Diagnostic Test

WARNING: This page is about a different car, the 2006 Chrysler PT Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

1) GOOD TRIP INDICATED
NOTE: Record the Freeze Frame Information that set along with the DTC.

Turn the ignition on.

With the scan tool, read DTCs.

Does the Good Trip Indicator display NO?

Yes
1. Go To 2).
No
1. Refer to the INTERMITTENT CONDITION diagnostic procedure.
2. Perform the POWERTRAIN VERIFICATION TEST. (Refer to STANDARD PROCEDURE - POWERTRAIN VERIFICATION TEST) .
2) FUEL INJECTOR

Fig 1: Measuring Resistance Between Terminals Of Fuel Injector
Courtesy of DAIMLERCHRYSLER CORP.

Turn the ignition off.

Disconnect the Fuel Injector harness connector.

Measure the resistance between the terminals of the Fuel Injector.

Is the resistance between 11.4 to 12.6 ohms?

Yes
1. Go To 3).
No
1. Replace the Fuel Injector.
2. Perform the POWERTRAIN VERIFICATION TEST. (Refer to STANDARD PROCEDURE - POWERTRAIN VERIFICATION TEST) .
3) ASD RELAY OUTPUT CKT OPEN

Fig 2: Checking ASD Relay Output Circuit For Open At Fuel Injector Connector
Courtesy of DAIMLERCHRYSLER CORP.

Turn the ignition on.

With the scan tool, actuate the ASD Relay.

Using a 12-volt test light connected to ground, probe the ASD Relay Output circuit in the injector connector.

Does the test light illuminate brightly?

Yes
1. Go To 4).
No
1. Repair the open ASD Relay Output circuit.
2. Perform the POWERTRAIN VERIFICATION TEST. (Refer to STANDARD PROCEDURE - POWERTRAIN VERIFICATION TEST) .
4) FUEL INJECTOR DRIVER CIRCUIT SHORTED TO ASD RELAY OUTPUT CIRCUIT

Fig 3: MEASURE THE RESISTANCE BETWEEN ASD RELAY OUTPUT CIRCUIT AND THE FUEL INJECTOR DRIVER CIRCUIT
Courtesy of DAIMLERCHRYSLER CORP.

Turn the ignition off.

Disconnect the PCM harness connector.

Measure the resistance between the ASD Relay Output circuit and the Fuel Injector driver circuit in the Fuel Injector harness connector.

Is the resistance below 1000 ohms?

Yes
1. Repair the Fuel Injector driver circuit for a short to the ASD Relay Output circuit
2. Perform the POWERTRAIN VERIFICATION TEST. (Refer to STANDARD PROCEDURE - POWERTRAIN VERIFICATION TEST) .
No
1. Go To 5).
5) FUEL INJECTOR DRIVER CIRCUIT SHORTED TO SHORTED TO BATTERY VOLTAGE

Fig 4: MEASURING VOLTAGE OF FUEL INJECTOR DRIVER CIRCUIT
Courtesy of DAIMLERCHRYSLER CORP.

Turn the ignition on.

With the scan tool, actuate the ASD Relay.

Measure the voltage of the Fuel Injector driver circuit in the Fuel Injector harness connector.

Is the voltage above 1.0 volt?

Yes
1. Repair the Fuel Injector driver circuit for a short to battery voltage
2. Perform the POWERTRAIN VERIFICATION TEST. (Refer to STANDARD PROCEDURE - POWERTRAIN VERIFICATION TEST) .
No
1. Go To 6).
6) PCM
NOTE: Before Continuing: Disconnect the PCM harness connector and check the related wiring terminals for corrosion, damage or terminal push out. Repair as necessary.

Using the schematics as a guide, inspect the wire harness and connectors. Pay particular attention to all Power and Ground circuits.

If there are no possible causes remaining, view repair.

Repair
1. Replace and program the Powertrain Control Module in accordance with the Service Information. (Refer to STANDARD PROCEDURE - PCM/ECM/SKREEM PROGRAMMING) .
2. Perform the POWERTRAIN VERIFICATION TEST. (Refer to STANDARD PROCEDURE - POWERTRAIN VERIFICATION TEST) .