Inspection Procedure

1. Drive the vehicle and check if the function of the speedometer on 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: CHECK COMBINATION METER ASSEMBLY 

OK: Go to Next Step 

1. Disconnect the radio receiver connector.
2. Measure the voltage.
   1. Jack up either one of the drive wheels.
   2. Move the shift lever to the neutral position.
   3. Turn the ignition switch to the ON position.

      *1: 6 Speaker without Rear Seat Entertainment System.

      *2: 6 Speaker with Rear Seat Entertainment System.

      Fig 1: Identifying Radio Receiver Connector Terminal

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   4. Measure the voltage between terminal SPD of the radio receiver and body ground when the drive wheels are turned slowly.

      OK: Voltage pulses as shown in the illustration. 

Fig 2: Voltage Waveform Graph
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: Go to step 3 

OK: REPLACE RADIO RECEIVER 

1. Disconnect the radio receiver connector and combination meter connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Condition	Specified Condition
   SPD-C10-36	Ignition switch OFF	Below 1 Ω

   *1: 6 Speaker without Rear Seat Entertainment System.

   *2: 6 Speaker with Rear Seat Entertainment System.

Fig 3: Identifying Radio Receiver Connector And Combination Meter Connector Terminal
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to Next Step 

1. Disconnect the radio receiver connector and combination meter connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Condition	Specified Condition
   SPD - Body ground	Ignition switch OFF	10 kΩ or higher

   HINT:

   If the resistance between terminal SPD and body ground is less than 10 kΩ, there may be a short in a wire harness, connector, or an ECU that is connected to the SPD signal wire.

   *1: 6 Speaker without Rear Seat Entertainment System.

   *2: 6 Speaker with Rear Seat Entertainment System.

Fig 4: Identifying Radio Receiver Connector And Combination Meter Connector Terminal
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OR CHECK EACH ECU 

OK: REPLACE COMBINATION METER