Inspection Procedure

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

   HINT:

   The vehicle speed sensor is operating normally if the speedometer display is normal.

NG: CHECK SPEEDOMETER CIRCUIT 

OK: Go to Next Step 

1. Shift the lever to the neutral position.
2. Jack up the vehicle.
3. Disconnect the TCM connector.
   Fig 1: Identifying TCM Connector B40

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Turn the engine switch on (IG).
5. Measure the voltage according to the value (s) in the table below as the wheel is turned slowly.

   Standard Voltage 

   STANDARD VOLTAGE SPECIFICATION
   
   

   Tester Connection	Switch Condition	Specified Condition
   B40-3 (SPD1) - B40-8 (E1)	Engine switch on (IG)	Voltage is generated intermittently

   Fig 2: Voltage Waveform Wheel Turning

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   HINT:

   The output voltage should fluctuate up and down similarly to the diagram when the wheel is turned slowly.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE TCM