Chrysler PT Cruiser 2001 Service Manual Supplement page 2615

P1282-FUEL PUMP RELAY CONTROL CIRCUIT —
TEST
4 Turn the ignition off.
Remove the fuel pump relay from the PDC.
Note: Check connectors - Clean/repair as necessary.
Turn the ignition on.
Measure the voltage of the fused ignition switch output circuit in the fuel pump relay
connector.
Is the voltage above 10.0 volts?
Yes → Go To 5
→ Repair the open fused ignition switch output circuit. NOTE:
No
5 Turn the ignition off.
Remove the fuel pump relay from the PDC.
NOTE: Check connectors - Clean/repair as necessary.
Measure the resistance between terminals 1 (85) and 2 (86) of the fuel pump relay.
Is the resistance between 50 and 90 ohms?
Yes → Go To 6
→ Replace the fuel pump relay.
No
6 Turn the ignition off.
Remove the fuel pump relay from the PDC.
Disconnect the PCM harness connector(s).
Note: Check connectors - Clean/repair as necessary.
Measure the resistance of the fuel pump relay control circuit between the fuel pump
relay connector and the PCM harness connector.
Is the resistance below 5.0 ohms?
Yes → Go To 7
→ Repair the open fuel pump relay control circuit.
No
7 Turn the ignition off.
Remove the fuel pump relay from the PDC.
Disconnect the PCM harness connector(s).
Note: Check connectors - Clean/repair as necessary.
Measure the resistance between ground and the fuel pump relay control circuit.
Is the resistance below 5.0 ohms?
Yes → Repair the fuel pump relay control circuit for a short to ground.
→ Go To 8
No
8 If there are no possible causes remaining, view repair.
Repair
ACTION
Check for a open fuse.
Perform POWERTRAIN VERIFICATION TEST VER - 2.
Perform POWERTRAIN VERIFICATION TEST VER - 2.
Perform POWERTRAIN VERIFICATION TEST VER - 2.
Perform POWERTRAIN VERIFICATION TEST VER - 2.
Replace the Powertrain Control Module.
Perform POWERTRAIN VERIFICATION TEST VER - 2.
DRIVEABILITY - GAS
Continued
155
APPLICABILITY
All
All
All
All
All