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Inspection Procedure

WARNING: This page is about a different car, the 2004 Toyota Camry. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK CLOCK ASSY (IG, TAU) 
    1. Check signal waveform (TAU signal).
      1. Connect the oscilloscope to the terminals 1 (GND) and 7 (TAU) of clock assy connector.
      2. Start engine.
      3. Check the signal waveform.
      WAVEFORM REFERENCE

      Item Contents
      Tool setting 10 V/DIV, 100 ms/DV
      Vehicle condition Engine idle speed
      Fig 1: Identifying Clock Assy (IG, ATU)
      G02895165Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 2: Injector Signal & Magnification Waveform
      G02895166Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Check voltage (IG signal).
      1. Turn the ignition switch to ON.
      2. Measure the voltage between terminal 20 (IG) of clock assy and body ground.

      Standard voltage: 10 - 14 V 

      Result: 

      RESULT

      A TAU signal: NG
      B IG signal: NG
      C OK
      Fig 3: Identifying Clock Assy Connector Terminal IG
      G02895167Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. A: GO TO FUEL SYSTEM 
    2. B: Go to step   2 
    3. C: CHECK AND REPLACE CLOCK ASSY 
  2. INSPECT FUSE (GAUGE 1) 
    1. Check that continuity exists of GAUGE 1 fuse.
    1. NG: REPLACE FUSE 
    2. OK: REPAIR OR REPLACE HARNESS OR CONNECTOR 
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