Chrysler PT Cruiser 2001 Service Manual Supplement page 2558

DRIVEABILITY - GAS
P0201-INJECTOR #1 CONTROL CIRCUIT —
FUEL INJECTOR DRIVER CIRCUIT SHORTED TO GROUND
POWERTRAIN CONTROL MODULE
TEST
1 Turn the ignition on.
With the DRBIII , read DTC's.
Is the Good Trip Counter displayed and equal to 0 for the DTC?
Yes → Go To 2
→ Go To 7
No
2 Turn the ignition off.
Disconnect the Fuel Injector harness connector.
Turn the ignition on.
With the DRB, actuate the ASD Relay.
Using a 12 volt test light connected to ground, probe the ASD Relay output circuit in
the Fuel Injector harness connector.
Does the test light illuminate brightly?
Yes → Go To 3
→ Repair the ASD Relay output circuit for an open.
No
3 Turn the ignition off.
Disconnect the Fuel Injector harness connector.
Using a 12 volt test light connected to battery voltage, probe the Fuel Injector driver
circuit.
With the DRB, actuate the Fuel Injector.
Does the test light blink/flicker?
Yes → Replace the Fuel Injector.
→ Go To 4
No
4 Turn the ignition off.
Disconnect the Fuel Injector harness connector.
Disconnect the PCM harness connector.
Measure the resistance of the Fuel Injector driver circuit between the Fuel Injector
harness connector and the PCM harness connector.
Is the resistance below 5.0 ohms?
Yes → Go To 5
→ Repair the Fuel Injector driver circuit for an open.
No
5 Turn the ignition off.
Disconnect the Fuel Injector harness connector.
Disconnect the PCM harness connector.
Measure the resistance between ground and the Fuel Injector driver circuit in the
Fuel Injector harness connector.
Is the resistance below 100k ohms?
Yes → Repair the Fuel Injector driver circuit for a short to ground.
→ Go To 6
No
POSSIBLE CAUSES
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.
Continued
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APPLICABILITY
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