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Component Description: Pcm/TCM

NOTE: Models with gasoline engines use a Powertrain Control Module (PCM) computer. Models with diesel engines use a Transmission Control Module (TCM) computer. These computers control TCC, force motor (hydraulic pressure) and shifting solenoids "A" and "B".

The PCM/TCM is located behind glove box on all vehicles except "G" Series. On "G" Series, PCM/TCM is under driver's seat. PCM/TCM controls TCC, force motor (hydraulic pressure) and shifting solenoids "A" and "B". In addition, PCM also controls ignition, fuel and emission devices related to the engine.

The PCM/TCM receives electronic signals from sensors and switches. These signals help the PCM/TCM determine when to operate various relays and solenoids related to engine and transmission components.

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