LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 2009 >> Highlander Limited, FWD >> Repair and Diagnosis >> Body & Frame >> Exterior Body Panels >> (Door / Hatch) (Except Hybrid) >> Back Door Closer System >> Back Door Closer does not Operate >> Inspection Procedure

Inspection Procedure

  1. CHECK BACK DOOR LOCK FUNCTION 
    1. Check if the back door is fully closed by hand.

      NG: IMPROPER FIT OF BACK DOOR, OR A FOREIGN OBJECT IS STUCK IN BACK DOOR 

      OK: Go to next step 

  2. INITIALIZE POWER BACK DOOR ECU 
    1. Check that the power back door drive unit (power back door ECU) can be initialized (See INITIALIZATION ).
  3. CHECK BACK DOOR CLOSER SYSTEM 
    1. Check that the back door closer system operation.

      OK: 

      Back door closer system operates normally. 

      NG: Go to step 4 

      OK: END 

  4. CHECK DTC OUTPUT 
    1. Check for the DTCs (See DIAGNOSIS SYSTEM ).

    Result 

    RESULT CHART

    Result Proceed to
    DTC is not output A
    B2250 is output B
    B2251 is output C

    B: GO TO DTC CHART (B2250)  (See DTC B2250 BACK DOOR CLOSER OPERATION MALFUNCTION )

    C: GO TO DTC CHART (B2251)  (See DTC B2251 BACK DOOR CLOSER SWITCH MALFUNCTION )

    A: Go to next step 

  5. INSPECT FUSE (ECU IG NO. 1, ECU-B) 
    1. Remove the ECU IG No. 1 fuse from the instrument panel junction block and ECU-B fuse from the engine room relay block.
    2. Measure the resistance according to the value (s) in the table below.

    Standard resistance 

    RESISTANCE SPECIFICATION

    Tester Connection Condition Specified Condition
    ECU IG NO. 1 Always Below 1 Ω
    ECU-B Always Below 1 Ω

    NG: REPLACE FUSE 

    OK: Go to next step 

  6. CHECK FUSIBLE LINK BLOCK ASSEMBLY (PBD FUSE) 
    1. Remove the fusible link block assembly.
    2. Measure the resistance according to the value (s) in the table below.

    Standard resistance 

    RESISTANCE SPECIFICATION

    Tester Connection Condition Specified Condition
    A-B Always Below 1 Ω

    HINT:

    PBD 30A fuse is located in the fusible link block assembly.

    NG: REPLACE FUSIBLE LINK BLOCK ASSEMBLY 

    Fig 1: Removing Fusible Link Block Assembly
    G05422019Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to next step 

  7. CHECK HARNESS AND CONNECTOR (BODY GROUND) 
    1. Disconnect the 015 power back door ECU connector.
    2. Measure the voltage according to the value (s) in the table below.

    Standard voltage 

    VOLTAGE SPECIFICATION

    Tester Connection Condition Specified Condition
    O15-8 (IG) - Body ground Ignition switch on (IG) 11 to 14 V
    O15-10 (ECUB) - Body ground Always 11 to 14 V
    O15-12 (B) - Body ground Always 11 to 14 V

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Fig 2: Identifying 015 Power Back Door ECU Connector Terminals
    G06113962Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to next step 

  8. CHECK HARNESS AND CONNECTOR (POWER SOURCE) 
    1. Disconnect the 015 power back door ECU connector.
    2. Measure the resistance according to the value (s) in the table below.

    Standard resistance 

    RESISTANCE SPECIFICATION

    Tester Connection Condition Specified Condition
    O15-11 (GND) - Body ground Always Below 1 Ω

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Fig 3: Identifying 015 Power Back Door ECU Connector Terminals
    G05422021Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to next step 

  9. INSPECT BACK DOOR LOCK 
    Fig 4: Inspecting Back Door Lock
    G05420307Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Remove the back door lock.
    2. Apply battery voltage and check operation of the door lock motor.

      OK 

      DOOR LOCK MOTOR OPERATION CHART

      Measurement Condition Specified Condition
      Battery positive (+) → Terminal 1 (DC+)
      Battery negative (-) → Terminal 2 (DC-)      		 Latch turns to full-latch position
      Battery positive (+) → Terminal 2 (DC-)
      Battery negative (-) → Terminal 1 (DC+)      		 Latch turns to open-latch position
    3. Measure the resistance of the switch.

    Standard resistance: 

    Full-latch switch 

    RESISTANCE SPECIFICATION

    Tester Connection Door Lock Latch Position Specified Condition
    5 (HAF) - 4 (GND) Over-latch Below 1 Ω
    5 (HAF) - 4 (GND) Open-latch 10 kΩ or higher
    5 (HAF) - 4 (GND) Full-latch 10 kΩ or higher
    5 (HAF) - 4 (GND) Half-latch 10 kΩ or higher

    Back door courtesy light switch 

    RESISTANCE SPECIFICATION

    Tester Connection Door Lock Latch Position Specified Condition
    3 (BDCY) - 4 (GND) Open-latch Below 1 Ω
    3 (BDCY) - 4 (GND) Half-latch Below 1 Ω
    3 (BDCY) - 4 (GND) Full-latch 10 kΩ or higher
    3 (BDCY) - 4 (GND) Over-latch 10 kΩ or higher

    NG: REPLACE BACK DOOR LOCK  (See REMOVAL )

    OK: Go to next step 

  10. CHECK HARNESS AND CONNECTOR (BACK DOOR LOCK - POWER BACK DOOR ECU AND BODY GROUND) 
    1. Disconnect the T4 door lock connector.
    2. Disconnect the 015 ECU connector.
    3. Measure the resistance according to the value (s) in the table below.

    Standard resistance 

    RESISTANCE SPECIFICATION

    Tester Connection Condition Specified Condition
    T4-1 (DC+) - O15-2 (DC+) Always Below 1 Ω
    T4-2 (DC-) - O15-1 (DC-) Always Below 1 Ω
    T4-5 (HAF) - O15-22 (HAF) Always Below 1 Ω
    T4-6 (POS) - O15-24 (POS) Always Below 1 Ω
    T4-3 (BDCY) - O15-20 (FUL) Always Below 1 Ω
    T4-4 (GND) - Body ground Always Below 1 Ω
    T4-1 (DC+) - Body ground Always 10 kΩ or higher
    T4-2 (DC-) - Body ground Always 10 kΩ or higher
    T4-5 (HAF) - Body ground Always 10 kΩ or higher
    T4-6 (POS) - Body ground Always 10 kΩ or higher
    T4-3 (BDCY) - Body ground Always 10 kΩ or higher

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Fig 5: Identifying T4 Door Lock And 015 ECU Connector Terminals
    G05422023Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: REPLACE POWER BACK DOOR DRIVE UNIT (POWER BACK DOOR ECU)  (See REMOVAL )

scientia non olet · About LEMON Manuals