P1623
NOTE: After completing diagnosis and repair, clear stored ABS/TCS DTC 75.Check that PROM is correctly installed in the socket. If OK, replace PORM, clear memory and re-check. If DTC P1623 reappears, replace PCM.
CAUTION: To prevent possible electrostatic discharge damage to the PCM or PROM, do not touch the component leads. Do not remove intgrated circuit from carrier.