Chrysler PT Cruiser 2001 Service Manual Supplement page 2573

P0351-IGNITION COIL #1 PRIMARY CIRCUIT —
TEST
2 Turn the ignition off.
Disconnect the Ignition Coil 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 Ignition Coil 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 Ignition Coil harness connector.
Using a 12 volt test light connected to battery voltage, probe the Ignition Coil driver
circuit.
Crank the engine for 5 seconds while observing the test light.
Does the test light blink/flicker?
Yes → Replace the Ignition Coil.
→ Go To 4
No
4 Turn the ignition off.
Disconnect the Ignition Coil harness connector.
Disconnect the PCM harness connector.
Measure the resistance of the Ignition Coil Driver circuit.
Is the resistance below 5.0 ohms?
Yes → Go To 5
→ Repair the Ignition Coil driver circuit for an open.
No
5 Turn the ignition off.
Disconnect the Ignition Coil harness connector.
Disconnect the PCM harness connector.
Measure the resistance between ground and the Ignition Coil Driver circuit in the
Ignition Coil harness connector.
Is the resistance above 100 kohms?
Yes → Go To 6
→ Repair the Ignition Coil driver circuit for a short to ground.
No
6 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 Powertain Control Module.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
DRIVEABILITY - GAS
Continued
113
APPLICABILITY
All
All
All
All
All