The models covered by this guide employ the fourth and fifth generation Electronic Engine Control systems, commonly designated EEC-IV and EEC-V, to manage fuel, ignition and emissions on vehicle engines.
Typically, the EEC-IV systems were used on 1994-95 models and the EEC-V systems were used on 1996-97 models.
The Powertrain Control Module (PCM) detects engine operating and driving conditions, along with the exhaust gas oxygen content. Various switches, sensors and components provide the PCM with information that allows it to control the air/fuel ratio (mixture). The PCM can also control some evaporative emission, ignition and deceleration systems.
The PCM is located underneath the left-hand side of the instrument panel.
REMOVAL & INSTALLATION
- Disconnect the negative battery cable.
- Loosen the three Powertrain Control Module (PCM) nuts.
- If equipped, move the anti-lock brake control module aside, then pull the PCM down until you can gain access to the electrical connectors.
- Grasp the PCM electrical connectors and unplug them from the back of the unit.
- Remove the PCM from under the instrument panel.
- Engage the PCM electrical connectors to the rear of the unit.
- Place the PCM and, if equipped, the anti-lock control module into position.
- Install and tighten the PCM retaining nuts.
- Connect the negative battery cable, start the car and check for proper operation.