INSPECTION PROCEDURE 4: Fuel Gauge does not Work.: Diagnosis

Required Special Tool: 

MB991223: Harness Set

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 6  .
2. STEP 2. Check the fuel level sensor. 

   Check to see if the fuel gauge is normal. Refer to TACHOMETER CHECK  .

   Q: Is the fuel level sensor normal? 

   1. YES:  Go to Step 3.
   2. NO:  Replace the fuel level sensor. The fuel gauge should work normally.
3. STEP 3. Measure at fuel level sensor connector D-10 in order to the ground circuit to the fuel level sensor. 
   1. Disconnect fuel level sensor connector D-10, and measure at the wiring harness side.
      Fig 1: Identifying D-10 Terminal Connectors

      Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
   2. Measure the resistance value between terminal 2 and ground.
      • The measured value should be 2 ohm or less.

   Q: Does the measured resistance value correspond with this range? 

   1. YES:  Go to  Step 6.
   2. NO:  Go to Step 4.
      Fig 2: Measuring Resistance Value Between Terminal 2 And Ground

      Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
4. STEP 4. Check fuel level sensor connector D-10 for damage. 

   Q: Is fuel level sensor connector D-10 in good condition? 

   1. YES:  Go to  Step 6.
   2. NO:  Repair or replace the connector. Refer to HARNESS CONNECTOR INSPECTION . The fuel gauge should work normally.
      Fig 3: Identifying D-10 Terminal Connectors

      Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
5. STEP 5. Check the wiring harness between fuel level sensor connector D-10 (terminal 2) and ground. 
   Fig 4: Identifying D-10 Terminal Connectors

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
   NOTE: Also check intermediate connector D-14. If intermediate connector D-14 is damaged, repair or replace the connector as described in HARNESS CONNECTOR INSPECTION .

   Q: Is the wiring harness between fuel level sensor connector D-10 (terminal 2) and ground in good condition? 

   1. YES:  There is no action to be taken.
   2. NO:  Repair the wiring harness. The fuel gauge should work normally.
      Fig 5: Identifying D-14 Terminal Connectors

      Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
6. STEP 6. Check fuel level sensor connector D-10 and combination meter connector C-02 for damage. 

   Q: Are fuel level sensor connector D-10 and combination meter connector C-02 in good condition? 

   1. YES:  Go to Step 7.
   2. NO:  Repair or replace the connector. Refer to HARNESS CONNECTOR INSPECTION . The fuel gauge should work normally.
      Fig 6: Identifying C-02 Terminal Connectors

      Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
      Fig 7: Identifying D-10 Terminal Connectors

      Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
7. STEP 7. Check the wiring harness between fuel level sensor connector D-10 (terminal 1) and combination meter connector C-02 (terminal 51.) 
   Fig 8: Identifying D-10 Terminal Connectors

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
   Fig 9: Identifying C-02 Terminal Connectors

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
   NOTE: Also check intermediate connectors C-127 and D-14. If intermediate connector C-127 or D-14 are damaged, repair or replace the connector as described in HARNESS CONNECTOR INSPECTION .

   Q: Are the wiring harness between fuel level sensor connector D-10 (terminal 1) and combination meter connector C-02 (terminal 51) in good condition? 

   1. YES:  Repair or replace the combination meter. The fuel gauge should work normally.
   2. NO:  Repair the wiring harness. The fuel gauge should work normally.
      Fig 10: Identifying C-127 Terminal Connectors

      Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
      Fig 11: Identifying D-14 Terminal Connectors

      Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.