Dodge ZB 2005 Service Manual page 1239

DRIVEABILITY - GAS
Symptom:
P0462-FUEL LEVEL SENDING UNIT VOLTS TOO LOW
When Monitored and Set Condition:
P0462-FUEL LEVEL SENDING UNIT VOLTS TOO LOW
When Monitored: Ignition on and battery voltage above 10.4 volts.
Set Condition: The Fuel Level Sensor signal voltage goes below 0.2 of a volt at the PCM
for more than 5 seconds.
FUEL LEVEL SENSOR VOLTAGE BELOW 0.2 OF A VOLT
FUEL LEVEL SENSOR
(G4) FUEL LEVEL SENSOR SIGNAL CIRCUIT SHORTED TO GROUND
(G4) FUEL LEVEL SENSOR SIGNAL CIRCUIT SHORTED TO (Z2) SENSOR GROUND CIRCUIT
PCM
TEST
1 Ignition on, engine not running.
With the DRBIII , read DTCs and record the related Freeze Frame data.
With the DRBIII , read the Fuel Level Sensor voltage.
Is the Fuel Level Sensor voltage below 0.2 of a volt?
Yes → Go To 2
→ Refer to the INTERMITTENT CONDTION Symptom (Diagnostic
No
2 Turn the ignition off.
Disconnect the Fuel Pump Module harness connector.
Ignition on, engine not running.
With the DRBIII , read the Fuel Level Sensor voltage.
Did the Fuel Level Sensor voltage change from below 0.2 of a volt to above 4.0 volts?
Yes → Replace the Fuel Level Sensor.
→ Go To 3
No
3 Turn the ignition off.
Disconnect the PCM harness connectors.
Measure the resistance between ground and the (G4) Fuel Level Sensor Signal
circuit.
Is the resistance below 100 ohms?
Yes → Repair the short to ground in the (G4) Fuel Level Sensor Signal
→ Go To 4
No
POSSIBLE CAUSES
ACTION
Procedure).
Perform POWERTRAIN VERIFICATION TEST VER - 2.
Perform POWERTRAIN VERIFICATION TEST VER - 2.
circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 2.
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APPLICABILITY
All
All
All