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Inspection Procedure

  1. READ VALUE OF INTELLIGENT TESTER 
    1. Check the DATA LIST for proper functioning of the engine room No. 2 relay block. Engine room No. 2 relay block.
    DATA LIST

    Item Measurement Item / Display (Range) Normal Condition Diagnostic Note
    F FOG LIGHT SW Front fog light switch signal / ON or OFF ON: Front fog light switch is in ON position
    OFF: Front fog light switch is not in ON position
    -
    DIMMER HI SW High beam switch signal / ON or OFF ON: Headlight dimmer switch is in HI position
    OFF: Headlight dimmer switch is not in HI position
    -
    LIGHT AUTO SW Auto light switch signal / ON or OFF ON: Light control switch is in AUTO position
    OFF: Light control switch is not in AUTO position
    -
    HEAD LIGHT SW Headlight control switch signal / ON or OFF ON: Light control switch is in HEAD position
    OFF: Light control switch is not In HEAD position
    -
    TAIL LIGHT SW Taillight switch signal / ON or OFF ON: Light control switch is in TAIL or HEAD position
    OFF: Light control switch is not in OFF position
    -
    TURN LEFT SW Turn signal switch LH signal / ON or OFF ON: Light control switch is in LH position
    OFF: Light control switch is not in LH position
    -
    TURN RIGHT SW Turn signal switch RH signal / ON or OFF ON: Light control switch is in RH position
    OFF: Light control switch is not in RH position
    -
    TELESC SHORT SW Telesc SHORT switch status / ON or OFF ON: Telesc switch is in SHORT position
    OFF: Telesc switch is not in SHORT position
    -
    TELESC LONG SW Telesc LONG switch status / ON or OFF ON: Telesc switch is in LONG position
    OFF: Telesc switch is not in LONG position
    -
    TILT DOWN SW Tilt DOWN switch / ON or OFF ON: TILT switch is in DOWN position
    OFF: TILT switch is not in DOWN position
    -
    TILT UP SW Tilt UP switch / ON or OFF ON: TILT switch is in UP position
    OFF: TILT switch is not In UP position
    -
    IG SW SIG Engine switch signal / ON or OFF ON: Engine switch on (IG)
    OFF: Engine switch off
    -

    NG: Go to step 2 

    OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE 

  2. INSPECT FUSE (ECU-IG RH, MPX-B, D/C CUT) 
    1. Remove the ECU-IG RH fuse from the cowl side junction block RH.
    2. Remove the MPX-B fuse from the engine room No. 1 relay block.
    3. Remove the D/C CUT fuse from the engine room No. 1 relay block.
    4. Measure the resistance of the fuses.

      Standard resistance: 

      Below 1 Ω 

    NG: REPLACE FUSE 

    OK: Go to next step 

  3. CHECK WIRE HARNESS (BATTERY - COMBINATION SWITCH - BODY GROUND) 
    1. Disconnect the K22 switch connector.
    2. Measure the voltage and resistance of the wire harness side connector.

      Standard voltage 

      VOLTAGE SPECIFICATION

      Tester Connection Condition Specified Condition
      K22-2 (IG) - K22-5 (E) Engine switch on (IG) 10 to 14 V
      K22-1 (B) - K22-5 (E) Always 10 to 14 V

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Specified Condition
      K22-5 (E) - Body ground Below 1 Ω
    Fig 1: Identifying K22 Switch Connector
    G05298856Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

    OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE