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Inspection Procedure

  1. PERFORM ACTIVE TEST (COMPASS DISPLAY) 
    1. Select the ACTIVE TEST, use the hand-held tester to generate a control command, and then check that all segments of the compass are displayed.

      Combination meter assy: 

      COMPASS DISPLAY

      Item Test Details Diagnostic Note
      COMPASS DISP All segments of compass display ON/OFF Confirm that vehicle is stopped and engine is idling

      OK: All segments of compass are displayed. 

  2. CALIBRATE COMPASS 
    1. Perform calibration (See CALIBRATION  ).
    • NG: Go to step   3 
    • OK: NORMAL 
  3. CHECK WIRE HARNESS (MAGNETIC FIELD SENSOR - COMBINATION METER ASSY) 
    1. Disconnect the M6 sensor connector.
    2. Disconnect the C9 meter connector.
    3. Measure the resistance of the wire harness side connectors.

      Standard: 

      MAGNETIC FIELD SENSOR - COMBINATION METER ASSY

      Tester Connection Specified Condition
      M3-2 (C-GND) - C9-2 (E) Below 1 ohms
      M3-5 (VX) - C9-5 (MSSR) Below 1 ohms
      M3-3 (VY) - C9-3 (YSSR) Below 1 ohms
      M3-4 (VMZD) - C9-4 (COMN) Below 1 ohms
      M3-1 (D-SIGNAL) - C9-1 (+F) Below 1 ohms
      Fig 1: Checking Wire Harness (Magnetic Field Sensor - Combination Meter Assy)
      G02956829Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    • NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
    • OK: Go to next step. 
  4. CHECK OPERATION OF COMBINATION METER WITH A NEW OR NORMALLY FUNCTIONING COMBINATION METER 
    1. Temporarily replace the combination meter with a new or normally functioning one.
    2. Check that the malfunction disappears.

      OK: Malfunction disappears.