Chrysler 300M 2002 Service Manual page 2621

DRIVEABILITY - NGC
Symptom:
P0461-FUEL LEVEL SENSOR #1 PERFORMANCE
When Monitored and Set Condition:
P0461-FUEL LEVEL SENSOR #1 PERFORMANCE
When Monitored: TEST #1: With the ignition on, the fuel level is compared to the
previuos key down after a 20 second delay. TEST #2: The PCM monitor the fuel level at
ignition on.
Set Condition: TEST #1: If the PCM does not see a difference in fuel level of greater than
0.1 volt the test will fail. TEST #2: If the PCM does not see a change in the fuel level of
.1765 over a set amount of miles the test will fail. Two Trip Fault.
INTERMITTENT CONDITION
VISUALLY INSPECT FUEL TANK
FUEL LEVEL SENSOR SIGNAL CIRCUIT SHORTED TO GROUND
FUEL LEVEL SENSOR SIGNAL CIRCUIT OPEN
GROUND CIRCUIT OPEN
INTERNAL INSPECTION OF THE FUEL TANK
FUEL LEVEL SENSOR
TEST
1 NOTE: Diagnose P0462 or P0463 first, if set along with P0461.
NOTE: Inspect the Fuel Pump Module harness connector for any corrosion
or damage.
Ignition on, engine not running.
With the DRBIII , read DTCs and record the related Freeze Frame data.
Is the Good Trip Counter displayed and equal to zero?
Yes → Go To 2
→ Go To 8
No
2 Visually inspect the Fuel Tank for damage that may restrict the Fuel Sending Unit
float from moving.
Is the Fuel Tank OK?
Yes → Go To 3
→ Replace the Fuel Tank as necessary.
No
POSSIBLE CAUSES
ACTION
Perform POWERTRAIN VERIFICATION TEST VER - 5.
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APPLICABILITY
All
All