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| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
TCM Temperature Sensor | P06AD | P06AE | P06AE | P06AC |
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.
| • | 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. |
| • | The throttle position signal is valid. |
| • | The engine speed is 400 RPM or greater for 5 seconds. |
| • | The ignition voltage is 9.0 volts or greater. |
| • | The engine torque signal is valid. |
| • | DTC P06AD, P0716, P0717, P0722, or P0723 is not set. |
| • | The engine speed is 400 RPM or greater for 5 seconds. |
| • | The ignition voltage is 9.0 volts or greater. |
| • | The engine speed is 400 RPM or greater for 5 seconds. |
| • | The ignition voltage is 9.0 volts or greater. |
| • | DTC P06AE is not set. |
| • | The difference between the transmission fluid temperature (TFT) and TCM power up temperature is greater than 20-50°C (36-90°F), depending on the average of the TFT, TCM substrate, and TCM power up temperatures. |
| • | The difference between the TCM power up temperature and TCM substrate temperature is greater than 8-10°C (14-18°F) depending on the average of the TFT, TCM substrate, and TCM power up temperatures. |
| • | The above conditions have to be met for 5 minutes within a 6 minute period. |
The TCM power up temperature is -254°C (-425°F) or less for 1 minute.
The TCM power up temperature is 254°C (489°F) or greater for 1 minute.
| • | DTCs P06AC, P06AD, and P06AE are Type B DTCs. |
| • | The TCM defaults the TCM power up temperature to the TCM substrate temperature. |
DTCs P06AC, P06AD, and P06AE are Type B DTCs.
During a road test, the TCM Power-Up temperature should steadily increase to a normal operating temperature, and then stabilise.
Automatic Transmission Controls Schematics
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Control Module References for scan tool information
| ⇒ | If the DTC resets, replace the Q8 control solenoid valve assembly. Refer to Control Solenoid Valve and Transmission Control Module Assembly Replacement . |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| Note: Before replacing the TCM, perform the Control Solenoid Valve and Transmission Control Module Assembly Inspection . |
| • | Refer to Control Module References for control solenoid valve assembly replacement, set-up, and programming. |
| • | Perform the Transmission Adaptive Values Learn following all transmission related repairs. |
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