Inspection Procedure 3: 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 are operating 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: COMBINATION METER DOES NOT WORK. .
2. STEP 2. Check the fuel level sensor. 

   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-13 in order to the ground circuit to the fuel level sensor. 
   1. Disconnect fuel level sensor connector D-13, and measure at the wiring harness side.
      Fig 1: Locating Connector D-13

      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

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
4. STEP 4. Check level sensor connector D-13 in for damage. 

   Q: Is fuel level sensor connector D-13 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: Locating Connector D-13

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
5. STEP 5. Check the wiring harness between fuel level sensor connector D-13 (terminal 2) and ground 
   Fig 4: Identifying Connector D-13

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
   NOTE: Also check intermediate connector D-17. If intermediate connector D-17 is damaged, repair or replace the connector as described in HARNESS CONNECTOR INSPECTION .

   Q: Is the wiring harness between fuel level sensor connector D-13 (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 Intermediate Connector D-17

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
6. STEP 6. Check fuel level sensor connector D-13 and combination meter connector C-04 for damage. 

   Q: Are fuel level sensor connector D-13 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 Connector D-13

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
   Fig 7: Identifying Connector D-13

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
7. STEP 7. Check the wiring harness between fuel level sensor connector D-13 (terminal 1) and combination meter connector C-04 (terminal 51) 
   Fig 8: Identifying Connector D-13

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
   Fig 9: Identifying Connector C-04

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
   NOTE: Also check intermediate connectors C-122 and D-17. If intermediate connector C-122 or D-17 are damaged, repair or replace the connector as described in HARNESS CONNECTOR INSPECTION .

   Q: Are the wiring harness between fuel level sensor connector D-13 and (terminal 1) and combination meter connector C-04 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 Connector C-122

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
   Fig 11: Identifying Connector D-17

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.