2ML70 - Automatic Transmission

DTC P2714 or P2715

Diagnostic Instructions

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

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

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

Circuit/System Description

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

Conditions for Running the DTC

* The engine run time is greater than 1 second.
* Shift solenoid valve 1 is not in a transition state.
* The transmission line pressure is greater than 370 kPa (54 psi) and not fluctuating by greater than 30 kPa (4 psi).
* Propulsion is active.

P2714

The clutch pressure control solenoid 3 commanded pressure is greater than 1800 kPa (261 psi) for 4.5 seconds.

P2715

The clutch pressure control solenoid 3 commanded pressure is less than 5 kPa (1 psi) for 4.5 seconds.

Conditions for Setting the DTC

P2714 - Condition 1

The clutch pressure control solenoid 4 commanded pressure is 1800 kPa (261 psi) and the TFP switch 4 state parameter is Low for 30 seconds.

P2714 - Condition 2

The clutch pressure control solenoid 4 commanded pressure is 1800 kPa (261 psi) and the TFP switch 4 state parameter is Low for 0.5 seconds greater than 5 times during a key cycle.

P2715 - Condition 1

The clutch pressure control solenoid 4 commanded pressure is 5 kPa (1 psi) and the TFP switch 4 state parameter is High for 36 seconds.

P2715 - Condition 2

The clutch pressure control solenoid 4 commanded pressure is 5 kPa (1 psi) and the TFP switch 4 state parameter is High for 1.25 seconds greater than 5 times during a key cycle.

Action Taken When the DTC Sets

* P2714 and P2715 are Type B DTCs.
* The transmission control module commands maximum line pressure.
* The transmission control module freezes transmission adaptive functions.

Conditions for Clearing the DIC/DTC

P2714 and P2715 are Type B 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
DTC Type Reference

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

Control Module References (Control Module References)for scan tool information.
Special Tools

DT-47825 Control Solenoid Test Plate

Circuit/System Verification

1. Perform the Transmission Fluid Level and Condition Check (Transmission Fluid Level and Condition Check) to verify correct fluid level.
2. Perform the Line Pressure Check (Line Pressure Check) to verify correct oil pressure.
3. Perform the Control Solenoid Valve and Transmission Control Module Assembly Inspection (Control Solenoid Valve and Transmission Control Module Assembly Inspection) to verify control solenoid valve assembly condition.
4. Perform the Control Solenoid Valve and Transmission Control Module Assembly Solenoid Performance Test (Control Solenoid Valve and Transmission Control Module Assembly Solenoid Performance Test) to verify control solenoid valve assembly function.
5. Inspect the control valve upper body assembly for sticking valves, damage, scored bores, or debris.

• If a concern is 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 Transmission Control Module Assembly Inspection).
* Perform the Control Solenoid Valve and Transmission Control Module Assembly Solenoid Performance Test (Control Solenoid Valve and Transmission Control Module Assembly Solenoid Performance Test).

Repair Instructions

Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.

* Control Solenoid Valve and Transmission Control Module Assembly Replacement (Control Solenoid Valve and Transmission Control Module Assembly Replacement)for Control Valve Body repair or replacement.
* Control Module References (Control Module References)for Control Solenoid Valve Assembly replacement, programming and setup.