M99 - Automatic Transmission

DTC P2714 or P2715

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions provides an overview of each diagnostic category.



DTC Descriptors
DTC P2714
- Clutch Pressure Control (PC) Solenoid 4 - Stuck Off

DTC P2715
- Clutch Pressure Control (PC) Solenoid 4 - Stuck On




Circuit/System Description

The clutch pressure control (PC) solenoid 4 is part of the control solenoid (w/body and TCM) valve assembly and is not serviced separately. The transmission control module (TCM) supplies 12 volts to the clutch PC solenoid 4 through the high side driver 1 circuit. The TCM controls the clutch PC solenoid 4 through the clutch PC solenoid 4 control circuit. The normally low clutch PC solenoid 4 flows fluid to the 1-3 clutch when commanded ON and exhausts fluid when commanded OFF. The clutch PC solenoid 4 regulates the transmission fluid pressure to the 1-3 clutch.


Conditions for Running the DTC

No DTCs P0722 or P0723.


Conditions for Setting the DTC

P2714

The TCM detects TFP Switch 4 is ON when clutch PC Sol. Pressure Command is OFF.

P2715

The TCM detects TFP Switch 4 is OFF when clutch PC Sol. Pressure Command is ON.


Action Taken When the DTC Sets

* DTCs P2714 and P2715 are Type A DTCs.
* The TCM commands maximum line pressure.
* The TCM freezes transmission adaptive functions.



Conditions for Clearing the DIC/DTC

DTCs P2714 and P2715 are Type A DTCs.


Diagnostic Aids

When attempting to set transmission performance DTCs, observe the Freeze Frame and Failure Records to assist in duplicating the failure conditions.


Reference Information
Schematic Reference

Automatic Transmission Controls Schematics (Electrical Diagrams)
Connector End View Reference

Component Connector End Views
Electrical Information Reference

* Circuit Testing
* Connector Repairs
* Testing for Intermittent Conditions and Poor Connections
* Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference

* Scan Tool Output Controls (Scan Tool Output Controls)
* Scan Tool Data List (Scan Tool Data List)
* Scan Tool Data Definitions (Scan Tool Data Definitions)

Special Tools

DT-47825 Control Solenoid Test Plate


Circuit/System Verification

1. Perform the Transmission Fluid Check (Transmission Fluid Check) .
2. Turn ON the ignition, with the engine OFF.

Important: Before clearing the DTC, use the scan tool in order to record the Freeze Frame and Failure Records.


3. Record the DTC Freeze Frame and Failure Records.
4. Clear the DTC.
5. Operate the vehicle in drive with the calculated throttle position greater than 15 percent to obtain 72 km/h (45 mph) and achieve 5th gear. Perform this maneuver 2 times.

• If the DTC resets, go to Circuit/System Testing.




Circuit/System Testing

1. Perform the Line Pressure Check (Line Pressure Check) .

• If the pressure is out of specification correct this concern first.

2. Perform the Control Solenoid Valve and Transmission Control Module Assembly Cleaning (Control Solenoid Valve and TCM Assembly Solenoid Performance Test) and retest the DTC as outlined in the Circuit/System Verification steps.

• If the DTC resets, continue on with testing.

3. Perform the Control Solenoid Valve and Transmission Control Module Assembly Inspection (Control Solenoid Valve and TCM Assembly Solenoid Performance Test) .

• If a concern is found, repair or replace the control solenoid (w/body and TCM) valve assembly.

4. Perform the Control Solenoid Valve and Transmission Control Module Assembly Solenoid Performance Test (Control Solenoid Valve and TCM Assembly Solenoid Performance Test) .

• If the solenoid is found to be leaking or stuck closed, replace the control solenoid (w/body and TCM) valve assembly.

5. Inspect the control valve upper body assembly for sticking valves, damage, scored bores, or debris.

• If a concern if found in the valve body, repair or replace the valve body as necessary.




Component Testing

* Perform the Control Solenoid Valve and Transmission Control Module Assembly Inspection (Control Solenoid Valve and TCM Assembly Solenoid Performance Test) .
* Perform the Control Solenoid Valve and Transmission Control Module Assembly Solenoid Performance Test (Control Solenoid Valve and TCM Assembly Solenoid Performance Test) .



Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

* Control Valve Body Replacement (Control Valve Body Replacement) for - for Control valve body repair or replacement.
* Control solenoid (w/body and TCM) valve assembly replacement. Refer to Control Module References for replacement, setup, and programming.