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

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine / Data List.
5. Read the Data List according to the display on the Techstream.
   ENGINE
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Shift SW Status (R Range)	PNP switch status / ON or OFF	ON: Shift lever in R OFF: Shift lever not in R	When the shift lever position displayed on the Techstream differs from the actual position, adjustment of the PNP switch or the shift cable may be incorrect.

   OK

   The Techstream display changes according to the shift position selected using the shift lever.

NG → See step   8 

OK: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Main Body / Active Test.
5. Perform the Active Test according to the display on the Techstream.

   HINT: 

   Make sure the rear window shade assembly is raised before performing Active Test.

   MAIN BODY
   
   

   Tester Display	Test Part	Control Range	Diagnostic Note
   Reverse Gear Signal	Reverse signal	OFF/ON	-

   OK

   The rear window shade assembly is lowered.

NG → See step   3 

OK → See step   7 

1. Disconnect the J19 rear sunshade relay connector.
2. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   J19-2 (REV) - Body ground	Engine switch on (IG), shift lever in any position other than R	11 to 14 V

NG → See step   4 

OK → See step   6 

1. Remove the main body ECU (multiplex network body ECU). Refer to REMOVAL .
   Fig 1: Measuring Resistance Of Instrument Panel Junction Block Assembly Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TEXT IN ILLUSTRATION
   
   

   *a

   Component without harness connected (Instrument Panel Junction Block Assembly)

   -

   -

2. Disconnect the 3B instrument panel junction block assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   3B-38 - MB-23 (REV)	Always	Below 1 Ω

NG → See step   9 

OK: Go to next step 

1. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   3B-38 - J19-2 (REV)	Always	Below 1 Ω
   J19-2 (REV) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   7