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Home >> Toyota >> 2004 >> Highlander Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 473 (Cruise Control System - Diagnostics) >> Cruise Control System (April, 2003) >> DTC 14: Actuator Mechanical Malfunction >> Circuit Description >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2004 Toyota Corolla and 2003 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.
  1. INSPECT CRUISE CONTROL ACTUATOR ASSY 
    1. Inspect the cruise control actuator arm locking operation.
      1. Turn the ignition switch to OFF.
      2. Disconnect the cruise control actuator assy connector.
      3. Connect the positive (+) lead from the battery to the terminal 3 (L) of cruise control actuator assy and the negative (-) lead to terminal 4 (GND).
        NOTE: Do not connect the high tension cables to the wrong battery terminal. You will damage the cruise control actuator assy.
      4. Move the control plate by hand.

        OK: 

        Control plate does not move. 

        Fig 1: Identifying Connector Terminal
        G02861208Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Inspect the cruise control actuator assy operation.
      1. Turn the ignition switch to OFF.
      2. Disconnect the cruise control actuator assy connector.
      3. Connect the positive (+) lead from the battery to terminals 1 (MO) and 3 (L) of cruise control actuator assy, connect the negative (-) lead to terminals 2 (MC) and 4 (GND) of cruise control actuator assy.

        OK: 

        Control arm moves to full open side. 

        Fig 2: Connecting Positive (+) Lead From Battery To Terminals 1 (MO) And 3 (L) Of Cruise Control Actuator Assy
        G02861209Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      4. Connect the positive (+) lead from the battery to terminals 2 (MC) and 3 (L) of cruise control actuator assy, connect the negative (-) lead to terminals 1 (MO) and 4 (GND) of cruise control actuator assy.

        OK: 

        Control arm moves to full close side. 

        Fig 3: Connecting Positive (+) Lead From Battery To Terminals 2 (MC) And 3 (L) Of Cruise Control Actuator Assy
        G02861210Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPLACE CRUISE CONTROL ACTUATOR ASSY 
    2. OK: GO TO NEXT STEP. 
  2. CHECK HARNESS AND CONNECTOR (BETWEEN CRUISE CONTROL ECU ASSY AND CRUISE CONTROL ACTUATOR ASSY) 
    1. Check for open and short circuit in harness and connector between cruise control ECU assy and cruise control actuator assy (actuator motor) (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE ).
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
    2. OK: CHECK AND REPLACE CRUISE CONTROL ECU ASSY (See  ELECTRONIC CIRCUIT INSPECTION PROCEDURE  ) 
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