Inspection Procedure

OPERATION OF SPEEDOMETER
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: GO TO METER / GAUGE SYSTEM

OK: Go to next step
CHECK RADIO RECEIVER (SPD VOLTAGE)
1. Disconnect the R5 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 power switch ON (IG).
    
    Fig 1: Identifying R5 Receiver Connector
    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.
OK: REPLACE RADIO RECEIVER

Fig 2: Voltage Pulses For SPD
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: Go to next step

CHECK WIRE HARNESS (COMBINATION METER - RADIO RECEIVER)

Disconnect the R5 receiver connector.
Disconnect the C10 meter connector.

Measure the resistance of the wire harness side connectors.

Standard resistance

STANDARD RESISTANCE

Tester Connection	Specified Condition
R5-3 (SPD) - C10-13	Below 1 Ω

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

Fig 3: Identifying R5 Receiver Connector And C10 Meter Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next step

CHECK WIRE HARNESS (RADIO RECEIVER - BODY GROUND)

Disconnect the R5 receiver connector.

Measure the resistance of the wire harness side connector.

Standard resistance

STANDARD RESISTANCE

Tester Connection	Specified Condition
R5-3 (SPD) - Body ground	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.

Fig 4: Identifying R5 Receiver Connector

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

OK: REPLACE RADIO RECEIVER