P06AC
DTC P06AC, P06AD, or P06AE
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 P06AC
- Control Module Power Up Temperature Sensor Performance
DTC P06AD
- Control Module Power Up Temperature Sensor Circuit Low Voltage
DTC P06AE
- Control Module Power Up Temperature Sensor Circuit High Voltage
Circuit/System Description
The transmission control module (TCM) power up temperature sensor is located inside of the Control Solenoid Valve Assembly which has no serviceable components. The TCM power up temperature sensor provides the temperature of the TCM when the TCM power is on. This temperature reading is used in various shifting and diagnostic routines in the TCM software. This fault is handled inside the TCM and no external circuits are involved.
Conditions for Running the DTC
P06AC
* DTC P0101, P0102, P0103, P0106, P0107, P0108, P0171, P0172, P0174, P0175, P0201, P0202, P0203, P0204, P0205, P0206, P0207, P0208, P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308, P0401, P042E, P0658, P0668, P0669, P06AC, P06AD, P06AE, P0712, P0713, P0716, P0717, P0722, P0723, P0962, P0963, P0966, P0967, P0970, P0971, P215C, P2720, P2721, P2729, or P2730 is not set.
* Throttle position signal is valid.
* Engine speed is 400-7,500 RPM for 5 s.
* Ignition voltage is 9-32 V.
* Engine torque signal is valid.
* DTC runs continuously when the above conditions are met.
P06AD
* DTC P06AD, P0716, P0717, P0722, or P0723 is not set.
* Engine speed is 400-7,500 RPM for 5 s.
* Ignition voltage is 9-32 V.
* DTC runs continuously when the above conditions are met.
P06AE
* DTC P06AE is not set.
* Engine speed is 400-7,500 RPM for 5 s.
* Ignition voltage is 9-32 V.
* DTC runs continuously when the above conditions are met.
Conditions for Setting the DTC
P06AC
* TCM detects a 20-50°C (36-90°F), or greater difference between the transmission fluid temperature and TCM power up temperature, which depends on the average of transmission fluid temperature, TCM substrate temperature, and TCM power up temperature.
* TCM detects an 8-10°C (14-18°F), or greater difference between the TCM substrate temperature and TCM power up temperature, which depends on the average of the transmission fluid temperature, TCM substrate temperature, and TCM power up temperature.
* Above conditions have to be met for 5 min within a 6 min period.
P06AD
TCM power up temperature is -254°C (-425°F) or less for 1 min.
P06AE
TCM power up temperature is 254°C (489°F) or greater for 1 min.
Action Taken When the DTC Sets
* P06AC, P06AD, and P06AE are Type B DTCs.
* TCM defaults the TCM power up temperature to a calculated temperature based on the TCM substrate temperature.
Conditions for Clearing the DTC
P06AC, P06AD, and P06AE are Type B DTCs.
Reference Information
Schematic Reference
Automatic Transmission Controls Schematics Electrical Diagrams
Connector End View Reference
* Component Connector End Views Outside Rearview Mirror - Driver
* 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
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. Ignition ON, clear the DTCs with a scan tool.
2. Operate the vehicle at 64 km/h (40 mph) for 10 min.
3. Verify DTC P06AC, P06AD, or P06AE is not set.
• If any of the DTCs are set
Replace the Q8 Control Solenoid Valve Assembly.
• If none of the DTCs are set
4. 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.
5. Verify the DTC does not set.
• If the DTC sets
Replace the Q8 Control Solenoid Valve Assembly.
• If the DTC does not set
6. All OK.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the repair.
* Perform the Transmission Adaptive Values Learn Transmission Adaptive Values Learn following all transmission repairs.
* Control Module References Control Module References for Control Solenoid Valve Assembly replacement, programming and setup.