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Home >> Mitsubishi >> 2005 >> Montero >> Repair and Diagnosis >> External Pages >> Different car >> Section 34 (Traction Control/Active Skid Control System) >> M-ASTC Diagnosis >> Symptom Procedures >> INSPECTION PROCEDURE 3: The Active skid control system operation indicator light/Active traction control system operation indicator light remains illuminated after the engine is started. >> Diagnosis
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INSPECTION PROCEDURE 3: The Active skid control system operation indicator light/Active traction control system operation indicator light remains illuminated after the engine is started.: Diagnosis

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

Required Special Tool: 

  1. STEP 1. Check the Active skid control system operation indicator light/Active traction control system operation indicator light drive circuit at M-ASTC-ECU connector E-121 terminal. 
    1. Disconnect M-ASTC-ECU connector E-121.
    2. Turn the ignition switch to the "ON" position.

    Q:Does the indicator light turn off? 

    YES :  Replace the M-ASTC-ECU and then go to  Step 3.

    NO :  Go to  Step 2.

    Fig 1: Identifying M-ASTC-ECU Connector E-121
    G04712458Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
  2. STEP 2. Check the harness wires between combination meter connector D-03 terminal 51 and M-ASTC-ECU connector E-121 terminal 82. 
    NOTE: After inspecting combination meter connector combination meter connector D-03, intermediate connector E-122 and M-ASTC-ECU connector E-121, inspect the wire. If combination meter connector D-03, intermediate connector E-122 and M-ASTC-ECU connector E-121 are damaged, repair or replace them. Refer to HARNESS CONNECTOR INSPECTION . Then go to  Step 3.

    Q:Is the harness wire between combination meter connector D-03 terminal 51 and M-ASTC-ECU connector E-121 terminal 82 damaged? 

    YES :  Repair it and then go to  Step 3.

    NO :  Replace the combination meter (printed circuit board) and then go to  Step 3.

    Fig 2: Identifying Combination Meter Connector D-03
    G04712459Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
    Fig 3: Identifying M-ASTC-ECU Connector E-121
    G04712460Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
    Fig 4: Identifying Intermediate Connector E-122
    G04712461Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
  3. STEP 3. Retest the system. 

    Q:Does the Active skid control system operation indicator light/Active traction control system operation indicator light turn off 3 seconds after start-up? 

    YES :  The procedure is complete.

    NO :  Return to  Step 1.