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 the INTERMITTENT CONDITION Diagnostic Procedure. Refer to INTERMITTENT CONDITION .
2. Perform POWERTRAIN VERIFICATION TEST .
2) CHECKING FOR OTHER DTCS
With the scan tool, read the PCM DTCs.

NOTE: If there are any other MAP Sensor or Throttle Inlet Pressure Sensor DTCs present, repair the other MAP Sensor or Throttle Inlet Pressure Sensors before continuing.

Does the scan tool display any other DTCs?

Yes
1. Refer to the symptom list and perform the appropriate diagnostic procedure.
2. Perform POWERTRAIN VERIFICATION TEST .
3. Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
1. Go to 3).
3) CHECKING THE HOSES AND TUBING
NOTE: The exhaust system must be free from any restriction to perform this test.

Check all of the tubes and hoses between the air cleaner and the intake manifold for loose connection, damage or restriction.

Check all of the tubes connected to the intercooler for loose connection, damage or restriction.

Check all of the tubes and hoses connected to the turbocharger, TIP Solenoid, Surge Solenoid and Wastegate Solenoid for loose connection, damage or restriction.

NOTE: Solenoid design and hose connections are identical for all three solenoids. It is possible to connect the hoses to the incorrect solenoid. Verify that hoses are connected to the correct solenoid.

Are any of these conditions evident?

Yes
1. Repair or replace as necessary.
2. Perform POWERTRAIN VERIFICATION TEST .
No
1. Go to 4).
4) (K153) TIP SIGNAL CIRCUIT OPEN

Fig 1: Measuring Resistance Of Signal Circuit
Courtesy of CHRYSLER LLC

Turn the ignition off.

Disconnect the TIP Sensor harness connector.

Disconnect the PCM harness connector.

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 (K153) TIP Signal circuit from the TIP Sensor harness connector to the appropriate terminal of special tool #8815.

Is the resistance below 10.0 ohms?

Yes
1. Go to 5).
No
1. Repair the open in the (K153) TIP Signal circuit.
2. Perform POWERTRAIN VERIFICATION TEST .
5) (K914) SENSOR GROUND CIRCUIT OPEN

Fig 2: Measuring Resistance Of Sensor Ground Circuit
Courtesy of CHRYSLER LLC

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 (K914) Sensor ground circuit from the TIP Sensor harness connector to the appropriate terminal of special tool #8815.

Is the resistance below 10.0 ohms?

Yes
1. Go to 6).
No
1. Repair the open in the (K914) Sensor ground circuit.
2. Perform POWERTRAIN VERIFICATION TEST .
6) SOLENOID TEST #1
Disconnect the hoses from the TIP Solenoid.

Install a plug on the TIP Solenoid hose B connection point.

Connect a vacuum pump to the TIP Solenoid hose A connection point.

With vacuum pump apply 20 inches of vacuum to the TIP Solenoid hose A connection point.

NOTE: Vacuum reading should not drop below 10 inches within 5 seconds.

Does vacuum read above 10 inches for at least 5 seconds?

Yes
1. Go to 7).
No
1. Replace the TIP Solenoid.
2. Perform POWERTRAIN VERIFICATION TEST .
7) SOLENOID TEST #2
Install a plug on the TIP Solenoid hose C connection point.

Connect a vacuum pump to the TIP Solenoid hose A connection point.

Attempt to apply 20 inches of vacuum to the TIP Solenoid hose A connection point.

NOTE: Vacuum should escape through the Solenoid hose B connection point.

Does vacuum escape through the Solenoid hose B connection point?

Yes
1. Go to 8).
No
1. Replace the TIP Solenoid.
2. Perform POWERTRAIN VERIFICATION TEST .
8) SOLENOID TEST #3
Install a plug on TIP Solenoid hose C connection point.

Connect a vacuum pump to the TIP Solenoid hose B connection point.

NOTE: For the result of this test to be accurate the solenoid must be turned on. Apply 12 volts and Ground to the appropriate solenoid terminals to turn the solenoid on.

With vacuum pump apply 20 inches of vacuum to the TIP Solenoid hose B connection point.

NOTE: Vacuum reading should not drop below 10 inches within 5 seconds.

Does vacuum read above 10 inches for at least 5 seconds?

Yes
1. Go to 9).
No
1. Replace the TIP Solenoid.
2. Perform POWERTRAIN VERIFICATION TEST .
9) SOLENOID TEST #4
Install a plug on the TIP Solenoid hose A connection point.

Connect a vacuum pump to the TIP Solenoid hose B connection point.

NOTE: For the result of this test to be accurate the solenoid must be turned on. Apply 12 volts and Ground to the appropriate solenoid terminals to turn the solenoid on.

Attempt to apply 20 inches of vacuum to the TIP Solenoid hose B connection point.

NOTE: Vacuum should escape through the Solenoid hose C connection point.

Does vacuum escape through the Solenoid hose C connection point?

Yes
1. Replace the Throttle Inlet Pressure Sensor.
2. Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
1. Replace the TIP Solenoid.
2. Perform POWERTRAIN VERIFICATION TEST .