Automatic Transmission - MVD 5 Speed
DTC P0741, P2769, or P2770
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 P0741
- Torque Converter Clutch Solenoid Performance (Shift Solenoid Valve DSL)
DTC P2769
- Torque Converter Clutch Solenoid Circuit Low (Shift Solenoid Valve DSL)
DTC P2770
- Torque Converter Clutch Solenoid Circuit High (Shift Solenoid Valve DSL)
Diagnostic Fault Information
Circuit/System Description
The powertrain control module (PCM) provides a B+ control circuit to the shift solenoid valve DSL. The ground circuit for the shift solenoid DSL is provided through the body of the solenoid. The torque converter clutch (TCC) is controlled by the PCM based on both speed sensors, engine RPM, engine load, engine temperature, vehicle speed, transmission temperature, and gear selection. When conditions are appropriate, the PCM request TCC by applying B+ to the shift solenoid valve DSL. When the shift solenoid valve DSL is turned on, it applies transmission oil pressure to the lock-up relay valve and locks the TCC.
Conditions for Running the DTC
The engine is running.
Conditions for Setting the DTC
P0741
* TCC does not occur when driving in a TCC range.
* TCC remains ON in a non TCC range.
* Engine speed is at least 100 RPM greater than the input turbine speed.
* The difference between engine speed and input turbine speed is less than 35 RPMs.
P2769
The PCM detects a short to ground in the control circuit of the shift solenoid valve DSL.
P2770
The PCM detects an open/high resistance in the control circuit of the shift solenoid valve DSL.
Action Taken When the DTC Sets
DTC P0741, P2769 and P2770 are type A DTCs.
Conditions for Clearing the DTC
DTC P0741, P2769 and P2770 are type A DTCs.
Diagnostic Aids
* The battery must be fully charged. Refer to Battery Inspection/Test (Battery Inspection/Test).
* All resistance tests are conducted with the component at 20°C (68°F).
Reference Information
Schematic Reference
Automatic Transmission Controls Schematics (Diagrams)
Connector End View Reference
Component Connector End Views (Connector Views)
Description and Operation
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 (Programming and Relearning)
Circuit/System Verification
Note: If any other DTCs are set, diagnosis them first. Refer to Diagnostic Trouble Code (DTC) List - Vehicle (Diagnostic Trouble Code (DTC) List - Vehicle).
1. Operate the vehicle at 66 km/h (40 mph) with a steady throttle input. Command the TCC ON, with a scan tool, while observing the engine RPM. Lightly depress the brake pedal. The engine speed should increase slightly.
2. Operate the vehicle within the conditions for running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
Circuit/System Testing
1. Ignition OFF, disconnect the transmission X2 harness connector.
2. Test for 11-13 ohm between terminal 10 on the transmission component connector X2 and ground.
• If not within the specified value, test the internal transmission circuits for a short to ground or an open/high resistance. If the circuit tests normal, replace the shift solenoid valve DSL.
3. Ignition OFF, connect the transmission X2 harness connector.
4. Disconnect the PCM harness connector X2.
5. Test for 11-13 ohm between the PCM harness connector X2 terminal 10 and ground.
• If not within the specified value, test the voltage circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the PCM.
6. If all circuits test normal, refer to Symptoms - Automatic Transmission (Symptoms - Automatic Transmission).
Component Testing
1. Ignition OFF, remove the shift solenoid valve DSL.
2. Connect a 10 A fused jumper wire to the terminal of the shift solenoid valve DSL and B+.
3. Connect a second jumper wire to the body of the shift solenoid valve DSL.
4. Momentary connect the other end of the second jumper wire to B-. The solenoid should energize and make a click sound.
• If the solenoid does not energize and click, replace the shift solenoid valve DSL.
5. If all circuits test normal, refer to Symptoms - Automatic Transmission (Symptoms - Automatic Transmission).
Repair Instructions
Perform the Diagnostic Repair Verification (Verification Tests) after completing the repair.
* Control Valve Body Replacement (MVD 5 Speed - Automatic Transmission)
* Powertrain Control Module Replacement (Service and Repair)
* Powertrain Control Module Programming and Setup (Testing and Inspection)