Inspection Procedure

(REFERENCE) INSPECTION USING OSCILLOSCOPE 

1. Check the input signal waveform.
   1. Remove the combination meter assy.
   2. Connect the oscilloscope to the terminal C11-15 and C9-9 of combination meter assy.
   3. Start the engine.
   4. Check the signal waveform.
      Fig 1: Connecting Oscilloscope To Terminal C11-15 And C9-9

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

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   ITEM REFERENCE CHART
   
   

   Item	Contents
   Tool setting	5 V/ DIV, 200 ms/ DV
   Vehicle condition	Driving at approx. 20Km/h

HINT: 

As the vehicle speed becomes higher, the cycle shorter.

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 the continuity between terminal S10-16 (SP1) of skid control ECU and C11-15 of combination meter connector.

   Standard: There is continuity. 

   Fig 3: Checking Continuity Between Terminal S10-16 (SP1) And C11-15

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. OK: CHECK AND REPLACE SKID CONTROL ECU ASSY 
2. NG: GO TO NEXT STEP 
3. REPAIR OR REPLACE HARNESS OR CONNECTOR