Reverse Signal Circuit: Procedure

1. Disconnect the display and navigation module display connector.
   Fig 1: Identifying J100 Connector End View

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   J100-16 (REV) - Body ground	Engine switch on (IG) Shift lever in R	11 to 14 V
   J100-16 (REV) - Body ground	Engine switch on (IG) Shift lever in any position except R	Below 1 V

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Display and Navigation Module Display)

NG → See step   2 

OK → See step   8 

1. Disconnect the display and navigation module display connector.
2. Disconnect the main body ECU LH (cowl side junction block LH) connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   J100-16 (REV) - Q2-2 (BACK)	Always	Below 1 Ω
   J100-16 (REV) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

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: Powertrain / Engine and ECT / Data List.
5. According to the display on the Techstream, read the "Data List".
   ENGINE AND ECT
   
   

   Tester Display	Test Part	Control Range	Diagnostic Note
   Shift SW Status (R Range)	Park/neutral position switch status/ ON or OFF	Shift lever is: In R: ON Not in R: OFF	When the shift lever position displayed on the Techstream differs from the actual position, the adjustment of the park/neutral position switch or shift cable may be incorrect

   OK

   Shift Lever Position	Display
   Shift lever in R	ON
   Shift lever in any position except R	OFF

NG → See step   6 

OK: Go to next step 

1. Replace the main body ECU LH (cowl side junction block LH).
2. Enter the "Vehicle Signal Check Mode" screen. Refer to Check Vehicle Signal in Operation Check. Refer to OPERATION CHECK .
   Fig 2: Identifying Vehicle Signal Check Mode Screen Display - REV Off

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Check that the display changes between ON and OFF according to the shift lever operation.

   OK

   Shift Lever Position	Display
   Shift lever in any position except R	OFF
   Shift lever in R	ON

   HINT: 

   This display is updated once per second. As a result, it is normal for the display to lag behind the actual switch operation.

NG → See step   5 

OK → END 

1. Replace the network gateway ECU. Refer to REMOVAL .
2. Enter the "Vehicle Signal Check Mode" screen. Refer to Check Vehicle Signal in Operation Check. Refer to OPERATION CHECK .
   Fig 3: Identifying Vehicle Signal Check Mode Screen Display - REV Off

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Check that the display changes between ON and OFF according to the shift lever operation.

   OK

   Condition	Display
   Shift lever in R	ON
   Shift lever in any position except R	OFF

   HINT: 

   This display is updated once per second. As a result, it is normal for the display to lag behind the actual switch operation.

NG → See step   7 

OK → END