Circuit Description

PCM has the capability of running a "Customer Snap Shot" function to aid in diagnosing intermittent problems. With this feature, the technician has the ability to capture engine general information parameters when experiencing driveability concerns to aid in diagnosis. If vehicle is equipped with cruise control, activation of the function is accomplished simply by toggling the on/off cruise control switch 3 times within 3 seconds. The PCM looks for 3 transitions either off or on within 3 seconds to capture the data. The PCM then sets DTC P1624 and information is stored in the malfunction history. The malfunction history can be accessed using a scan tool. The PCM will only allow one snap shot per ignition cycle.