Diagnostic Instructions

DTC Descriptors

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

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

Diagnostic Fault Information

The following fault table will help determine if a hydraulic circuit or an incorrect position of a valve train component affects the transmission operation.

Component	Cause	DTCs
1-2-3-4 Clutch Piston Housing	1-2-3-4 clutch piston seal cut or damaged	P2714
1-2-3-4 and 3-5-R Clutch Housing Assembly	1-2-3-4 clutch backing plate retaining ring not seated, causing the piston to over-travel and cut 1-2-3-4 clutch piston seal	P2714
2-6 Clutch Piston Assembly	2-6 clutch piston seal failure or damaged	P2714
3-5 Reverse Clutch Piston	3-5 reverse clutch piston inner/outer seal cut or damaged	P2715
4-5-6 Clutch Piston Assembly	4-5-6 clutch piston seal failure or damaged	P2715
Automatic Transmission Fluid Filter Assembly	Oil filter loose or damaged	P2714
Automatic Transmission Fluid Pump Cover Assembly	•  Fluid pump cover vanes and fluid pump rotor broken     •  1-2-3-4 and 3-5 reverse clutch fluid seal ring, on pump cover stator shaft, cut or damaged	P2714
Center Support Assembly	•  Center support fluid passage seal assembly, incorrectly installed, cut or damaged     •  Lube hole blocked, incorrectly drilled or omitted	P2714
Control Solenoid (w/body and TCM) Valve Assembly	Clutch Pressure Control Solenoid 4:     •  Always exhausting - Stuck On     •  Not exhausting - Stuck Off     •  Needle piston or armature pin binding     •  Control signal fluid supply leak - valve body filter plate assembly cracked or damaged gasket seal     •  O-ring seals leaking	P2714 P2715
	•  HSD failure     •  TCM failure	P2714
Output Carrier Internal Front Gear	Installed upside down	P2714
Upper Control Valve Body	2-6 Clutch regulator valve stuck - debris, sediment, binding or scored bore	P2714 P2715

Circuit/System Description

The clutch pressure control (PC) solenoid 4 is integral to the control solenoid (w/body and TCM) valve assembly and has no serviceable parts. The PC solenoid 4 is a normally high-pressure control solenoid which provides fluid pressure to the B-2-6 clutch regulator valve. The TCM controls the solenoid pressure by regulating the exhaust fluid. When the TCM commands the solenoid off, the exhausting fluid is stopped and the B-2-6 pressure is high. When commanded on, the clutch PC solenoid 4 regulates the amount of exhausting transmission fluid. Solenoid power is supplied by the TCM through a high side driver (HSD). The HSD protects the circuits and components that the TCM powers. Should the circuit overload the driver will shutdown. After the overload is removed the HSD reset.

Conditions for Running the DTC

P2714

P2715

Conditions for Setting the DTC

P2714

The TCM detects an incorrect on-coming clutch gear ratio, or flare, when the 2-6 clutch is commanded ON for 0.5 seconds and the transmission input shaft speed is greater than 75 RPM from the anticipated input shaft speed.

P2715

The TCM detects an incorrect off-going clutch gear ratio, or tie-up, when the 2-6 clutch is commanded OFF for 0.5 seconds and the transmission input shaft speed is greater than 40 RPM from the anticipated input shaft speed.

Action Taken When the DTC Sets

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

Connector End View Reference

Component Connector End Views

Electrical Information Reference

Description and Operation

Electronic Component Description

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Special Tools

Circuit/System Verification

1. Perform the 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 .

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

2. Perform the Control Solenoid Valve and Transmission Control Module Assembly Cleaning 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 .

⇒	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 .

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

5. Inspect the center support fluid passage seal assembly for cut or damaged seals.

⇒	If a concern is found replace the seal assembly.

6. 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.

7. Inspect the 2-6 clutch assembly for damage.

⇒	If a concern is found in the 2-6 clutch assembly, repair or replace as necessary.

Component Testing

Perform the Control Solenoid Valve and Transmission Control Module Assembly Inspection .

PC Sol 4 Operation

Operating Conditions	Normal Operation	Stuck OFF	Stuck ON
Steady State Gears 2, 6	2, 6	Neutral	2, 6
Steady State Gears 1, 3, 4, 5	1, 3, 4, 5	1, 3, 4, 5	2, 6
Garage Shift	Park/Neutral to Reverse/Drive	Drive Gear	Drive Gear
Downshift from gears 3, 4, 5 to 2	2	Neutral	2, 6
Upshift from gears 2 to 3, 4, 5	3, 4, 5	3, 4, 5	2, 6

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.