LEMON Manuals: Even more car manuals for everyone
Home >> Mitsubishi >> 2007 >> Galant DE >> Repair and Diagnosis >> Accessories & Equipment >> Steering Column Switches >> Chassis Electrical >> MMCS >> Symptom Procedures >> INSPECTION PROCEDURE 3: Check the power supply circuit system of multi-center display >> Diagnosis

INSPECTION PROCEDURE 3: Check the power supply circuit system of multi-center display: Diagnosis

Required Special Tools: 

  1. STEP 1. Check multi-center display connector C-32 for loose, corroded or damaged terminals, or terminals pushed back in the connector. 

    Q: Is multi-center display connector C-32 in good condition? 

    YES:  Go to Step 2.

    NO:  Repair the damaged parts. Then, check that the power supply circuit of multi-center display is normal.

    Fig 1: Locating Multi-Center Display Connector C-32
    G05105467Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
  2. STEP 2. Check the battery power supply circuit to the multi-center display. Measure the voltage at multi-center display connector C-32. 
    1. Disconnect multi-center display connector C-32 and measure the voltage available at the wiring harness side of the connector.
      Fig 2: Locating Multi-Center Display Connector C-32
      G05105467Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
    2. Measure the voltage between terminal 26 and ground.
      • The voltage should measure approximately 12 volts (battery positive voltage).

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

    YES:  Go to Step  4.

    NO:  Go to Step 3.

    Fig 3: Measuring Voltage Between Terminal 26 And Ground
    G05105469Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
  3. STEP 3. Check the wiring harness between multi-center display connector C-32 (terminal 26) and the battery. 
    Fig 4: Locating Multi-Center Display Connector C-32
    G05105467Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
    NOTE: Also check joint connector C-01 and intermediate connector C-29 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If joint connector C-01 and intermediate connector C-29 are damaged, repair or replace the damaged component(s) as described in HARNESS CONNECTOR INSPECTION .

    Q: Is the wiring harness between multi-center display C-32 connector (terminal 26) and battery in good condition? 

    YES:  No action is necessary and testing is complete.

    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. Check that the power supply circuit of multi-center display is normal.

    Fig 5: Locating Joint Connector C-01 And Intermediate Connector C-29
    G05105332Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
  4. STEP 4. Check the battery power supply circuit to the multi-center display. Measure the voltage at multi-center display connector C-32. 
    1. Disconnect multi-center display connector C-32 and measure the voltage available at the wiring harness side of the connector.
    2. Turn the ignition switch to the "ACC" position.
      Fig 6: Locating Multi-Center Display Connector C-32
      G05105467Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
    3. Measure the voltage between terminal 25 and ground.
      • The voltage should measure approximately 12 volts (battery positive voltage).

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

    YES:  Go to Step  6.

    NO:  Go to Step 5.

    Fig 7: Measuring Voltage Between Terminal 25 And Ground
    G05105473Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
  5. STEP 5. Check the wiring harness between multi-center display connector C-32 (terminal 25) and ignition switch (ACC). 
    Fig 8: Locating Multi-Center Display Connector C-32
    G05105467Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
    NOTE: Also check joint connector C-03 and intermediate connector C-29 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If joint connector C-03 and intermediate connector C-29 are damaged, repair or replace the damaged component(s) as described in HARNESS CONNECTOR INSPECTION .

    Q: Is the wiring harness between multi-center display C-32 (terminal 25) and ignition switch (ACC) in good condition? 

    YES:  No action is necessary and testing is complete.

    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. Check that the power supply circuit of multi-center display is normal.

    Fig 9: Locating Joint Connector C-03 And Intermediate Connector C-29
    G05105405Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
  6. STEP 6. Check the battery power supply circuit to the multi-center display. Measure the voltage at multi-center display connector C-32. 
    1. Disconnect multi-center display connector C-32 and measure the voltage available at the wiring harness side of the connector.
    2. Turn the ignition switch to the "ON" position.
      Fig 10: Locating Multi-Center Display Connector C-32
      G05105467Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
    3. Measure the voltage between terminal 36 and ground.
      • The voltage should measure approximately 12 volts (battery positive voltage).

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

    YES:  Go to Step  8.

    NO:  Go to Step 7.

    Fig 11: Measuring Voltage Between Terminal 36 And Ground
    G05105477Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
  7. STEP 7. Check the wiring harness between multi-center display connector C-32 (terminal 36) and ignition switch (IG1). 
    Fig 12: Locating Multi-Center Display Connector C-32
    G05105467Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
    NOTE: Also check junction block connector C-211, C-215 and joint connector C-03 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If junction block connector C-211, C-215 and joint connector C-03 are damaged, repair or replace the damaged component(s) as described in HARNESS CONNECTOR INSPECTION .

    Q: Is the wiring harness between multi-center display C-32 (terminal 36) and ignition switch (IG1) in good condition? 

    Fig 13: Identifying C-03 Connector Terminals
    G04256988Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

    YES:  No action is necessary and testing is complete.

    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. Check that the power supply circuit of multi-center display is normal.

    Fig 14: Identifying Connector C-211 And C-215 Terminals
    G04256293Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
  8. STEP 8. Check the ground circuit to the multi-center display. Measure the resistance at multi-center display connector C-32. 
    1. Disconnect multi-center display connector C-32 and measure the resistance available at the wiring harness side of the connector.
      Fig 15: Locating Multi-Center Display Connector C-32
      G05105467Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
    2. Measure the resistance value between terminal 28 and ground.
      • The resistance should be 2 ohms or less.

    Q: Is the measured resistance 2 ohms or less? 

    YES:  Go to Step  10.

    NO:  Go to Step 9.

    Fig 16: Measuring Resistance Value Between Terminal 28 And Ground
    G05105482Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
  9. STEP 9. Check the wiring harness between multi-center display connector C-32 (terminal 28) and ground. 
    Fig 17: Locating Multi-Center Display Connector C-32
    G05105467Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
    NOTE: Also check joint connector C-03 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If joint connector C-03 is damaged, repair or replace the damaged component(s) as described in HARNESS CONNECTOR INSPECTION .

    Q: Is the wiring harness between multi-center display connector C-32 (terminal 28) and ground in good condition? 

    YES:  No action is necessary and testing is complete.

    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. Check that the power supply circuit of multi-center display is normal.

    Fig 18: Identifying C-03 Connector Terminals
    G04256988Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
  10. STEP 10. Temporarily replace the multi-center display, and check that the screen is displayed to the multi-center display. 

    Q: When the multi-center display is temporarily replaced, is the screen displayed to the multi-center display? 

    YES:  Replace the multi-center display. Check that the power supply circuit of multi-center display is normal.

    NO:  Return to Step  1.

scientia non olet · About LEMON Manuals