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Steering Pad Switch Circuit [11/2021 - ]: Procedure

  1. CONFIRM PROBLEM SYMPTOMS 
    1. Check the problem symptoms.

      Result

      Result Proceed to
      All switches cannot be operated A
      Driving assist switch, +RES switch, -Switch, CANCEL switch cannot be operated B
      Only driving assist switch cannot be operated C
      Only +RES switch cannot be operated
      Only -switch cannot be operated
      Only CANCEL switch cannot be operated
      Only driving assist mode select switch cannot be operated
      Only vehicle-to-vehicle distance switch cannot be operated
      Only LTA switch cannot be operated
      Driving assist mode select switch, vehicle-to-vehicle distance switch, and LTA switch cannot be operated D

    Result: 

    B 

    See step  6

    Result: 

    C 

    REPLACE STEERING PAD SWITCH ASSEMBLY. Refer to  REMOVAL [11/2021 - ] 

    Result: 

    D 

    See step  10

    Result: 

    A 

    See step  2

  2. INSPECT STEERING PAD SWITCH ASSEMBLY 

    Refer to INSPECTION [11/2021 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE STEERING PAD SWITCH ASSEMBLY. Refer to  REMOVAL [11/2021 - ] 

    Result: 

    OK 

    See step  3

  3. INSPECT SPIRAL CABLE SUB-ASSEMBLY 

    Refer to INSPECTION [11/2021 - ]

    Result

    Result Proceed to
    OK (for Gasoline Model) A
    OK (for HEV Model) B
    NG C

    Result: 

    B 

    See step  5

    Result: 

    C 

    REPLACE SPIRAL CABLE SUB-ASSEMBLY. Refer to  REMOVAL [11/2021 - ] 

    Result: 

    A 

    See step  4

  4. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - ECM) 
    1. Disconnect the A20*1 or A19*2 ECM connector.
      1. *1: A25A-FKS
      2. *2: T24A-FTS
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      FOR A25A-FKS WITH POWER TILT AND POWER TELESCOPIC STEERING COLUMN SYSTEM

      Tester Connection Condition Specified Condition
      D144-2 (ECC) - A20-28 (ECCS) Always Below 1 Ω
      D144-2 (ECC) or A20-28 (ECCS) - Body ground Always 10 kΩ or higher
      FOR A25A-FKS WITHOUT POWER TILT AND POWER TELESCOPIC STEERING COLUMN SYSTEM

      Tester Connection Condition Specified Condition
      D25-2 (ECC) - A20-28 (ECCS) Always Below 1 Ω
      D25-2 (ECC) or A20-28 (ECCS) - Body ground Always 10 kΩ or higher
      FOR T24A-FTS WITH POWER TILT AND POWER TELESCOPIC STEERING COLUMN SYSTEM

      Tester Connection Condition Specified Condition
      D144-2 (ECC) or A19-47 (EPPM) - Body ground Always Below 1 Ω
      D144-2 (ECC) or A19-47 (EPPM) - Body ground Always 10 kΩ or higher
      FOR T24A-FTS WITHOUT POWER TILT AND POWER TELESCOPIC STEERING COLUMN SYSTEM

      Tester Connection Condition Specified Condition
      D25-2 (ECC) or A19-47 (EPPM) - Body ground Always Below 1 Ω
      D25-2 (ECC) or A19-47 (EPPM) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [11/2021 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  5. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - BODY GROUND) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      W/ POWER TILT AND POWER TELESCOPIC STEERING COLUMN SYSTEM

      Tester Connection Condition Specified Condition
      D144-2 (ECC) - Body ground Always Below 1 Ω
      W/O POWER TILT AND POWER TELESCOPIC STEERING COLUMN SYSTEM

      Tester Connection Condition Specified Condition
      D25-2 (ECC) - Body ground Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [11/2021 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  6. INSPECT STEERING PAD SWITCH ASSEMBLY 

    Refer to INSPECTION [11/2021 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE STEERING PAD SWITCH ASSEMBLY. Refer to  REMOVAL [11/2021 - ] 

    Result: 

    OK 

    See step  7

  7. INSPECT SPIRAL CABLE SUB-ASSEMBLY 

    Refer to INSPECTION [11/2021 - ]

    Result

    Result Proceed to
    OK (for Gasoline Model) A
    OK (for HEV Model) B
    NG C

    Result: 

    B 

    See step  9

    Result: 

    C 

    REPLACE SPIRAL CABLE SUB-ASSEMBLY. Refer to  REMOVAL [11/2021 - ] 

    Result: 

    A 

    See step  8

  8. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - ECM) 
    1. Disconnect the A20*1 or A19*2 ECM connector.
      1. *1: A25A-FKS
      2. *2: T24A-FTS
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      FOR A25A-FKS WITH POWER TILT AND POWER TELESCOPIC STEERING COLUMN SYSTEM

      Tester Connection Condition Specified Condition
      D144-13 (CCS) - A20-27 (CCS) Always Below 1 Ω
      D144-13 (CCS) or A20-27 (CCS) - Body ground Always 10 kΩ or higher
      FOR A25A-FKS WITHOUT POWER TILT AND POWER TELESCOPIC STEERING COLUMN SYSTEM

      Tester Connection Condition Specified Condition
      D25-13 (CCS) - A20-27 (CCS) Always Below 1 Ω
      D25-13 (CCS) or A20-27 (CCS) - Body ground Always 10 kΩ or higher
      FOR T24A-FTS WITH POWER TILT AND POWER TELESCOPIC STEERING COLUMN SYSTEM

      Tester Connection Condition Specified Condition
      D144-13 (CCS) - A19-61 (CCS) Always Below 1 Ω
      D144-13 (CCS) or A19-61 (CCS) - Body ground Always 10 kΩ or higher
      FOR T24A-FTS WITHOUT POWER TILT AND POWER TELESCOPIC STEERING COLUMN SYSTEM

      Tester Connection Condition Specified Condition
      D25-13 (CCS) - A19-61 (CCS) Always Below 1 Ω
      D25-13 (CCS) or A19-61 (CCS) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE ECM 

    for A25A-FKS: Refer to REMOVAL [11/2021 - ]

    for T24A-FTS: Refer to REMOVAL [11/2021 - ]

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  9. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - HYBRID VEHICLE CONTROL ECU) 
    1. Disconnect the D67 hybrid vehicle control ECU connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      W/ POWER TILT AND POWER TELESCOPIC STEERING COLUMN SYSTEM

      Tester Connection Condition Specified Condition
      D144-13 (CCS) - D67-29 (CCS) Always Below 1 Ω
      D144-13 (CCS) or D67-29 (CCS) - Body ground Always 10 kΩ or higher
      W/O POWER TILT AND POWER TELESCOPIC STEERING COLUMN SYSTEM

      Tester Connection Condition Specified Condition
      D25-13 (CCS) - D67-29 (CCS) Always Below 1 Ω
      D25-13 (CCS) or D67-29 (CCS) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE HYBRID VEHICLE CONTROL ECU. Refer to  REMOVAL [11/2021 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  10. INSPECT STEERING PAD SWITCH ASSEMBLY 

    Refer to INSPECTION [11/2021 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE STEERING PAD SWITCH ASSEMBLY. Refer to  REMOVAL [11/2021 - ] 

    Result: 

    OK 

    See step  11

  11. INSPECT SPIRAL CABLE SUB-ASSEMBLY 

    Refer to INSPECTION [11/2021 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE SPIRAL CABLE SUB-ASSEMBLY. Refer to  REMOVAL [11/2021 - ] 

    Result: 

    OK 

    See step  12

  12. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - FORWARD RECOGNITION CAMERA) 
    1. Disconnect the M17 forward recognition camera connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      W/ POWER TILT AND POWER TELESCOPIC STEERING COLUMN SYSTEM

      Tester Connection Condition Specified Condition
      D144-6 (DIST) - M17-5 (LKSW) Always Below 1 Ω
      D144-6 (DIST) or M17-5 (LKSW) - Body ground Always 10 kΩ or higher
      W/O POWER TILT AND POWER TELESCOPIC STEERING COLUMN SYSTEM

      Tester Connection Condition Specified Condition
      D25-6 (DIST) - M17-5 (LKSW) Always Below 1 Ω
      D25-6 (DIST) or M17-5 (LKSW) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE FORWARD RECOGNITION CAMERA. Refer to  REMOVAL [11/2021 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

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