Inspection Procedure

1. Move the shift lever to R and check if the back-up lights come on.

   OK: The back-up lights come on. 

NG: GO TO LIGHTING SYSTEM  (See PROBLEM SYMPTOMS TABLE )

OK: Go to Next Step 

1. Enter the "Display Check" mode (Vehicle Signal Check Mode) (See OPERATION CHECK  ).
2. Check that the display changes between ON and OFF according to the shift lever operation (P and R)

   OK 

   SHIFT LEVER POSITION REFERENCE
   
   

   Shift Lever Position	Display
   Reverse	ON
   Except Reverse	OFF

   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.

   Fig 1: Diagnosis Display Screen - Vehicle Signal Check Mode

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: Go to step  5

OK: Go to Next Step 

1. Disconnect multi-display connector and navigation ECU connector
   Fig 2: Identifying Terminals Of Multi-Display Connector

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

   Standard Resistance 

   TESTER CONNECTION SPECIFIED CONDITION
   
   

   Tester Connection	Condition	Specified Condition
   p1-1S (REV2) - p2-20 (REV)	Always	Below 1 Ω
   p1-15 (REV2) - Body ground	Always	10 kΩ or higher

Fig 3: Identifying Terminals Of Navigation ECU Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to Next Step 

1. Reconnect the multi-display connector.
2. Measure the voltage according to the value(s) in the table below

   Standard Voltage 

   TESTER CONNECTION SPECIFIED CONDITION
   
   

   Tester Connection	Condition	Specified Condition
   p2-20 (REV) - Body ground	Engine switch on (IG). Shift lever is moved to R	11 to 14 V
   p2-20 (REV) - Body ground	Engine switch on (IG) Shift lever is moved to any position except R.	Below 1 V

Fig 4: Identifying Terminals Of Multi-Display Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE MULTI-DISPLAY  (See REMOVAL  )

OK: REPLACE NAVIGATION ECU  (See REMOVAL  )

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

   Standard Voltage 

   TESTER CONNECTION SPECIFIED CONDITION
   
   

   Tester Connection	Condition	Specified Condition
   J50-13 (REV) - Body ground	Engine switch on (IG). Shift lever is moved to R.	11 to 14 V
   J50-13 (REV) - Body ground	Engine switch on (IG). Shift lever is moved to any position except R	Below 1 V

NG: Go to step 6 

Fig 5: Identifying Terminals Of Multi-Display Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: REPLACE MULTI-DISPLAY  (See REMOVAL  )

1. Disconnect the multi-display connector and main body ECU LH (cowl side junction block LH) connector
   Fig 6: Identifying Terminals Of Multi-Display Connector

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

   Standard Resistance 

   TESTER CONNECTION SPECIFIED CONDITION
   
   

   Tester Connection	Condition	Specified Condition
   J50-13 (REV) - Q2-2 (BACK)	Always	Below 1 Ω
   J50-13 (REV) - Body ground	Always	10 kΩ or higher

Fig 7: Identifying Terminals Of Main Body ECU LH Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to Next Step 

1. Disconnect the main body ECU LH (cowl side junction block LH) connector
2. Measure the voltage according to the value(s) in the table below

   Standard Voltage 

   TESTER CONNECTION SPECIFIED CONDITION
   
   

   Tester Connection	Condition	Specified Condition
   LJ-23 (BKUP) - Body ground	Engine switch on (IG). Shift lever is moved to R.	11 to 14 V
   LJ-23 (BKUP) - Body ground	Engine switch on (IG) Shift lever is moved to any position except R	Below 1 V

Fig 8: Identifying Terminals Of Main Body ECU LH Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE MAIN BODY ECU LH