P0460-Fuel Level Sensor Circuit Signal Voltage Too High - DaimlerChrysler Jeep Grand Cherokee 2002 Service Manual

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Symptom:
P0460-FUEL LEVEL SENSOR CIRCUIT SIGNAL VOLTAGE TOO
HIGH
When Monitored and Set Condition:

P0460-FUEL LEVEL SENSOR CIRCUIT SIGNAL VOLTAGE TOO HIGH

When Monitored: With the ignition on.
Set Condition: The Fuel Level Sensor Signal voltage is above 4.70 volts.
INTERMITTENT CONDITION
FUEL LEVEL SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE
FUEL LEVEL SENSOR SIGNAL CIRCUIT OPEN
FUEL LEVEL SENSOR GROUND CIRCUIT OPEN
FUEL LEVEL SENSOR
ENGINE CONTROL MODULE
TEST
1
Turn the ignition on.
With the DRB, erase ECM DTCs.
Turn the ignition off, wait 10 seconds, then turn the ignition on.
With the DRB, read ECM DTCs.
Did this DTC set again?
Yes → Go To 2
→ Go To 7
No
2
Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the Fuel Level Sensor harness connector.
Remove the ASD Relay from the PDC.
Connect a jumper wire between cavity 30 and cavity 87 of the ASD Relay connector.
Turn the ignition on.
Measure the voltage on the Fuel Level Sensor Signal circuit.
Is the voltage below 0.5 volt?
Yes → Go To 3
→ Repair the Fuel Level Sensor Signal circuit for a short to voltage.
No
POSSIBLE CAUSES
ACTION
Perform ROAD TEST VERIFICATION - VER-2.
DRIVEABILITY - DIESEL
93
APPLICABILITY
All
All

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