Chrysler 300M 2002 Service Manual page 2622

P0461-FUEL LEVEL SENSOR #1 PERFORMANCE —
TEST
3 Turn the ignition off.
Disconnect the Fuel Pump Module harness connector.
Measure the resistance between ground and the Fuel Level Sensor Signal circuit at
the Fuel Pump Module harness connector.
Is the resistance below 100 ohms?
Yes → Repair the short to ground in the Fuel Level Sensor Signal circuit.
→ Go To 4
No
4 Turn the ignition off.
Disconnect the Fuel Pump Module harness connector.
Disconnect the PCM harness connector.
CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING
THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMI-
NALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL
MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS.
Measure the resistance of the Fuel Level Sensor Signal circuit from the Fuel Pump
Module harness connector to the appropriate terminal of special tool #8815.
Is the resistance below 5.0 ohms?
Yes → Go To 5
→ Repair the open in the Fuel Level Sensor Signal circuit.
No
5 Turn the ignition off.
Disconnect the Fuel Pump Module harness connector.
Measure the resistance of the Ground circuit from the Fuel Pump Module harness
connector to ground.
Is the resistance below 5.0 ohms?
Yes → Go To 6
→ Repair the open in the Ground circuit.
No
6 WARNING: The fuel system is under a constant pressure even with the
engine off. Before opening the fuel system the fuel pressure must be release.
Relieve the fuel pressure in accordance with the service information.
Remove the Fuel Tank in accordance with the Service Information.
Remove the Fuel Pump Module.
Visually inspect the inside of the Fuel Tank for any obstructions or deformities.
Inspect the Fuel Pump Module Float arm for damage.
Were any problems found?
Yes → Repair or replace as necessary.
→ Go To 7
No
7 If there are no possible causes remaining, view repair.
Repair
ACTION
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Replace the Fuel Level Sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
DRIVEABILITY - NGC
193
Continued
APPLICABILITY
All
All
All
All
All