Century Estate Wagon L4-151 2.5L (1985)
Engine Control Module: Service and Repair
PROM or Mem-Cal Replacement
If diagnostic procedures call for replacement of the ECM, first check that the installed PROM or MEM-CAL is the correct part. If it is correct, remove
PROM or MEM-CAL from the defective ECM and install it in the new ECM, as the new ECM will not contain a PROM or MEM-CAL. When
reconnecting power to the ECM, the ignition switch must be off to prevent internal ECM damage.
