Powertrain Control Module (PCM)

Powertrain Control Module (PCM)





The PCM is located under the trills panel on the right-hand A-pillar.

On vehicles with automatic transmissions, the EEC-V PCM controls the transmission in addition to the engine management system. In this case, a module with 104 pins is used.

The PCM evaluates the incoming signals from the individual sensors and actuates the solenoid valves in the valve body of the transmission directly according to the operating state.

Diagnostic checks can be carried out on the transmission through the data link connector (DLC) above the Central Junction Box (CJB).

Emergency operating program
If correct gear shifting can no longer be guaranteed due to failure of certain signals the PCM changes to an emergency operating program.

The driver is informed of the operation of the emergency operating program by the illumination of the powertrain warning indicator in the instrument cluster.

Continued motoring is guaranteed in the following limited conditions:
^ maximum main line pressure.
^ 3rd gear in manual selector lever positions "D" "2" and "1" without the torque converter lock-up clutch.
^ reverse gear in manual selector lever position "R".