Rear Sunshade Shift-linked Function does not Operate when Shift Lever is Moved to R Position [08/2020 - ]: 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.

   Powertrain > Engine > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   Shift SW Status (R Range)	Park/neutral position switch status	ON or OFF	ON: Shift lever in R OFF: Shift lever not in R	-

   Powertrain > Engine > Data List 

   Tester Display
   Shift SW Status (R Range)

   OK

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

   Result

   Proceed to
   OK
   NG

Result: 

NG 

GO TO SFI SYSTEM 

For 2GR-FKS: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ]

For A25A-FKS: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2020 - ]

Result: 

OK 

See step  2

1. Enter the following menus: Body Electrical / Main Body / Active Test.
2. Perform the Active Test according to the display on the Techstream.

   HINT: 

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

   Body Electrical > Main Body > Active Test 

   Tester Display	Measurement Item	Control Range	Diagnostic Note
   Reverse Gear Signal	Reverse signal	OFF/ON	-

   Body Electrical > Main Body > Active Test 

   Tester Display
   Reverse Gear Signal

   OK

   The rear window shade assembly is lowered.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to  REMOVAL [06/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - 09/2022]  , or refer to  REMOVAL [09/2022 - ] 

Result: 

NG 

See step  3

1. Disconnect the N63 rear sunshade relay connector.
2. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   N63-3 (REV) - Body ground	Engine switch on (IG), shift lever in any position other than R → R	11 to 14 V → Below 1 V

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE REAR SUNSHADE RELAY. Refer to  REMOVAL [06/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - 09/2022]  , or refer to  REMOVAL [09/2022 - ] 

Result: 

NG 

See step  4

1. Disconnect the G36 main body ECU (multiplex network body ECU) connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   G36-6 (REV) - N63-3 (REV)	Always	Below 1 Ω
   G36-6 (REV) or N63-3 (REV) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to  REMOVAL [06/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - 09/2022]  , or refer to  REMOVAL [09/2022 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR