Circuit Description

Body Control Module (BCM) produces theft deterrent CRANK relay and fuel enable signal when ignition is ON and proper ignition code voltage value is detected. Powertrain Control Module (PCM) monitors fuel enable signal during crank. If proper signal is present on Class 2 serial data link, PCM enables fuel delivery in order to allow engine to start. If PCM determines that fuel enable signal is not present or incorrect during engine crank, DTC P1629 will set. Engine will not start as long as DTC P1629 is stored.

A history DTC P1629 will clear after 40 consecutive ignition cycles if condition for setting DTC is no longer present. DTC will also clear when scan tool is used to clear DTCs.