Diagnostic Test

WARNING: This page is about a different car, the 2007 Chrysler PT Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

1) ACTIVE DTC
Ignition on, engine not running.

With a scan tool, read DTCs.

Is the DTC active at this time?

Yes
1. Go to 2).
No
1. Refer to INTERMITTENT CONDITION .
2. Perform POWERTRAIN VERIFICATION TEST .
2) SURGE VALVE SOLENOID OPERATION

Fig 1: Checking Surge Valve Solenoid Operation With 12-Volt Test Light
Courtesy of CHRYSLER LLC

Turn the ignition off.

Disconnect the Surge Valve Solenoid harness connector.

Using a 12-volt test light, jumper across the Surge Valve harness connector.

NOTE: While actuating the solenoid wiggle the related wiring harness.

Turn the ignition on.

With the scan tool, actuate the Surge Valve Solenoid.

Does the test light illuminate brightly and flash on and off?

Yes
1. Replace the Surge Valve Solenoid.
2. Perform POWERTRAIN VERIFICATION TEST .
No
1. Go to 3).
3) (A142) ASD RELAY OUTPUT CIRCUIT

Fig 2: Checking ASD Relay Output Circuit With 12-Volt Test Light
Courtesy of CHRYSLER LLC

Turn the ignition off.

Using a 12-volt test light connected to ground, probe the (A142) ASD Relay Output circuit in the harness connector.

Turn the ignition on.

With the scan tool, actuate the ASD Relay.

Does the test light illuminate brightly and flash on and off?

Yes
1. Go to 4).
No
1. Repair the (A142) ASD Relay Output circuit.
2. Perform POWERTRAIN VERIFICATION TEST .
4) (K150) SURGE SOL CONTROL CIRCUIT SHORTED TO BATTERY VOLTAGE

Fig 3: Measuring Voltage At Surge Sol Control Circuit
Courtesy of CHRYSLER LLC

Turn the ignition off.

Disconnect the PCM harness connectors.

Turn the ignition on.

Measure the voltage of the (K150) Surge Sol Control circuit in the Surge Valve Solenoid harness connector.

Does the voltmeter indicate any voltage present?

Yes
1. Repair the short to voltage in the (K150) Surge Sol Control circuit.
2. Perform POWERTRAIN VERIFICATION TEST .
No
1. Go to 5).
5) (K150) SURGE SOL CONTROL CIRCUIT OPEN

Fig 4: Measuring Resistance At The Surge Sol Control Circuit
Courtesy of CHRYSLER LLC

Turn the ignition off.

CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install Miller Special Tool #8815 to perform diagnosis.

Measure the resistance of the (K150) Surge Sol Control circuit from the Surge Valve Solenoid harness connector to the appropriate terminal of special tool #8815.

Is the resistance below 5.0 ohms?

Yes
1. Go to 6).
No
1. Repair the open in the (K150) Surge Sol Control circuit.
2. Perform POWERTRAIN VERIFICATION TEST .
6) (K150) SURGE SOL CIRCUIT SHORTED TO GROUND

Fig 5: Measuring Resistance Between Ground & Surge Sol Control Circuit
Courtesy of CHRYSLER LLC

Measure the resistance between ground and the (K150) Surge Sol Control circuit at the Surge Valve Solenoid harness connector.

Is the resistance below 100 ohms?

Yes
1. Repair the short to ground in the (K150) Surge Sol Control circuit.
2. Perform POWERTRAIN VERIFICATION TEST .
No
1. Go to 7).
7) PCM
NOTE: Before continuing, check the PCM harness connector terminals for corrosion, damage or terminal push out. Repair as necessary.

If there are no possible causes remaining, view repair.

Repair
1. Replace and program the Powertrain Control Module in accordance with the Service Information.
2. Perform POWERTRAIN VERIFICATION TEST .