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) PCM AND WIRING
Turn the ignition off to the lock position.

Remove the Ignition Switch Feed fuse from the TIPM.

CAUTION: Removal of the Ignition Switch Feed fuse from the TIPM will prevent the vehicle from being started in gear.

WARNING: The Ignition Switch Feed fuse must be removed from the TIPM. Failure to do so can result in personal injury or death.

Install the Transmission Simulator, Miller tool #8333 and the Electronic Transmission Adapter kit.

Ignition on, engine not running.

With the Transmission Simulator, set the "Input/Output Speed" switch to "ON" and the rotary switch to the "3000/1250" position.

With the scan tool, monitor the Input and Output Speed Sensor readings.

Does the Input to Output speed read 3000/1250 RPM (± 50 RPM)?

Yes
1. Go to 3).
No
1. Go to 2).
2) (T13) SPEED SENSOR GROUND CIRCUIT OPEN

Fig 1: Checking The Sensor Ground Circuit For An Open
Courtesy of CHRYSLER LLC

Fig 2: Checking The (T13) Sensor Ground Circuit For An Open
Courtesy of CHRYSLER LLC

Turn the ignition off to the lock position.

Disconnect the PCM C4 harness connector.

Disconnect the Input and Output Speed Sensor harness connectors.

NOTE: Check connectors - Clean/repair as necessary.

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 Input and Output (T13) Speed Sensor Ground circuits between the Input and Output Speed Sensor harness connectors and the appropriate terminal of Miller tool #8815.

Is the resistance above 5.0 ohms on either circuit?

Yes
1. Repair the (T13) Speed Sensor Ground circuit for an open.
2. Perform 40/41TE TRANSMISSION VERIFICATION TEST .
No
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 any Service Information Tune-ups or Service Bulletins for any possible causes that may apply. If no problems are found, replace and program the PCM per the Service Information. With the scan tool, perform Quick Learn.
2. Perform 40/41TE TRANSMISSION VERIFICATION TEST .
3) INTERMITTENT WIRING AND CONNECTORS
The conditions necessary to set the 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.

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 40/41TE TRANSMISSION VERIFICATION TEST .
No
1. Test Complete.