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Inspection Procedure

WARNING: This page is about a different car, the 2004 Toyota Sienna. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Start the inspection from step 1 in the case of using the hand-held tester, and start from step  2 in the case of not using the hand-held tester.
  1. READ VALUE OF HAND-HELD TESTER 
    1. Connect the hand-held tester to DLC3.
    2. Turn the ignition switch to ON and push the hand-held tester main switch ON.
    3. Select the items below in the DATA LIST, and read the displays on the hand-held tester.

    BODY NO.1: 

    Fig 1: Measurement Item/Display Normal Condition Table (Body No. 1)
    G02933908Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    BACK DOOR: 

    Fig 2: Measurement Item/Display Normal Condition Table (Back Door)
    G02933909Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE (See  PROBLEM SYMPTOMS TABLE  ) 
    2. NG: Go to next step. 
  2. INSPECT COURTESY LAMP SWITCH 
    1. Inspect each of the courtesy lamp switch continuity (See INSPECTION ).
    1. NG: REPLACE COURTESY LAMP SWITCH 
    2. OK: Go to next step. 
  3. INSPECT BACK DOOR LOCK ASSY 
    1. Inspect the courtesy lamp switch terminal of the back door lock assy (See INSPECTION ).
    1. NG: REPLACE BACK DOOR LOCK ASSY 
    2. OK: Go to next step. 
  4. CHECK HARNESS AND CONNECTOR 
    1. Disconnect the 1P, B7 and B9 connector from the instrument panel junction block assy.
    2. Check the continuity between each of the terminals of instrument panel junction block assy connector side and body ground as shown in the chart below.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION

      Inspect area Tester connection Specified condition
      Front driver door open --> close B9-14 - Body ground Continuity --> No continuity
      Front passenger door open --> close B7-23 - Body ground Continuity --> No continuity
      Rear RH slide door open --> close B9-16 - Body ground Continuity --> No continuity
      Rear LH slide door open --> close 1P-19 - Body ground Continuity --> No continuity
      Fig 3: Instrument Panel Junction Block Assy Front Side Connectors
      G02933910Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 4: Identifying Instrument Panel Junction Block Assy Back Side Connector
      G02933911Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
    2. OK: Go to next step. 
  5. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSY (BACK DOOR COURTESY LAMP SWITCH CIRCUIT) 
    1. Measure voltage between the terminal B7-25 of the multiplex network body ECU and body ground.

      Standard: 

      TESTER CONNECTION SPECIFICATION CONDITION

      Tester connection Condition Specified condition
      B7-25 - Body ground Back door is open Below 1 V
      B7-25 - Body ground Back door is closed 10 to 14 V
      Fig 5: Identifying Instrument Panel Junction Block Assy (Back Door Courtesy Lamp Switch Connectors)
      G02933912Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE (See  PROBLEM SYMPTOMS TABLE  ) 
    2. NG: Go to next step. 
  6. CONFIRM VEHICLE MODELS 
    1. Check the vehicle models.

      A: w/o Power back door

      B: w/ Power back door

    1. A: REPAIR OR REPLACE HARNESS OR CONNECTOR 
    2. B: Go to next step. 
  7. INSPECT POWER BACK DOOR SYSTEM 
    1. Inspect the power back door circuit (See HOW TO PROCEED WITH TROUBLESHOOTING ).
    1. NG: CHECK AND REPLACE POWER BACK DOOR SYSTEM 
    2. OK: REPAIR OR REPLACE HARNESS OR CONNECTOR 
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