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HOMESERVICE MANUALSLEXUS2005ES 330REPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTCRUISE CONTROL SYSTEMSCRUISE CONTROL SYSTEM - DIAGNOSTICSCRUISE CONTROL SWITCH CIRCUITINSPECTION PROCEDURE
2005 Lexus ES 330

Inspection Procedure

2005 Lexus ES 330SECTION Inspection Procedure
  1. INSPECT CRUISE CONTROL MAIN SWITCH ASSY 
    Fig 1: Inspecting Cruise Control Main Switch Assy
    G02937394Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Turn the ignition switch off.
    2. Disconnect the cruise control main switch connector.
    3. Measure the resistance according to the value (s) in the table below.

    Standard: 

    TESTER CONNECTION AND SPECIFIC CONDITION

    Tester connection Switch condition Specification
    4-5 RES/+ 235 to 245Ω
    4-5 SET/- 617 to 643Ω
    4-5 CANCEL 1,509 to 1,571Ω
    4-5 Main Switch OFF 10 kΩ or higher
    4-5 Main Switch ON Below 1Ω

    NG: REPLACE CRUISE CONTROL MAIN SWITCH ASSY (SEE  REPLACEMENT  ) 

    OK: Go To Next Step. 

  2. INSPECT SPIRAL CABLE SUB-ASSY 
    1. Disconnect the ECM side spiral cable connector.
    2. Measure the resistance according to the value (s) in the table below.

    Standard: 

    TESTER CONNECTION AND SPECIFIC CONDITION

    Tester connection Condition Specification
    Terminal 5 (CCS) main switch side - CCS (C10-5) Always Below 1Ω
    Terminal 4 (ECC) main switch side - ECC (C10-4) Always Below 1Ω
    Fig 2: Inspecting Spiral Cable Sub-Assy
    G02937395Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE SPIRAL CABLE SUB-ASSY (SEE  SPIRAL CABLE SUB-ASSY  ) 

    OK: Go To Next Step. 

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

    Standard: 

    TESTER CONNECTION AND SPECIFIC CONDITION

    Tester connection Condition Specification
    ECC (C10 -4) -Body ground Always Below 1 Ω
    Fig 3: Checking Harness And Connector (Spiral Cable Sub-Assy - Body Ground)
    G02937396Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (SPIRAL CABLE SUB-ASSY -BODY GROUND) 

    OK: Go To Next Step. 

  4. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSY - ECM) 
  1. Disconnect the E7 connector of the ECM.
  2. Measure the resistance according to the value (s) in the table below.

Standard: 

TESTER CONNECTION AND SPECIFIC CONDITIONS

Tester connection Condition Specification
CCS (E7 - 24) -CCS (C10-5) Always Below 1Ω
CCS (E7 - 24) -Body ground Always 10 kΩ or higher
Fig 4: Identifying ECM Connector E7 Terminal CCS
G02937397Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.