Diagnostic Test

WARNING: This page is about a different car, the 2006 Dodge Magnum, 2006 Dodge Charger, and 2006 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.

1) DETERMINE IF RELATED DTC'S ARE PRESENT
With the scan tool, check Transmission DTC's.

Are there any Speed Sensor DTCs present?

Yes
1. Perform appropriate DTC test(s) in this article.
2. Perform 42RLE TRANSMISSION VERIFICATION TEST - VER 1
No
1. Go To step 2).
2) CHECK TO SEE IF DTC IS CURRENT
With the scan tool, Check the STARTS SINCE SET counter for P0712.

NOTE: This counter only applies to the last DTC set.

Is the STARTS SINCE SET counter 2 or less?

Yes
1. Go To step 3).
No
1. Go To step 6).
3) PCM AND WIRING
Turn the ignition off to the lock position.

Remove the Starter Relay.

CAUTION: Removal of the Starter Relay is to prevent a Transmission, NO RESPONSE, condition and disable the starter.

Install the Transmission Simulator, Miller tool #8333 and the Electronic Transmission Adapter kit 8333-1A.

NOTE: Check connectors - Clean/repair as necessary.

Ignition on, engine not running.

With the Transmission Simulator, turn the Input/Output switch to OFF.

With the scan tool, monitor the TRANS TEMP VOLTS while turning the Thermistor Voltage switch to all three positions on the Transmission Simulator.

Compare the scan tool readings with the numbers listed on the Transmission Simulator.

Do the readings on the Transmission Simulator match the scan tool readings +/- 0.2 volts?

Yes
1. Go To step 4).
No
1. Go To step 5).
4) TRANSMISSION TEMPERATURE SENSOR
View repair.

Repair
1. Replace Transmission Solenoid/TRS Assembly per the Service Information.
2. Perform 42RLE TRANSMISSION VERIFICATION TEST - VER 1
5) (T54) TRANSMISSION TEMPERATURE SENSOR SIGNAL CIRCUIT SHORT TO GROUND

Fig 1: Checking Transmission Temperature Sensor Signal Circuit For Short To Ground
Courtesy of DAIMLERCHRYSLER CORP.

Turn the ignition off to the lock position.

Disconnect the PCM C4 harness connector.

Disconnect the TRS harness connector.

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 Tool #8815 to perform diagnosis.

Measure the resistance between ground and the (T54) Transmission Temperature Sensor Signal circuit.

Is the resistance below 5.0 ohms?

Yes
1. Repair the (T54) Transmission Temperature Sensor Signal circuit for a short to ground.
2. Perform 42RLE TRANSMISSION VERIFICATION TEST - VER 1
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. If no problems are found, replace the PCM per the Service Information. With the scan tool PERFORM QUICK LEARN, then program Pinion Factor in the Front Control Module. (Refer to ELECTRICAL/ELECTRONIC CONTROL MODULES/POWERTRAIN CONTROL MODULE - REMOVAL)
2. Perform 42RLE TRANSMISSION VERIFICATION TEST - VER 1
6) 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.

With the scan tool, check the EATX 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 42RLE TRANSMISSION VERIFICATION TEST - VER 1
No
1. Test Complete.