Medallion L4-2165cc 2.2L (1988)
Powertrain Control Module: Service and Repair
The ECU is contained in a splash-proof housing in the engine compartment on the left inner fender by the shock tower.
1.
Remove wing nut, then the splash-proof housing.
2. Pull back on retaining clip, then open inner housing door.
3. Disconnect electrical connector from ECU, then remove attaching nuts and the control unit.
4. Reverse procedure to install.
