Diagnostic Test
WARNING: This page is about a different variant/trim than selected.
- CHECK IF RELATED TCM DTCS ARE PRESENT
- With the scan tool, read DTCs
Are there any TCM Power Input DTCs present also?
Yes
- Perform the appropriate diagnostic procedure(s).
No
- Go to step 2
- With the scan tool, read DTCs
- CHECK FOR LOSS OF PRIME DTC
- With the scan tool, read DTCs.
Is the DTC P0944 present also?
Yes
- Perform the appropriate diagnostic procedure(s).
No
- Go to step 3
- With the scan tool, read DTCs.
- CHECK IF DTC P084B IS CURRENT
- 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 possible serious or fatal injury.
- Install the Transmission Simulator, Miller tool #8333A and the Electronic Transmission Adapter kit.NOTE: Check connectors - Clean/repair as necessary.
- Ignition on, engine not running.
- With the Transmission Simulator, turn the Pressure Switch selector to DC.
- With the scan tool, monitor the DC Pressure Switch state while pressing the Pressure Switch Test button on the Transmission Simulator.
Did the DC Pressure Switch state change?
Yes
- Replace the Transmission Solenoid/TRS Assembly per the Service Information.
- Perform 62TE VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure
No
- Go to step 5
- (T83) DC PRESSURE SIGNAL CIRCUIT OPEN
- Turn the ignition off to the lock position.
- Disconnect the PCM C4 harness connector.
- Disconnect the Transmission Solenoid/TRS Assembly 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 PCM Pinout Box 8815 to perform diagnosis.
- Measure the resistance of the (T83) DC Pressure Signal circuit between the appropriate terminal of the Miller tool #8815 and the Transmission Solenoid/TRS Assembly harness connector.
Is the resistance above 5.0 ohms?
Yes
- Repair the (T83) DC Pressure Signal circuit for an open.
- Perform 62TE VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure
No
- Go to step 6
- (T83) DC PRESSURE SIGNAL CIRCUIT SHORT TO GROUND
- Measure the resistance between ground and the (T83) DC Pressure Signal circuit.
Is the resistance below 5.0 ohms?
Yes
- Repair the (T83) DC Pressure Signal circuit for a short to ground.
- Perform 62TE VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure
No
- Go to step 7
- Measure the resistance between ground and the (T83) DC Pressure Signal circuit.
- (T83) DC PRESSURE SIGNAL CIRCUIT SHORT TO VOLTAGE
- Ignition on, engine not running.
- With the scan tool in the TIPM, actuate the TCM output.
- Measure the voltage of the (T83) DC Pressure Signal circuit.
Is the voltage above 0.5 volts?
Yes
- Repair the (T83) DC Pressure Signal circuit for a short to voltage.
- Perform 62TE VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure
No
- Replace and program the Powertrain Control Module per the Service Information. With the scan tool perform QUICK LEARN.
- Perform 62TE VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure
- 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
- Repair as necessary.
- Perform 62TE VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure
No
- Test Complete.