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Home >> Toyota >> 2005 >> Matrix Base, 4WD >> Repair and Diagnosis >> Accessories & Equipment >> Cruise Control Systems >> Cruise Control System (W/O ETCS-I) - Diagnostics >> Cruise Control Switch Circuit >> Inspection Procedure
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Inspection Procedure

  1. INPUT SIGNAL CHECK 
    1. See input signal check on PRE-CHECK .
    2. Check the indicator light operation when each of the SET/ COAST, RESUME/ACCEL and CANCEL is turned ON.
      Fig 1: Input Signal And Indicator Light Blinking Pattern Chart
      G02679607Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go To Next Step 

    SET/COAST, RESUME/ACCEL switch: 

    The signals shown in the table on the left should be output when each switch is ON. The signal should disappear when the switch is turned OFF. 

    CANCEL switch: 

    The indicator light goes off when the cancel switch is turned ON. 

    1. OK: WAIT AND SEE 

    NG: Go To Next Step 

  2. INSPECT TERMINAL VOLTAGE (CCS) 
    1. Remove the cruise control ECU assy with the connector being connected.
    2. Turn the ignition switch to ON.
    3. Measure the voltage between terminals 11 (CCS) of the cruise control ECU assy connector and the body ground when each control switch is operated.

    OK: 

    TERMINALS CCS AND BODY GROUND VOLTAGE SPECIFICATIONS

    Switch Position Voltage
    Neutral 10-16V
    CRUISE ON-OFF RES/ACC Below 0.5V
    RES/ACC 2.3 -4.5V
    SET/COAST 4.5-8.1 V
    CANCEL 6.6-11.4V
    1. NG: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN (  PROBLEM SYMPTOMS TABLE  ) 
    Fig 2: Identifying Terminals (CCS) Of Cruise Control ECU Assy Connector
    G02679608Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go To Next Step 

  3. INSPECT CRUISE CONTROL MAIN SWITCH ASSY 
    Fig 3: Inspecting Cruise Control Main Switch Assy
    G02679609Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Remove the steering wheel center pad (See OVERHAUL ).
    2. Disconnect the control switch assy connector.
    3. Check continuity between terminals 2 (CCS) and 3 (ECC) of control switch assy connector when cruise control main switch assy is held ON and OFF.

    OK: 

    CRUISE CONTROL MAIN SWITCH ASSY TERMINAL CONTINUITY SPECIFICATIONS

    Switch Position Resistance
    Neutral Infiniti (No continuity)
    CRUISE ON-OFF 0 Ω (Continuity)
    RES/ACC 210-270Ω
    SET/COAST 560 -700 Ω.
    CANCEL 1, 380-1, 700 Ω
    1. NG: REPLACE CRUISE CONTROL MAIN SWITCH ASSY 

    OK: Go To Next Step 

  4. CHECK HARNESS AND CONNECTOR (BETWEEN CRUISE CONTROL MAIN SWITCH ASSY AND BODY GROUND) 
    1. Check for open and short circuit in harness and connector between cruise control main switch assy and body ground (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE ).
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go To Next Step 

  5. CHECK HARNESS AND CONNECTOR (BETWEEN CRUISE CONTROL ECU ASSY AND CRUISE CONTROL MAIN SWITCH) 
    1. Check for open and short circuit in harness and connector between cruise control ECU assy and cruise control main switch assy (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE ).
    1. NG: REPAIR OR REPLACE HARNESS OR" CONNECTOR 

    OK: Go To Next Step 

  6. INPUT SIGNAL CHECK (See step 1) 
    1. OK: WAIT AND SEE 

    NG: Go To Next Step 

    CHECK AND REPLACE CRUISE CONTROL ECU ASSY (See  ELECTRONIC CIRCUIT INSPECTION PROCEDURE  ) 

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