2ML70 - Automatic Transmission
DTC P0965-P0967
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 P0965
- Pressure Control (PC) Solenoid 2 System Performance
DTC P0966
- Pressure Control (PC) Solenoid 2 Control Circuit Low Voltage
DTC P0967
- Pressure Control (PC) Solenoid 2 Control Circuit High Voltage
Diagnostic Fault Information
Typical Scan Tool Data
Circuit/System Description
The clutch pressure control solenoid 2 is part of the control solenoid valve assembly and is not serviced separately. The transmission control module supplies 12 V to the clutch pressure control solenoid 2 on the high side driver 2 circuit. The transmission control module controls the pressure control solenoid 2 through the clutch pressure control solenoid 2 control circuit. The normally high clutch pressure control solenoid 2 flows fluid to the hybrid direct, 2-3-4 clutch and drive motor 2 when commanded ON.
Conditions for Running the DTC
* The engine run time is greater than 5 seconds.
* The vehicle speed is less than 200 km/h (124 mph) for 5 seconds.
* The system voltage is 11-18 V.
Conditions for Setting the DTC
P0965
The transmission control module detects an internal electrical performance malfunction of the clutch pressure control solenoid control circuit when the actual hybrid direct, 2-3-4 clutch pressure does not equal the commanded hybrid direct, 2-3-4 clutch pressure for 5 seconds.
P0966
The transmission control module detects an internal low voltage electrical malfunction of the clutch pressure control solenoid control circuit for 500 milliseconds.
P0967
The transmission control module detects an internal high voltage electrical malfunction of the clutch pressure control solenoid control circuit for 500 milliseconds.
Action Taken When the DTC Sets
* DTC P0965 is a Type B DTC.
* DTCs P0966 and P0967 are Type A DTCs.
* The transmission control module defaults the transmission to a limited shift pattern utilizing 2 forward gears and reverse based on the fault detected.
* The transmission control module commands maximum line pressure.
* The transmission control module freezes transmission adaptive functions.
Conditions for Clearing the DTC
* DTC P0965 is a Type B DTC.
* DTCs P0966 and P0967 are Type A DTCs.
Diagnostic Aids
When attempting to set solenoid electrical DTCs, ensure the transmission control module is warmed up and the transmission is operated long enough to ensure a 3°C (37°F) increase in TCM temperature parameter. This will place the transmission control module under the optimal conditions to test solenoid electrical DTCs.
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. Engine ON, verify the transmission fluid temperature is between 50-80°C (122-176°F).
2. Operate the vehicle long enough to verify at least a 3°C (37°F) rise in TCM temperature parameter, then operate the vehicle in Park for 5 seconds.
3. Engine ON, observe the scan tool Clutch PC 2 Sol. CKT Status parameter. The reading should display OK or Indeterminate.
• If the reading is not within the specified range, replace the Q8 control solenoid valve assembly.
Repair Instructions
Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.
Control Module References (Control Module References)for Control Solenoid Valve Assembly replacement, programming and setup.