Inspection Procedure

1. Check speedometer operation.

1. Connect LEXUS hand-held tester to DLC3.
2. Turn the ignition switch ON and push LEXUS hand-held tester main switch ON.
3. Select the ACTIVE TEST mode on LEXUS hand-held tester.
4. Check that the probe moves as LEXUS hand-held tester directs in each range.

   OK: The meter operations normally. 

1. NG: CHECK AND REPLACE COMBINATION METER ASSY 
2. OK: GO TO STEP   2 . 

1. Check output value of speedometer.

1. Connect LEXUS hand-held tester to DLC3.
2. Turn the ignition switch ON and push LEXUS hand-held tester main switch ON.
3. Select the DATA LIST mode on LEXUS hand-held tester.
4. Check that there is no difference between the speed value output from the speed sensor displayed by LEXUS hand-held tester and the speed value displayed by the speedometer when driving the vehicle.

   OK: There is almost no difference from the displayed speed value. 

1. NG: GO TO BRAKE SYSTEM 
2. OK: GO TO STEP   3 . 

1. Check voltage between terminal S1 of combination meter and body ground.

1. Remove the combination meter with connectors still connected.
2. Shift the shift lever to neutral.
3. Jack up one of the rear wheel.
4. Turn the ignition switch ON.
5. Measure voltage between terminal S1 of combination meter and body ground while the rear wheels are turned slowly.
   Fig 1: Locating Combination Meter Terminal S1

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Voltage is generated intermittently. 

Fig 2: Identifying Oscilloscope Waveform

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. OK: CHECK AND REPLACE COMBINATION METER ASSY 
2. NG: GO TO STEP   4 . 

1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
2. OK: CHECK AND REPLACE SKID CONTROL ECU ASSY