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Inspection Procedure

  1. READ VALUE OF INTELLIGENT TESTER 
    1. Connect the intelligent tester to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the intelligent tester main switch on.
    4. Select the item (s) below in the DATA LIST, and read the display on the intelligent tester.

      DATA LIST: BODY (Main Body ECU RH) 

      DATA LIST - BODY (MAIN BODY ECU RH)

      Item Measurement Item / Display (Range) Normal Condition Diagnostic Note
      ILLUMI SW Front interior light switch (marked ON/ OFF) signal/ ON or OFF ON: Front interior light switch (marked ON/OFF) is pushed in
      OFF: Front interior light switch (marked ON/OFF) is not pushed in      		 -

      DATA LIST: BODY NO. 3 (Main Body ECU LH) 

      DATA LIST - BODY NO. 3 (MAIN BODY ECU LH)

      Item Measurement Item / Display (Range) Normal Condition Diagnostic Note
      INTERIOR LIGHT Front interior light switch (marked DOOR) signal/ ON or OFF ON: Front interior light switch (marked DOOR) is pushed in
      OFF: Front interior light switch (marked DOOR) is not pushed in      		 -

      OK: Switch condition can be displayed. 

      Result 

      RESULT CHART

      Result Proceed to
      Indication for "ILLUMI SW" does not change A
      Indication for "INTERIOR LIGHT" does not change B
      Indications for both "ILLUMI SW" and "INTERIOR LIGHT" do not change C
      OK D

    A: Go to step 2 

    B: Go to step  4

    C: Go to step  6

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

  2. INSPECT OVERHEAD J/B 
    1. Remove the overhead J/B.
    2. Measure the resistance according to the value (s) in the table.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Switch Condition Specified Condition
      R5-34 (CILL) - R5-18 (GND3) Front interior light switch (marked ON/ OFF) is not pushed in 10 kΩ or higher
      R5-34 (CILL) - R5-18 (GND3) Front interior light switch (marked ON/ OFF) is pushed in Approx. 10 Ω
      Fig 1: Identifying Overhead J/B Connector Terminals
      G05320398Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE OVERHEAD J/B 

    OK: Go to Next Step 

  3. CHECK HARNESS AND CONNECTOR (OVERHEAD J/B - MAIN BODY ECU RH) 
    1. Disconnect the R5 overhead J/B connector.
    2. Disconnect the J75 main body ECU RH connector.
    3. Measure the resistance according to the value (s) in the table.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      R5-34 (CILL) - J75-4 (UL2) Always Below 1 Ω
      R5-34 (CILL) - Body ground Always 10 kΩ or higher
      Fig 2: Identifying J75 Main Body ECU RH Connector Terminals
      G05320399Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE MAIN BODY ECU LH (COWL SIDE J/B LH) 

  4. INSPECT OVERHEAD J/B 
    1. Remove the overhead J/B.
    2. Measure the resistance according to the value (s) in the table.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Switch Condition Specified Condition
      R5-35 (DOOR) - R5-18 (GND3) Front Interior light switch (marked DOOR) is not pushed In 10 kΩ or higher
      R5-35 (DOOR) - R5-18 (GND3) Front interior light switch (marked DOOR) Is pushed In Approx. 10 Ω
      Fig 3: Identifying Overhead J/B Connector Terminal
      G05320400Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE OVERHEAD J/B 

    OK: Go to Next Step 

  5. CHECK HARNESS AND CONNECTOR (OVERHEAD J/B - MAIN BODY ECU LH) 
    1. Disconnect the R5 overhead J/B connector.
    2. Disconnect the Q3 main body ECU LH connector.
    3. Measure the resistance according to the value (s) in the table.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      R5-35 (DOOR) - Q3-11 (BDCY) Always Below 1 Ω
      R5-35 (DOOR) - Body ground Always 10 kΩ or higher
      Fig 4: Identifying R5 Overhead J/B Connector Terminals
      G05320401Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE MAIN BODY ECU LH (COWL SIDE J/B LH) 

  6. INSPECT OVERHEAD J/B 
    1. Remove the overhead J/B.
    2. Measure the resistance according to the value (s) in the table.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Switch Condition Specified Condition
      R5-35 (DOOR) - R5-18 (GND3) Front interior light switch (marked DOOR) is not pushed in 10 kΩ or higher
      R5-35 (DOOR) - R5-18 (GND3) Front interior light switch (marked DOOR) is pushed in Approx. 10 Ω
      R5-34 (CILL) - R5-18 (GND3) Front interior light switch (marked ON/ OFF) is not pushed in 10 kΩ or higher
      R5-34 (CILL) - R5-18 (GND3) Front interior light switch (marked ON/ OFF) is pushed in Approx. 10 Ω
      Fig 5: Identifying Overhead J/B Connector Terminal
      G05320402Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE OVERHEAD J/B 

    OK: REPAIR OR REPLACE HARNESS OR CONNECTOR (OVERHEAD J/B GROUND CIRCUIT) 

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