P2715
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
Pressure control solenoid 4 is part of the control solenoid valve assembly which has no serviceable components. Pressure control solenoid 4 regulates transmission fluid pressure to the 2-6 clutch regulator valve which controls pressure to the 2-6 clutch. The transmission control module (TCM) calculates gear ratio based on the speed signals from the input shaft speed (ISS) sensor and the output shaft speed (OSS) sensor. The TCM compares the expected transmission gear ratio to the calculated gear ratio for each commanded gear.
Conditions for Running the DTC
P2714
* DTC P0101, P0102, P0103, P0106, P0107, P0108, P0171, P0172, P0174, P0175, P0201, P0202, P0203, P0204, P0205, P0206, P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0401, P042E, P0716, P0717, P0722, P0723, or P182E is not set.
* Ignition voltage is greater than 8.5 V.
* Output speed is 36 RPM or greater, or throttle position is 0.5 % or greater.
* Throttle position signal is valid.
* Engine speed is 400-7,500 RPM for 5 s.
* Transmission fluid temperature is -6.7°C (20°F) or greater.
* High side driver is enabled.
P2715
* DTC P0101, P0102, P0103, P0106, P0107, P0108, P0171, P0172, P0174, P0175, P0201, P0202, P0203, P0204, P0205, P0206, P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0401, P042E, P0716, P0717, P0722, P0723, or P182E is not set.
* Ignition voltage is greater than 8.5 V.
* High side driver is enabled.
* Transmission fluid temperature is -6.7°C (20°F) or greater.
* Engine speed is 400-7,500 RPM for 5 s.
* Transmission output shaft speed is 36 RPM or greater, or the throttle position is 0.5 % or greater.
* Commanded and attained range is not 1st gear.
Conditions for Setting the DTC
P2714
TCM has detected an incorrect gear ratio or neutral condition when the 2-6 clutch is commanded ON. This condition must occur 3 times.
P2715
TCM has detected an incorrect gear ratio change when the 2-6 clutch is commanded OFF during a shift or, when 2nd gear ratio is detected in 1st gear. This condition must occur 3 times.
Action Taken When the DTC Sets
P2714
* DTC P2714 is a Type A DTC.
* TCM commands maximum line pressure.
* TCM inhibits Tap Up/Down function.
* TCM inhibits manual shifting of forward gears.
* TCM freezes transmission adaptive functions.
* TCM limits the transmission to Reverse and 3rd gear operation.
* TCM inhibits auto grade braking.
* TCM inhibits neutral idle.
P2715
* DTC P2715 is a Type A DTC.
* TCM commands maximum line pressure.
* TCM inhibits Tap Up/Down function.
* TCM inhibits manual shifting of forward gears.
* TCM freezes transmission adaptive functions.
* TCM limits the transmission to Reverse and 2nd gear operation.
* TCM inhibits auto grade braking.
* TCM inhibits neutral idle.
Conditions for Clearing the DTC
DTCs P2714 and P2715 are Type A DTCs.
Reference Information
Schematic Reference
Automatic Transmission Controls Schematics Electrical Diagrams
Connector End View Reference
* Component Connector End Views A/C Compressor Clutch
* Inline Harness Connector End Views X100
Description and Operation
* Transmission General Description Transmission General Description
* Transmission Component and System Description Transmission Component and System Description
* Electronic Component Description Electronic Component Description
* Drive Range, First Gear Drive Range, First Gear
* Drive Range, Sixth Gear Drive Range, Sixth Gear
Electrical Information Reference
* Circuit Testing Circuit Testing
* Connector Repairs Connector Repairs
* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections
* Wiring Repairs Wiring Repairs
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
Circuit/System Verification
Warning: Refer to Parking Brake and Drive Wheels Warning Parking Brake and Drive Wheels Warning.
Note: If other DTCs are set, diagnose those DTCs first.
1. Engine idling with transmission in Park, with parking brake applied and drive wheels chocked.
2. Verify the transmission fluid level and condition is correct. Refer to Transmission Fluid Level and Condition Check Transmission Fluid Level and Condition Check.
• If the transmission fluid level and condition is not correct
Repair as necessary.
• If the transmission fluid level and condition is correct
3. Ignition ON, clear the TCM DTCs with a scan tool.
4. Verify DTC P2714 or P2715 does not set while performing a road test. Refer to Road Test Initial Inspection and Diagnostic Overview.
• If DTC P2714 or P2715 sets
Refer to Circuit/System Testing.
• If DTC P2714 or P2715 does not set
5. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
6. Verify the DTC does not set.
• If the DTC sets
Refer to Circuit/System Testing.
• If DTC does not set
7. All OK.
Circuit/System Testing
Note: You must perform the Circuit/System Verification first.
1. Verify the transmission line pressures are within the specified range. Refer to Line Pressure Check Line Pressure Check and Solenoid Valve Pressure Solenoid Valve Pressure.
• If the pressures are not within range
Refer to Fluid Pressure High or Low Fluid Pressure High or Low.
• If the pressures are within range
2. Ignition OFF, remove the Q8 Control Solenoid Valve Assembly.
3. Verify the pressure changes for all solenoids when performing the solenoid test. Refer to Control Solenoid Valve and Transmission Control Module Assembly Solenoid Performance Test Control Solenoid Valve and Transmission Control Module Assembly Solenoid Performance Test.
• If the pressure does not change
Replace the Q8 Control Solenoid Valve Assembly.
• If the pressure changes
4. Verify the conditions listed below do not exist. Repair or replace as necessary.
P2714 or P2715 Control Valve Upper Body Assembly
2-6 clutch regulator valve stuck/sticking - debris, binding, damaged valve, or scored bore.
P2714
Actuator feed limit circuit supply fluid to solenoid restricted or not available - debris or sediment blockage.
P2714 or P2715 Channel Plate and Spacer Plate
Oil channels or orifices blocked by debris.
P2714 or P2715 Control Solenoid Valve Assembly
* Clutch pressure control solenoid 4 stuck ON or stuck OFF.
* Control signal fluid supply leak - valve body filter plate assembly cracked or damaged gasket seal.
* Clutch pressure control solenoid 2 stuck OFF.
P2714 or P2715 Automatic Transmission Case Cover
* 2-6 clutch return spring retaining ring not seated in groove.
* 2-6 clutch piston assembly seal damaged or leaking.
* 2-6 clutch plates worn or damaged.
P2714 1-2-3-4 Clutch Plate Assembly
* 1-2-3-4 clutch backing plate retaining ring not seated/oriented correctly.
* 1-2-3-4 clutch piston seals damaged or leaking.
* 1-2-3-4 clutch piston cracked or damaged.
P2714 Automatic Transmission Fluid Pump Assembly
* Fluid pump housing/vanes/rotor/slide damaged/scored.
* A/Trans pump fluid outlet seal assembly damaged/leaking.
P2714 Automatic Transmission Fluid Filter Assembly
Oil filter or filter seal loose or damaged.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the repairs.
* Perform the Reset Transmission Adapts Reset Procedure following all transmission repairs.
* Control Solenoid Valve and Transmission Control Module Assembly Replacement Service and Repair
* Control Valve Lower Body and Upper Body Replacement Control Valve Lower Body and Upper Body Replacement
* Low and Reverse Clutch and 1-2-3-4 Clutch Plate Removal Low and Reverse Clutch and 1-2-3-4 Clutch Plate Removal
* Control Module References Control Module References for control solenoid valve assembly replacement, programming, and setup.