LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2009 >> M45 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 51 (Cruise Control System) >> Cruise Control System >> Cruise Control Switch Circuit >> Inspection Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Inspection Procedure

WARNING: This page is about a different car, the 2008 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.
  1. READ VALUE OF TECHSTREAM (CRUISE CONTROL MAIN SWITCH) 
    1. Using the Techstream, read the Data List.
      Fig 1: Checking Cruise Control Main Switch
      G05298637Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Techstream 

      DATA LIST - CRUISE CONTROL

      Tester Display Measurement Item / Range Normal Condition Diagnostic Note
      CCS Main SW M-CPU Main switch signal (Main CPU) / ON or OFF ON: Main switch ON (Pushed on)
      OFF: Main switch OFF (Pushed off)      		 -
      Cancel Switch CANCEL switch signal / ON or OFF ON: CANCEL switch ON
      OFF: CANCEL switch OFF      		 -
      SET/COAST Switch SET / COAST switch signal / ON or OFF ON: SET / COAST switch ON
      OFF: SET / COAST switch OFF      		 -
      RES/ACC Switch RES / ACC switch signal / ON or OFF ON: RES / ACC switch ON
      OFF: RES / ACC switch OFF      		 -

      OK: When cruise control main switch operation is performed, the results are the same as above. 

      NG: Go to step 2 

      OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  PROBLEM SYMPTOMS TABLE  

  2. INSPECT CRUISE CONTROL MAIN SWITCH 
    Fig 2: Identifying Cruise Control Main Switch
    G05160709Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Remove the cruise control main switch (see REMOVAL  ).
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      CRUISE CONTROL MAIN SWITCH

      Tester Connection Switch Condition Specified Condition
      1 - 3 Neutral 10 kΩ or higher
      RES/ACC 235 to 245 Ω
      SET/COAST 620 to 640 Ω
      CANCEL 1510 to 1570 Ω
      Main Switch OFF 10 kΩ or higher
      Main Switch ON Below 1 Ω

    NG: REPLACE CRUISE CONTROL MAIN SWITCH  (see REMOVAL  )

    OK: Go to Next Step 

  3. INSPECT SPIRAL CABLE 
    1. If there are any defects as follows, replace the spiral cable with a new one: Scratches, cracks, dents or chips on the connector or the spiral cable.
    2. Check spiral cable.
      1. Set the spiral cable to the center position (see INSPECTION ).
      2. After setting the spiral cable to the center position, rotate the spiral cable 2.5 times clockwise, and measure the resistance according to the value(s) in the table below. Then rotate the spiral cable 5 times counterclockwise, and measure the resistance according to the value(s) in the table below.

        Standard resistance 

        SPIRAL CABLE (1 OF 2)

        Tester Connection Condition Specified Condition
        z2-4 - J45-1 (CCS) Always Below 1 Ω
        z2-3 - J45-2 (ECC)
      3. After setting the spiral cable to the center position, rotate the spiral cable 2.5 times clockwise. Then while rotating the spiral cable 5 times counterclockwise, measure the resistance according to the value(s) in the table below.

        Standard resistance 

        SPIRAL CABLE (2 OF 2)

        Tester Connection Condition Specified Condition
        z2-4 - J45-1 (CCS) Always Below 1 Ω
        z2-3 - J45-2 (ECC)
        Fig 3: Identifying Spiral Cable Connector
        G05160710Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        NOTE: As the spiral cable may break, do not rotate the spiral cable more than the specified amount.

    NG: REPLACE SPIRAL CABLE  (See REMOVAL )

    OK: Go to Next Step 

  4. INSPECT CRUISE CONTROL SWITCH WIRE 
    1. Remove the cruise control switch wire.
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      CRUISE CONTROL SWITCH WIRE

      Tester Connection Condition Specified Condition
      Z2-4 - 3 Always Below 1 Ω
      z2-3 - 1
      Fig 4: Inspecting Cruise Control Switch Wire
      G05160711Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE CRUISE CONTROL SWITCH WIRE 

    OK: Go to Next Step 

  5. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE - ECM AND BODY GROUND) 
    1. Disconnect the J45 spiral cable connector.
    2. Disconnect the A24 ECM connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      SPIRAL CABLE - ECM AND BODY GROUND

      Tester Connection Condition Specified Condition
      J45-1 (CCS) - A24-45 (CCS) Always Below 1 Ω
      J45-1 (CCS) - Body ground Always 10 kΩ or higher
      J45-2 (ECC) - Body ground Always Below 1 Ω

      Result 

      RESULT REFERENCE

      Result Proceed to
      NG A
      OK (for 1GR-FE) B
      OK (for 2UZ-FE) C
      OK (for 3UR-FE) D
      Fig 5: Identifying J45 Spiral Cable And A24 ECM Connector
      G05160712Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    B: REPLACE ECM  (See REMOVAL (1 GR-FE))

    C: REPLACE ECM  (See REMOVAL (2UZ-FE))

    D: REPLACE ECM  (See REMOVAL (3UR-FE))

    A: REPAIR OR REPLACE HARNESS OR CONNECTOR 

scientia non olet · About LEMON Manuals