P0762

DTC P0762

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

DTC Descriptor
DTC P0762 Shift Solenoid (SS) 3 Valve Performance - Stuck On

Circuit/System Description
The transmission control module (TCM) controls the 1-2, 2-3, reverse shift solenoid valve with an internal driver that pulls the solenoid control circuit to high.

Conditions for Running the DTC
^ No Throttle Position (TP) Sensor DTC P0120
^ No Transmission Range (TR) Switch DTC's P0706, P0707, or P0708
^ No Transmission Fluid Temperature (TFT) Sensor DTCs P0711, P0712, or P0713
^ No Speed Sensor DTC's P0717, P0722, P0727
^ No Pressure Control (PC) Solenoid DTCs P0962, P0963, P0966, P0967, P0970, or P0971
^ No Shift Solenoid (SS) Control Circuit DTC's P0973, P0974, P0976, P0977, P0979, P0980, P0982, P0983, P0985, or P0986
^ No Transmission Torque Delivered Circuit DTC P2637
^ No Communications DTC's U0100 or U2104 output speed greater than one half that of the input speed
^ Input speed is greater than 400 RPM
^ Transmission fluid temperature (TFT) is greater than 20°C
^ Engine speed is greater than 400 RPM
^ Throttle position greater than 10%
^ Shift range equals D, M, or L for at least 2 seconds
^ Ignition voltage is greater than 10.5 volts

Conditions for Setting the DTC
4th gear commanded and the current ratio is within 1.87: 1 - 2.02: 1 for 12 seconds or 5th gear commanded and the current ratio is within 1.44: 1 - 1.56:1 for 12 seconds

Action Taken When the DTC Sets
1. The transmission will operate in 3rd gear in D range
2. Limit engine torque to 150 Nm

Conditions for Clearing the DTC
DTC P0762 is a Type A DTC

Diagnostic Aids
Improper transmission fluid level may cause DTC P0742 to set.

Circuit/System Verification
1. Ignition ON, observe the DTC information with a scan tool.
2. Record Freeze Frame and Failure Records.
3. Clear DTC's.
4. Operate the vehicle under the conditions observed in the Failure Records.
5. Observe the DTC information with the scan tool. Verify that the DTC does not set.

Circuit/System Testing
1. Using a scan tool, command shift solenoid 3 ON and OFF. The solenoid should click when commanded.
> If the solenoid does not click, replace the 1-2, 2-3, reverse shift solenoid valve assembly.
2. Perform a line pressure test.
3. Remove the Control valve body cover.
4. Inspect the inside of the control valve body cover for excessive sediment. There should not be excessive sediment.
> If excessive sediment is found inspect and replace as necessary the 4-5 clutch, and the second clutch. If all conditions test normal, test or replace the transmission.
5. Inspect the control valve body assembly for the following conditions. The conditions should not be found.
^ Torn or missing 1-2, 2-3, reverse shift solenoid valve assembly O-ring seal
^ Stuck U2 shift valve.
> If any of the above conditions are found, repair or replace the valve body assembly. If all circuits and components test normal, replace the transmission.
6. Verify that the control valve body has been serviced within the past 3 months.
> If the control valve body has not been serviced, test or replace the control valve body assembly.
> If all circuits and components test normal, replace the transmission.

Repair Instructions
perform the [Diagnostic Repair Verification - Vehicle Diagnostic Information] after completing the diagnostic procedure.