2010 Cadillac CTS Sedan AWD V6-3.6L Page 825
DTC P06AC, P06AD, or P06AE
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P06AC
- Transmission Control Module (TCM) Power Up Temperature Sensor Performance
DTC P06AD
- Transmission Control Module (TCM) Power Up Temperature Sensor Circuit Low Voltage
DTC P06AE
- Transmission Control Module (TCM) 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 parts. 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 and also to protect the control solenoid valve assembly and TCM. This fault is handled
inside the TCM and no external circuits are involved.
Conditions for Running the DTC
P06AC
* DTCs P06AC, P0716, P0717, P0722, or P0723 are not set.
* The engine speed is 500 RPM or greater for 5 seconds.
* The ignition voltage is 8.6 volts or greater.
* The TCM power up temperature is between -40 and +150掳C (-40 and +302掳F).
P06AD
* DTCs P06AD, P0716, P0717, P0722, or P0723 are not set.
* The transmission output shaft speed is 200 RPM or greater for 4 minutes.
* The torque converter clutch (TCC) slip speed is 120 RPM or greater for 4 minutes.
* The engine speed is 500 RPM or greater for 5 seconds.
* The ignition voltage is 8.6 volts or greater.
P06AE
* The engine speed is 500 RPM or greater for 5 seconds.
* The ignition voltage is 8.6 volts or greater.
* DTC P06AE has not failed set this ignition.
Conditions for Setting the DTC
P06AC - Condition 1
* Vehicle speed is greater than 8 km/h (5 mph) for 5 minutes.
* TCC slip speed is greater than 150 RPM for 5 minutes.
* The TCM power up temperature is between -40 and +150掳C (-40 and +302掳F).
* The TCM power up temperature has changed by less than 2掳C (3.6掳F) in 100 seconds.
* The transmission fluid temperature (TFT) is 70掳C (158掳F) or greater.
* The TFT has increased by 55掳C (99掳F) since start-up.
Condition 2
* Vehicle speed is 8 km/h (5 mph) or greater for 300 seconds cumulative.
* TCC slip speed is greater than 120 RPM for 300 seconds cumulative.
* The TCM temperature sensor is between 120-150掳C (248-302掳F).
* The TCM power up temperature has changed by less than 2掳C (3.6掳F) in 2 minutes.
* The TFT is 70掳C (158掳F) or greater.
* The TFT has increased by 55掳C (99掳F) since start-up.
