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

Required Special Tool:

MB991223: Harness Set

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?

YES < other meters all operate. > : Go to Step 2.

NO < one of the meters do not operate. > : Refer to INSPECTION PROCEDURE 6 .
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?

YES : Go to Step 3.

NO : Replace the fuel level sensor. The fuel gauge should work normally.
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 Terminals Of Fuel Level Sensor D-10 Connector
  Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
  
  Fig 2: Measuring Resistance Value Between Terminal 2 And Ground
  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?

YES : Go to Step 6.

NO : Go to Step 4.
STEP 4. Check fuel level sensor connector D-10 for damage.
Q: Is fuel level sensor connector D-10 in good condition?

YES : Go to Step 6.

NO : Repair or replace the connector. Refer to HARNESS CONNECTOR INSPECTION . The fuel gauge should work normally.

Fig 3: Identifying Terminals Of Fuel Level Sensor D-10 Connector
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
STEP 5. Check the wiring harness between fuel level sensor connector D-10 (terminal 2) and ground.

Fig 4: Identifying Terminals Of Fuel Level Sensor D-10 Connector
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

Fig 5: Identifying Terminals Of Intermediate D-14 Connector
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?

YES : There is no action to be taken.

NO : Repair the wiring harness. The fuel gauge should work normally.
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?

YES : Go to Step 7.

NO : Repair or replace the connector. Refer to HARNESS CONNECTOR INSPECTION . The fuel gauge should work normally.

Fig 6: Identifying Terminals Of Combination Meter C-02 Connector
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

Fig 7: Identifying Terminals Of Fuel Level Sensor C-10 Connector
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
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 Terminals Of Fuel Level Sensor C-10 Connector
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

Fig 9: Identifying Terminals Of Combination Meter C-02 Connector
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?

YES : Repair or replace the combination meter. The fuel gauge should work normally.

NO : Repair the wiring harness. The fuel gauge should work normally.

Fig 10: Identifying Terminals Of Intermediate C-127 Connector
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

Fig 11: Identifying Terminals Of Intermediate D-14 Connector
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.