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Home › Toyota › 2004 › Tundra Base, Standard › Repair and Diagnosis › External Pages › Different car › Section 475 (Cruise Control System - Diagnostics) › Cruise Control System › Circuit Inspection › Control Switch Circuit (Cruise Control Switch) › Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2006 Toyota Tundra and 2005 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.

HINT:

In case of using the hand-held tester, start the inspection from step  1 and in case of not using the hand-held tester, start from step  2.

  1. Read value on hand-held tester. 

    PREPARATION: 

    1. Connect the hand-held tester to the DLC3.
    2. Turn the ignition switch to the ON position.
    3. According to the display on the tester, read the "DATA LIST".
    Fig 1: Identifying Ignition Switch Function
    G02643873Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    CCS (ECM): 

    IGNITION SWITCH FUNCTION

    Item Measurement Item/Display (Range) Normal Condition Diagnostic Note
    MAIN SW (MAIN) Main SW signal (Main CPU)/ON or OFF ON: Main SW ON (Pushed on)
    OFF: Main SW OFF (Pushed off)    		 -
    MAIN SW (SUB) Main SW signal (Sub CPU)/ON or OFF ON: Main SW ON (Pushed on)
    OFF: Main SW OFF (Pushed off)    		 -
    CANCEL SW CANCEL SW signal/ON or OFF ON: CANCEL SW ON
    OFF: CANCEL SW OFF    		 -
    SET/COAST SW SET/COAST SW signal/ON or OFF ON: SET/COAST SW ON
    OFF: SET/COAST OFF    		 -
    RES/ACC SW RES/ACC SW signal/ON or OFF ON: RES/ACC SW ON
    OFF: RES/ACC SW OFF    		 -

    OK: 

    When the cruise control main switch is operated, the normal conditions listed above are shown on the display. 

    RESULT: 

    RESULT REFERENCE

    OK A
    NG (All items are defective.) B
    NG (One to four items are defective.) C
    1. B : Go to step 2 
    2. C : Replace cruise control main switch. 
    3. A : Go to next step 

    Proceed to next circuit inspection shown in  PROBLEM SYMPTOMS TABLE   . 

  2. Check cruise control switch continuity. 

    PREPARATION: 

    1. Remove steering wheel center pad.
    2. Disconnect the cruise control switch connector.

    CHECK: 

    Measure the resistance according to the value(s) in the CRUISE CONTROL SWITCH CONTINUITY  .

    Fig 2: Checking Cruise Control Switch Continuity
    G02643874Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: 

    CRUISE CONTROL SWITCH CONTINUITY

    Switch condition Tester connection Specified condition
    Neutral 1 - 3 Below 1 Ω
    RES/+ 1 - 3 210 to 270Below 1 Ω
    SET/- 1 - 3 560 to 700Below 1 Ω
    CANCEL 1 - 3 1,380 to 1,700Below 1 Ω
    Main Switch OFF 1 - 3 10 kBelow 1 Ω or higher
    Main Switch ON 1 - 3 Below 1 Ω
    1. NG : Replace cruise control switch. 
    2. OK : Go to next step. 
  3. Check harness and connector (Cruise control switch - spiral cable sub-assy) 

    PREPARATION: 

    Disconnect the spiral cable connector.

    CHECK: 

    Measure the resistance according to the value(s) in CRUISE CONTROL SWITCH - SPIRAL CABLE SUB-ASSY  .

    Fig 3: Checking Harness And Connector (Cruise Control Switch - Spiral Cable Sub-Assy)
    G02643875Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: 

    CRUISE CONTROL SWITCH - SPIRAL CABLE SUB-ASSY

    Tester Connection Specification
    A-5 - B-3 Below 1 Ω
    A-4 - B-1 Below 1 Ω
    1. NG : Repair or replace harness or connector. 
    2. OK : Go to next step. 
  4. Inspect spiral cable sub-assy 

    PREPARATION: 

    Disconnect the spiral cable vehicle side connector.

    CHECK: 

    Measure the resistance according to the value(s) in the table below.

    Fig 4: Inspecting Spiral Cable Sub-Assy
    G02643876Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: 

    SPIRAL CABLE SUB-ASSY

    Tester Connection Condition Specified Condition
    A-5 - C16-5 Always Below 1 Ω
    A-4 - C16-4 Always Below 1 Ω
    1. NG : Replace spiral cable sub-assy 
    2. OK : Go to next step. 
  5. Check harness and connector (ECM - spiral cable sub-assy) 

    PREPARATION: 

    Disconnect the ECM connector.

    CHECK: 

    Measure the resistance according to the value(s) in ECM - SPIRAL CABLE SUB-ASSY  .

    Fig 5: Checking Harness And Connector (ECM - Spiral Cable Sub-Assy) (1 Of 2)
    G02643877Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 6: Checking Harness And Connector (ECM - Spiral Cable Sub-Assy) (2 Of 2)
    G02643878Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: 

    ECM - SPIRAL CABLE SUB-ASSY

    Tester Connection (Symbol) Condition Specification
    Spiral cable (C16-5) - CCS (E7-24) Always Below 1 Ω
    CCS (E4-2) - Body ground Always 10 kBelow 1 Ω or higher
    Spiral cable (C16-4) - Body ground Always Below 1 Ω
    1. NG : Repair or replace harness or connector. 
    2. OK : Replace ECM (See  HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE  ). 
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