Chrysler PT Cruiser. Manual — part 366
TEST
ACTION
APPLICABILITY
12
Turn the ignition off.
Disconnect the Ignition Coil harness connector.
Disconnect the PCM harness connector.
Measure the resistance of the Ignition Coil driver circuit between the Ignition Coil
harness connector and the PCM harness connector.
Is the resistance below 5.0 ohms?
All
Yes
→ Go To 13
No
→ Repair the Ignition Coil driver circuit for an open.
Perform POWERTRAIN VERIFICATION TEST VER - 1 - NGC.
13
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 below 100k ohms?
All
Yes
→ Repair the Ignition Coil driver circuit for a short to ground.
Perform POWERTRAIN VERIFICATION TEST VER - 1 - NGC.
No
→ Go To 14
14
If there are no possible causes remaining, view repair.
All
Repair
Replace and program the Powertrain Control Module in accor-
dance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 1 - NGC.
15
Turn the ignition off.
Disconnect the CKP Sensor harness connector.
Turn the ignition on.
Measure the voltage of the 5 Volt Supply circuit in the CKP Sensor harness connector.
Is the voltage between 4.8 and 5.2 volts?
All
Yes
→ Go To 16
No
→ Repair the 5 Volt Supply circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 1 - NGC.
16
Turn the ignition off.
Disconnect the CKP Sensor harness connector.
Turn the ignition on.
Measure the voltage of the CKP Sensor Signal circuit in the CKP Sensor harness
connector.
Is the voltage between 4.5 and 5.0 volts?
All
Yes
→ Go To 17
No
→ Go To 19
17
Turn the ignition off.
Disconnect the CKP Sensor harness connector.
Measure the resistance between ground and the Sensor Ground circuit at the CKP
Sensor harness connector.
Is the resistance below 100 ohms?
All
Yes
→ Go To 18
No
→ Repair the Sensor Ground circuit for an open.
Perform POWERTRAIN VERIFICATION TEST VER - 1 - NGC.
554
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*ENGINE CRANKS DOES NOT START - 2.0L/2.4L —
Continued
TEST
ACTION
APPLICABILITY
18
NOTE: Inspect the slots on the crank, tone wheel, for damage. If a problem
is found repair as necessary.
If there are no possible causes remaining, view repair.
All
Repair
Replace the Crankshaft Position Sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 1 - NGC.
19
Turn the ignition off.
Disconnect the CKP Sensor harness connector.
Disconnect the PCM harness connectors.
Measure the resistance of the CKP Sensor Signal circuit from the CKP Sensor
harness connector to the PCM harness connector.
Is the resistance below 5.0 ohms?
All
Yes
→ Go To 20
No
→ Repair the CKP Sensor Signal circuit for an open.
Perform POWERTRAIN VERIFICATION TEST VER - 1 - NGC.
20
Turn the ignition off.
Disconnect the CKP Sensor harness connector.
Measure the resistance between ground and the CKP Sensor Signal circuit at the
CKP Sensor harness connector.
Is the resistance below 100 ohms?
All
Yes
→ Repair the CKP Sensor Signal circuit for a short to ground.
Perform POWERTRAIN VERIFICATION TEST VER - 1 - NGC.
No
→ Go To 21
21
Turn the ignition off.
Disconnect the CKP Sensor harness connector.
Turn the ignition on.
Measure the voltage of the CKP Sensor Signal circuit in the CKP Sensor harness
connector.
Is the voltage above 4.7 volts?
All
Yes
→ Repair the CKP Sensor Signal circuit for a short to battery
voltage.
Perform POWERTRAIN VERIFICATION TEST VER - 1 - NGC.
No
→ Go To 22
22
Turn the ignition off.
Disconnect the CKP Sensor harness connector.
Disconnect the PCM harness connector(s).
Measure the resistance between the CKP Sensor Signal circuit and the 5 Volt Supply
circuit in the CKP Sensor harness connector.
Is the resistance below 5.0 ohms?
All
Yes
→ Repair the CKP Sensor Signal circuit shorted to the 5 Volt Supply
circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 1 - NGC.
No
→ Go To 23
555
STARTING
*ENGINE CRANKS DOES NOT START - 2.0L/2.4L —
Continued
TEST
ACTION
APPLICABILITY
23
If there are no possible causes remaining, view repair.
All
Repair
Replace and program the Powertrain Control Module in accor-
dance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 1 - NGC.
24
Turn the ignition off.
Disconnect the fuel pump module harness connector.
Turn the ignition on.
With the DRBIII
t, 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?
All
Yes
→ Go To 25
No
→ Go To 27
Caution: Stop All Actuations.
25
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?
All
Yes
→ Go To 26
No
→ Repair the open/high resistance in the fuel pump ground circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 1 - NGC.
26
If there are no possible causes remaining, view repair.
All
Repair
Replace the Fuel Pump Module.
Perform POWERTRAIN VERIFICATION TEST VER - 1 - NGC.
27
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?
All
Yes
→ Go To 28
No
→ Repair the Fuel Pump Relay Fused B+ circuit. Check for open fuse
in the PDC.
Perform POWERTRAIN VERIFICATION TEST VER - 1 - NGC.
556
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*ENGINE CRANKS DOES NOT START - 2.0L/2.4L —
Continued
TEST
ACTION
APPLICABILITY
28
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?
All
Yes
→ Replace the Fuel Pump Relay.
Perform POWERTRAIN VERIFICATION TEST VER - 1 - NGC.
No
→ Repair the open fuel pump relay output circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 1 - NGC.
557
STARTING
*ENGINE CRANKS DOES NOT START - 2.0L/2.4L —
Continued
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