Inspection Procedure

1. Enter the "Display Check" mode and select "Vehicle Signal Check" (See OPERATION CHECK  ).
2. Check that the vehicle speed on the display changes according to the actual vehicle speed.

   OK: The display changes according to the actual vehicle speed. 

   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 vehicle speed.

NG: Go to step 2 

Fig 1: Diagnosis Display - Vehicle Signal Check Mode Screen

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

1. Drive the vehicle and check if the function of the speedometer in the combination meter is normal.

   OK: Actual vehicle speed and the speed indicated on the speedometer are the same. 

   HINT:

   The vehicle speed sensor is functioning normally when the indication on the speedometer is normal.

NG: GO TO METER/GAUGE SYSTEM  (See PROBLEM SYMPTOMS TABLE )

OK: Go to Next Step 

1. Disconnect the F23 display connector.
2. Disconnect the E77 meter connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance 

   TESTER CONNECTION SPECIFIED CONDITION
   
   

   Tester Connection	Condition	Specified Condition
   F23-14(SPD) - E77-6 (+S)	Always	Below 1 Ω
   F23-14 (SPD) - Body ground	Always	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

Fig 2: Identifying Display And Navigation Module Display And Combination Meter Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: REPLACE DISPLAY AND NAVIGATION MODULE DISPLAY  (See REMOVAL  )