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) CHECK IF RELATED ENGINE TPS DTCS ARE PRESENT
With the scan tool, check Engine DTCs, including pending DTCs and one trip failures.

Are there any Engine TPS DTCs present?

Yes
1. Refer to appropriate ENGINE ELECTRICAL DIAGNOSTICS article and perform the appropriate diagnostic procedure.
2. Refer to DIAGNOSTIC CODE INDEX and perform the appropriate diagnostic procedure(s).
No
1. Go To step 2).
2) CHECK IF THE DTC IS CURRENT
With the scan tool, record the DTC EVENT DATA to help identify the conditions in which the DTC was set.

With the scan tool, erase Transmission DTCs.

NOTE: To erase EVENT DATA information, a BATTERY DISCONNECT must be performed. Performing a BATTERY DISCONNECT will reset all learned Transmission values to controller defaults which may lead to erratic shift schedules.

Drive the vehicle and try to duplicate the conditions in which the DTC was reported by the EVENT DATA.

With the scan tool, read Transmission DTCs.

Does this DTC reset?

Yes
1. Go To step 3).
No
1. Go To step 4).
3) CHECK THE THROTTLE POSITION SENSOR OPERATION
Ignition on, engine not running.

With the scan tool, under Transmission Sensors, monitor the TPS voltage in the following step.

Slowly open and close the throttle while checking for erratic voltage changes.

Did the TPS voltage change smooth and consistent?

Yes
1. Using the schematics as a guide, check the Powertrain Control Module (PCM) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. Check for Service Information Tune-ups or Service Bulletins for any possible causes that may apply. If no problems are found, replace the PCM per the Service Information. With the scan tool, perform QUICK LEARN.
2. Perform 40/41 TE TRANSMISSION VERIFICATION TEST - VER 1 .
No
1. Replace the Throttle Position Sensor per the Service Information.
2. Perform 40/41 TE TRANSMISSION VERIFICATION TEST - VER 1 .
4) INTERMITTENT WIRING AND CONNECTORS
The conditions necessary to set this DTC are not present at this time.

Using the schematics as a guide, inspect the wiring and connectors specific to this circuit.

Wiggle the wires while checking for shorted and open circuits.

Pay particular attention to the TPS signal and sensor ground circuits.

With the scan tool, check the DTC EVENT DATA to help identify the conditions in which the DTC was set.

Were there any problems found?

Yes
1. Repair as necessary.
2. Perform 40/41 TE TRANSMISSION VERIFICATION TEST - VER 1 .
No
1. Test Complete.