P07A5

DTC P07A5

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 Descriptor
DTC P07A5
- Transmission Clutch 2 Stuck On

Circuit/System Description

The hybrid powertrain control module monitors the Clutch Slip parameters for each Hybrid Trans. Mode Commanded state. This DTC detects no clutch slip when the hybrid direct, 2-3-4 clutch is commanded OFF, indicating a stuck or welded clutch condition.

Conditions for Running the DTC

The transmission is in a range where the Hybrid direct, 2-3-4 clutch is expected to be OFF.

Conditions for Setting the DTC

The hybrid powertrain control module detects the hybrid direct, 2-3-4 clutch slip speed is less than 50 RPM for 3 seconds, when commanded OFF.

Action Taken When the DTC Sets

P07A5 is a Type B DTC.

Conditions for Clearing the DTC

P07A5 is a Type B DTC.

Diagnostic Aids

When attempting to set transmission performance DTCs, observe the Freeze Frame and Failure Records to assist in duplicating the failure conditions. Ensure the transmission fluid level is correct and there are no leaks. If there are any other transmission DTCs set, diagnose those first.

Reference Information
Schematic Reference

Automatic Transmission Controls Schematics (2ML70 - Automatic Transmission)
Connector End View Reference

Component Connector End Views (Connector End Views By Name)
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

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 Solenoid Performance Test (Control Solenoid Valve and Transmission Control Module Assembly Solenoid Performance Test).
4. Inspect the hybrid direct, 2-3-4 clutch regulator valve for sticking or damage.

• If you found a concern with the hybrid direct, 2-3-4 clutch regulator valve, repair or replace the valve or valve body.

5. Inspect the hybrid direct, 2-3-4 clutch for a stuck On or damaged condition.

• If you found a hybrid direct, 2-3-4 clutch concern, repair or replace the hybrid direct, 2-3-4 clutch assembly as necessary.

Repair Instructions

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

* Control Valve Assembly Disassemble ()for Valve Body Inspection procedures.
* Control Valve Upper Body Replacement (2ML70 - Automatic Transmission)for Control Valve Body replacement.
* Hybrid Direct, 2-3-4 Clutch Housing Overhaul ()for Hybrid Direct, 2-3-4 Clutch replacement or overhaul.