Powertrain Controls - ECM/PCM

Check that all pins are fully inserted in the socket and that PROM is properly latched.

If ok, replace prom, clear memory. and recheck. If DTC 51 reappears, replace ECM.

NOTICE: To prevent possible electrostatic discharge damage to the ECM or prom, do not touch the component leads, and do not remove the PROM cover or the integrated circuit from carrier.