Diagnostic Note

Self Diagnosis Function
The Transmission Control Module (TCM) monitors the communication status of each sensor, electronic component and the Powertrain Control Module (PCM). If any malfunction should occur, the TCM function warns the driver and stores the malfunction as a diagnosis code.

Fail-Safe
With the fail-safe function, if any malfunction should occur in the automatic transmission system, the TCM will output a control signal, and control will be carried out to make traveling a minimum distance possible. If all shift solenoids malfunction, the TCM will cancel the output of control signals to the solenoids. If this happens, the automatic transmission gear shifting will be controlled by fluid pressure circuits only and the gears will shift as shown in the following table.





Shifter Position Gear Position