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Home >> Mitsubishi >> 2014 >> Lancer ES Sportback >> Repair and Diagnosis >> External Pages >> Different car >> Section 41 (Electronic Time & Alarm Control System (ETACS) - With Diagnostics) >> Data List Reference Table >> Input Signal Procedures >> Inspection Procedure 16: The LDW switch signal is not received >> Diagnosis

Inspection Procedure 16: The LDW switch signal is not received: Diagnosis

WARNING: This page is about a different car, the 2014 Mitsubishi Outlander. However, it is still accessible from the selected car via links, so may be relevant.

Required Special Tools: 

  1. STEP 1. Check the LDW switch. 

    Check the LDW switch. Refer to LDW SWITCH .

    Q: Is the check result normal? 

    1. YES:  Go to Step 2.
    2. NO:  Replace the LDW switch.
  2. STEP 2. Resistance measurement at LDW switch connector (ground terminal) 
    1. Disconnect the connector, and measure at the wiring harness side.
    2. Measure the resistance between the LDW switch connector (ground terminal) and ground.

      OK: The resistance should be 2 ohms or less 

    Q: Is the check result normal? 

    1. YES:  Go to  Step 4.
    2. NO:  Go to Step 3.
  3. STEP 3. Check of open circuit in ground line between LDW switch connector and ground 

    Q: Is the check result normal? 

    1. YES:  Intermittent malfunction is suspected (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION ).
    2. NO:  Repair the connector(s) or wiring harness.
  4. STEP 4. Check of short to ground, and open circuit in LDWS line between LDW switch connector and ETACS-ECU connector 

    Q: Is the check result normal? 

    1. YES:  Go to Step 5.
    2. NO:  Repair the connector(s) or wiring harness.
  5. STEP 5. Using scan tool (M.U.T.-III), check data list. 
    CAUTION: To prevent damage to scan tool (M.U.T.-III), always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool (M.U.T.-III).
    1. Connect scan tool (M.U.T.-III). Refer to "HOW TO CONNECT SCAN TOOL (M.U.T.-III) ."
    2. Check the ETACS-ECU service data.
      • When the LDW switch is pressed.
        Item No. Item name Normal condition
        Item 405 LDW switch ON
      • When the LDW switch is not pressed.
        Item No. Item name Normal condition
        Item 405 LDW switch OFF

        OK: Normal condition is displayed. 

    Q: Is the check result normal? 

    1. YES:  The trouble can be an intermittent malfunction (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION ).
    2. NO:  Replace the ETACS-ECU.
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