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Home >> Mitsubishi >> 2005 >> Lancer ES, Automatic >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Chassis Electrical -- Except Evolution >> Combination Meter Assembly >> Equipment Diagnosis >> Symptom Procedures >> INSPECTION PROCEDURE 3: Tachometer does not Work. >> Diagnosis

INSPECTION PROCEDURE 3: Tachometer does not Work.: Diagnosis

Required Special Tools: 

  1. STEP 1. Check with other meter. 

    Check to see that the speedometer, fuel gauge and water thermometer operate normally.

    Q: Do all other meters operate? 

    1. YES < other meters all operate>.:  Go to Step 2.
    2. NO < one of the meters do not operate>.:  Refer to INSPECTION PROCEDURE 5  .
  2. STEP 2. Using scan tool MB991958, read the diagnostic trouble code. 
    CAUTION: To prevent damage to scan tool MB991502 or MB991958, always turn the ignition switch to "LOCK" (OFF) position before connecting or disconnecting scan tool.
    1. Connect scan tool MB991958 to the data link connector.
    2. Turn the ignition switch to "ON" position.
    3. Read the MFI system diagnostic trouble code.

    Q: Is DTC output to the MFI system? 

    1. YES:  Refer to MULTIPORT FUEL INJECTION (MFI) 2.0L ENGINE - LANCER or MULTIPORT FUEL INJECTION (MFI) 2.4L ENGINE - LANCER RALLIART .
    2. NO:  Go to Step 3.
      Fig 1: Connecting Scan Tool Mb991958 To Data Link Connector
      G02415456Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
  3. STEP 3. Check combination meter connector C-01 and ECM connector C-117 <2.0L-M/T>, C-137 <2.4L-M/T> or PCM connector C-118 <2.4L-A/T>, C-138 <2.4L-A/T> for damage. 
    Fig 2: Identifying C-01 Terminal Connectors
    G02415457Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
    Fig 3: Identifying C-117 Terminal Connectors
    G02415458Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

    Q: Are combination meter connector C-01 and ECM connector C-117 <2.0L-M/T>, C-137 <2.4L-M/T> or PCM connector C-118 <2.4L-A/T>, C-138 <2.4L-A/T> in good condition? 

    1. YES:  Go to Step 4.
    2. NO:  Repair or replace the connector. Refer to HARNESS CONNECTOR INSPECTION . The tachometer should work normally.
      Fig 4: Identifying C-118 Terminal Connectors
      G02415459Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
  4. STEP 4. Check the wiring harness between combination meter connector C-01 (terminal 11) and ECM connector C-117 <2.0L-M/T> (terminal 58), C-137 <2.4L-M/T> (terminal 87) or PCM connector C-118 <2.0L-A/T> (terminal 43), C-138 <2.4L-A/T> (terminal 87.) 
    Fig 5: Identifying C-01 Terminal Connectors
    G02415460Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
    Fig 6: Identifying C-117 Terminal Connectors
    G02415461Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

    Q: Are the wiring harness between combination meter connector C-01 (terminal 11) and ECM connector C-117 <2.0L-M/T> (terminal 58), C-137 <2.4L-M/T> (terminal 87) or PCM connector C-118 <2.0L-A/T> (terminal 43), C-138 <2.4L-A/T> (terminal 87) in good condition? 

    1. YES:  Go to Step 5.
    2. NO:  Repair the wiring harness. The tachometer should work normally.
      Fig 7: Identifying C-118 Terminal Connectors
      G02415462Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
  5. STEP 5. Replace the combination meter and check. 

    Q: Does the tachometer operate? 

    1. YES:  There is no action to be taken.
    2. NO:  Replace the PCM < A/T > or ECM < M/T >. The tachometer should work normally.
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