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Home >> Mitsubishi >> 2013 >> Lancer SE >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 36 (Hands Free Module - Lancer Evolution) >> Symptom Procedures >> Inspection Procedure 1: Check The Hands Free Module Power Supply Circuit >> Diagnosis
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Inspection Procedure 1: Check The Hands Free Module Power Supply Circuit: Diagnosis

WARNING: This page is about a different variant/trim than selected.

Required Special Tools: 

  1. STEP 1. Check hands free module connector C-11 for loose, corroded or damaged terminals, or terminals pushed back in the connector. 

    Q: IS hands free module connector C-11 in good condition? 

  2. STEP 2. Check the ground circuit to the hands free module. Measure the resistance at hands free module connector C-11. 
    1. Disconnect hands free module connector C-11, and measure at the wiring harness side.
    2. Measure resistance between terminal 17 and ground.

      OK: The resistance should be 2 ohms or less. 

      Fig 1: Measuring Resistance Between Terminal 17 & Ground
      G07667357Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

    Q: Is the measured resistance 2 ohms or less? 

    • YES:  Go to  Step 4.
    • NO:  Go to Step 3.
  3. STEP 3. Check the wiring harness between hands free module connector C-11 (terminal 17) and ground. 
    • Check the body ground wires for open circuit.

    Q: Is the wiring harness between hands free module connector C-11 (terminal 17) and ground in good condition? 

    • YES:  The trouble can be an intermittent malfunction (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTIONS ).
    • NO:  The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary.
  4. STEP 4. Check the power supply circuit to the hands free module. Measure the voltage at hands free module connector C-11. 
    1. Disconnect hands free module connector C-11, and measure the voltage available at the wiring harness side of the connector.
    2. Measure the voltage between terminal 1 and ground.

      OK: The voltage should measure approximately 12 volts (battery positive voltage). 

      Fig 2: Measuring Voltage Between Terminal 1 & Ground
      G07667358Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

    Q: Is the measured voltage approximately 12 volts (battery positive voltage)? 

    • YES:  Go to  Step 6.
    • NO:  Go to Step 5.
  5. STEP 5. Check the wiring harness between hands free module connector C-11 (terminal 1) and fusible link (36). 
    • Check the power supply line for open circuit and short circuit.
    NOTE: Also check ETACS-ECU connector C-307, C-317 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If ETACS-ECU connector C-307, C-317 is damaged, repair or replace the connector as described in HARNESS CONNECTOR INSPECTION .

    Q: Is the wiring harness between hands free module connector C-11 (terminal 1) and fusible link (36) in good condition? 

    • YES:  The trouble can be an intermittent malfunction (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTIONS ).
    • NO:  The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary.
  6. STEP 6. Check the power supply circuit to the hands free module. Measure the voltage at hands free module connector C-11. 
    1. Disconnect hands free module connector C-11, and measure the voltage available at the wiring harness side of the connector.
    2. Turn the ignition switch to "ACC" position.
    3. Measure the voltage between terminal 15 and ground.

      OK: 1 voltage or less. 

      Fig 3: Measuring Voltage Between Terminal 15 & Ground
      G07667359Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

    Q: Is the measured voltage approximately 12 volts (battery positive voltage)? 

    • YES:  Replace the hands free module.
    • NO:  Go to Step 7.
  7. STEP 7. Check radio and CD player connector C-109 < Vehicles with radio and CD player > or multivision display connector C-09 < Vehicles with MMCS > for loose, corroded or damaged terminals, or terminals pushed back in the connector. 

    Q: Is radio and CD player connector C-109 < Vehicles with radio and CD player > or multivision display connector C-09 < Vehicles with MMCS > in good condition? 

  8. STEP 8. Check the wiring harness between hands free module connector C-11 terminal (terminal 15) and radio and CD player connector C-109 terminal (terminal 17) < vehicles with radio and CD player > or multivision display connector C-09 terminal (terminal 72) < vehicles with MMCS >. 
    • Check the signal line for open circuit and short circuit.
    NOTE: Also check intermediate connector C-110 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connector C-110 is damaged, repair or replace the connector as described in HARNESS CONNECTOR INSPECTION . < Vehicles with MMCS >

    Q: Is the check result normal? 

    • YES:  Replace the radio and CD player or multivision display
    • NO:  The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary.
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