sunshade can be lowered.

NG → See step   2 

OK → GO TO ELECTRONIC CONTROLLED AUTOMATIC TRANSMISSION (ECT) 

Fig 1: Identifying V25 Relay Connector And LC Junction Block Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the V25 relay connector.
2. Disconnect the LC junction block connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance

   Tester Connection	Condition	Specified Condition
   V25-2 (REV) - LC-27 (REV)	Always	Below 1 Ω
   V25-2 (REV) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: Go to next step 

Fig 2: Identifying LC Junction Block Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the LC junction block connector.
2. 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