Refer to
Fuel Control
.
Circuit Description
1
Diagnostic Aids
2
Test Description
Number(s) below refer to the Step number(s) on the Diagnostic Chart:
-
Be sure there is an adequate amount of fuel in the fuel tank.
If the fuel gauge seems inaccurate or stuck, there may be an obstruction with the Fuel Level Sensor.
-
Be sure there is an adequate amount of fuel in the fuel tank.
If the fuel gauge seems inaccurate or stuck, there may be an obstruction with the Fuel Level Sensor.
-
Be sure there is an adequate amount of fuel in the fuel tank.
If the fuel gauge seems inaccurate or stuck, there may be an obstruction with the Fuel Level Sensor.
-
A Fuel Level Sensor Signal circuit shorted to ground will cause the Fuel Gauge to indicate Empty.
-
An open ground circuit or loose terminals for the Fuel Level Sensor will cause the Fuel Gauge to indicate Full/past Full . Loose or corroded terminals may cause the Fuel Gauge to indicate inaccurately.
-
An open or a shorted (5 V, or 12 V) Fuel Level Sensor Signal circuit will cause the Fuel Gauge to indicate Full/past Full .
-
This vehicle is equipped with a PCM which utilizes an Electrically Erasable Programmable Read Only Memory (EEPROM). When the PCM is being replaced, the new PCM must be programmed. Refer to Powertrain Control Module (PCM) Replacement/Programming .
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Was the Powertrain On-Board Diagnostic (OBD) System Check performed? | Go to Powertrain OBD System Check | ||
2 | Are any IPC DTC's set? | Refer to IPC Diagnosis | ||
If the Fuel Gauge indicates empty be sure there is adequate fuel present. Does the Fuel Gauge indicate empty? | ||||
Does the Fuel Gauge read Full/past Full all the time? | ||||
If the fuel gauge seems inaccurate or stuck, there may be an obstruction with the Fuel Level Sensor. Does the fuel gauge seem inaccurate or stuck? | ||||
If a problem is found repair as necessary. Refer to Repair Procedures in Electrical Diagnosis . Was a Problem Found? | ||||
7 |
Is voltage near the specified value? | 5 V | ||
With the fuel tank harness connector disconnected check the Fuel Level Sensor Ground circuit for opens, or loose/corroded terminals If a problem is found repair as necessary. Refer to Repair Procedures in Electrical Diagnosis . Was a problem Found? | -- | |||
If a problem is found repair as necessary. Refer to Repair Procedures in Electrical Diagnosis . Was a Problem Found? | -- | |||
10 | Inspect the Fuel Level Sensor Ground circuit for loose/corroded terminals. If a problem is found repair as necessary. Refer to Repair Procedures in Electrical Diagnosis . Was a problem Found? | -- | ||
11 | Inspect the Fuel Level Sensor Input circuit for loose/corroded terminals. If a problem is found repair as necessary. Refer to Repair Procedures in Electrical Diagnosis . Was a problem Found? | -- | ||
12 | Refer to IPC Diagnosis to check the Fuel Level Gauge. If a Problem is found repair as necessary. Was a problem found? | -- | ||
Replace the Fuel Level Sensor. Refer to Fuel Sender Assembly Service . Is action complete? | -- | -- | ||
14 | Replace the PCM. Important: The replacement PCM must be programmed. Refer to PCM Replacement/Programming. Is action complete? | -- | -- | |
15 | Check operation of Fuel Level Gauge. Refer to IPC System Check . Was a problem indicated? | -- | action complete |
