Inspection Procedure

1. Operate the hand-held tester according to the steps on the display and PERFORM the "ACTIVE TEST".
   ACTIVE TEST DETAILS
   
   

   Item	Test Details	Diagnostic Note
   SPEED METER	0 / 40 / 80 / 120 / 160	-

1. NG: CHECK AND REPLACE COMBINATION METER ASSY 
2. OK: Go to next step. 

1. Operate the hand-held tester according to the steps on the display and select "DATA LIST".
   DATA LIST TEST DETAILS
   
   

   Item	Test Details	Diagnostic Note
   SPEED METER	Vehicle speed / Min.: 0 km/h, Max.: 255 km/h	Almost same at the meter speed (When driving)

1. OK: CHECK AND REPLACE COMBINATION METER ASSY 
2. NG: Go to next step. 

1. Operate the hand-held tester according to the steps on the display and select "DATA LIST".
   DATA LIST TEST DETAILS
   
   

   Item	Test Details	Diagnostic Note
   SPD1	Vehicle speed / Min.: 0 km/h, Max.: 255 km/h	-

1. NG: GO TO BRAKE SYSTEM 
2. OK: Go to next step. 

(REFERENCE) INSPECTION USING OSCILLOSCOPE 

1. Check the input signal waveform.
   1. Remove the combination meter assy.
   2. Connect the oscilloscope to the terminal C10-35 and C10-30 of the combination meter assy.
   3. Start the engine.
   4. Check the signal waveform.
      ITEM CONTENT
      
      

      Item	Contents
      Tool setting	5 V/ DIV, 20 ms/ DIV
      Vehicle condition	Driving at approx. 20Km/h

      NOTE: As the vehicle speed becomes higher, the cycle of the signal waveform becomes shorter.
      Fig 1: Identifying Combination Meter Connector Terminals C10-35 & C10-30

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 2: Input Signal Waveform Representation

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. OK: CHECK AND REPLACE COMBINATION METER ASSY 
2. NG: Go to next step. 

1. Remove the combination meter.
2. Disconnect the connector from skid control ECU.
3. Check continuity between the terminal S3-12, 17 (SP1) of skid control ECU and the terminal C10-35 of the combination meter connector.

   Standard: Continuity. 

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