Inspection Procedure

1. Move the shift lever to the R position.
2. Check the back-up light.

   OK: 

   The back-up light is ON. 

   NG: GO TO LIGHTING SYSTEM  (See HOW TO PROCEED WITH TROUBLESHOOTING )

   OK: Go to Next Step 

1. Enter the "Display Check" mode (Vehicle Signal Check Mode) (see DISPLAY CHECK MODE ).
2. Check that the display changes between ON and OFF according to the shift lever operation.

   OK 

   DISPLAY REFERENCE
   
   

   Shift Lever Position	Display
   R	ON
   Except R	OFF

Fig 1: Display - Vehicle Signal Check Mode Screen

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

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

NG: Go to step 3 

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE  (See PROBLEM SYMPTOMS TABLE )

1. Disconnect the L59 display connector.
2. Measure the voltage according to the value (s) in the table below.

   Standard voltage 

   VOLTAGE SPECIFIED CONDITIONS
   
   

   Tester Connection	Switch Condition	Specified Condition
   S63-1 (BCK1) - Body ground	Engine switch on (IG), shift lever R position	11 to 14 V
   S63-1 (BCK1) - Body ground	Engine switch on (IG), shift lever P position	Below 1 V

   Fig 2: Identifying S63 Rear Junction Block ECU Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NG: GO TO LIGHTING SYSTEM  (See HOW TO PROCEED WITH TROUBLESHOOTING )

   OK: Go to Next Step 

1. Disconnect the L59 display connector.
2. Disconnect the S63 ECU connector.
3. Measure the resistance according to the value (s) in the table below.

   Standard resistance 

   RESISTANCE SPECIFIED CONDITIONS
   
   

   Tester Connection	Condition	Specified Condition
   L59-13 (REV) - S63-1 (BCK1)	Always	Below 1 Ω
   L59-13 (REV) -Body ground	Always	10 kΩ or higher

   Fig 3: Identifying L59 Multi-Display And S63 Rear Junction Block ECU Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

   OK: Go to Next Step 

1. Temporarily replace the ECU with a new or normally functioning one.
2. Check that the multi-display displays the rear view of the vehicle when the shift lever position is changed to R.

   NG: REPLACE MULTI-DISPLAY  (See REMOVAL )

   OK: END (LUGGAGE ROOM JUNCTION BLOCK IS DEFECTIVE)