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Inspection Procedure

  1. READ DATA LIST (CRUISE CONTROL MAIN SWITCH) 
    1. Check the DATA LIST for proper functioning of the cruise control main switch.

      ECM (Cruise control): 

      Fig 1: Reading Data List (Cruise Control Main Switch) Table
      G02955003Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: Display changes according to brake pedal operation described in  Fig 1  above. 

    1. NG: Go to step   2 
    2. OK: REPLACE ECM (See  REPLACEMENT  ) 
  2. INSPECT CRUISE CONTROL MAIN SWITCH ASSY 
    1. Measure the resistance of the switch.

      Standard: 

      CRUISE CONTROL MAIN SWITCH ASSY RESISTANCE

      Tester Connection Switch Condition Specified Condition
      4 (ECC) - 5 (CCS) RES/ACC 235 to 245 ohms
      4 (ECC) - 5 (CCS) SET/COAST 617 to 643 ohms
      4 (ECC) - 5 (CCS) CANCEL 1,509 to 1,572 ohms
      4 (ECC) - 5 (CCS) Main switch OFF 10 k ohms or higher
      4 (ECC) - 5 (CCS) Main switch ON Below 1 ohms
      Fig 2: Inspecting Cruise Control Main Switch Assy
      G02955004Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPLACE CRUISE CONTROL MAIN SWITCH ASSY (See  REPLACEMENT  ) 
    2. OK: Go to next step. 
  3. INSPECT SPIRAL CABLE SUB-ASSY 
    1. Measure the resistance of the spiral cable.

      Standard: 

      SPIRAL CABLE SUB-ASSY RESISTANCE

      Tester Connection Specified Condition
      C10-5 (CCS) - A-5 (CCS) Below 1 ohms
      C10-4 (ECC) - A-4 (ECC) Below 1 ohms
      Fig 3: Inspecting Spiral Cable Sub-Assy
      G02955005Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPLACE SPIRAL CABLE SUB-ASSY (See  REPLACEMENT  ) 
    2. OK: Go to next step. 
  4. CHECK WIRE HARNESS (SPIRAL CABLE SUB-ASSY - ECM AND BODY GROUND) 
    1. Disconnect the E5 ECM connector.
    2. Disconnect the C10 spiral cable connector.
    3. Measure the resistance of the wire harness side connectors.

      Standard: 

      SPIRAL CABLE SUB-ASSY - ECM AND BODY GROUND RESISTANCE

      Tester Connection Specified Condition
      E5-31 (CCS) - C10-5 (CCS) Below 1 ohms
      E5-31 (CCS) - Body ground 10 k ohms or higher
      C10-5 (CCS) - Body ground 10 k ohms or higher
      C10-4 (ECC) - Body ground Below 1 ohms
      Fig 4: Checking Wire Harness (Spiral Cable Sub-Assy - ECM & Body Ground)
      G02955006Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
    2. OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE (See  PROBLEM SYMPTOMS TABLE   ) 
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