Circuit Description

The PCM internal switch is normally closed when vehicle is not moving. The RKE module remote switch is normally open. When the internal switch is closed, the PCM commands a "low" and the PCM diagnostic feedback should indicate a "low". In this state, when the vehicle symbol button is depressed on the transmitter, a signal is sent to the receiver module to close the remote switch. The PCM diagnostic feedback still detects a "low" due to the voltage drop across the coil. When the remote switch is closed, the coil is energized, and the internal relay switch closes to provide power to the deck lid or liftgate release latch causing it to open.

The PCM internal switch is commanded open when the vehicle is moving. The RKE module, remote switch is normally open. When the internal switch is commanded open, the PCM diagnostic feedback should indicate "high". In this state, when the vehicle symbol button is depressed on the transmitter, a signal is sent to the receiver module to close the remote switch. However, even though the remote switch is closed, the coil never gets energized because the PCM's internal switch remains open when vehicle is moving. Therefore, power never reaches the deck lid or liftgate release latch, causing them to remain closed while vehicle is moving.

DTC will set when the PCM has detected an open or short to ground in the RKE circuit, vehicle is moving, the remote switch is either open or closed, or the PCM switch is commanded "high" (open) but the diagnostic feedback indicates a "low" (closed).