Chrysler 300M 2002 Service Manual page 2724

*CHECKING FUEL DELIVERY —
TEST
6 Turn the ignition off.
Disconnect the fuel pump module harness connector.
Turn the ignition on.
With the DRBIII , actuate the ASD Fuel System test.
Using a 12 volt test light connected to ground, probe the Fuel Pump Relay Output
circuit at the Fuel Pump Module harness connector.
Does the test light illuminate brightly?
Yes → Go To 7
→ Go To 9
No
Caution: Stop All Actuations.
7 Turn the ignition off.
Disconnect the Fuel Pump Module harness connector.
Note: Check connectors - It is critical that the connector is free from any
signs of corrosion or deformities - Clean/repair as necessary.
Using a test light connected to battery voltage, probe the Fuel Pump ground circuit
at the Fuel Pump Module harness connector.
Does the test light illuminate brightly?
Yes → Go To 8
→ Repair the open/high resistance in the fuel pump ground circuit.
No
8 If there are no possible causes remaining, view repair.
Repair
9 Turn the ignition off.
Remove the Fuel Pump Relay from the PDC.
With a 12 volt test light connected to ground, probe the Fuel Pump Relay Fused B+
circuit at the PDC.
Does the test light illuminate?
Yes → Go To 10
→ Repair the Fuel Pump Realy Fused B+ circuit. Check for open fuse
No
10 Turn the ignition off.
Remove the Fuel Pump Relay from the PDC.
Disconnect the Fuel Pump Module harness connector.
NOTE: Check connectors - It is critical that the connector is free from any
signs of corrosion or deformities
Measure the resistance of the Fuel Pump Relay Output circuit from the relay
connector to the fuel pump module connector.
Is the resistance below 5.0 ohms?
Yes → Replace the Fuel Pump Relay.
→ Repair the Fuel Pump Relay Output circuit for an open.
No
Continued
ACTION
Perform POWERTRAIN VERIFICATION TEST VER - 1.
Replace the Fuel Pump Module.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
in the PDC.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
DRIVEABILITY - NGC
295
APPLICABILITY
All
All
All
All
All