Passive Entry Module - Description

DESCRIPTION





The Passive Entry Module (PEM) (1) is the primary component of the Passive Entry (PE) and Keyless Go (KG) systems. The PEM contains both the Central Processor Unit (CPU) and Controller Area Network (CAN) data bus transceiver of the PE and KG systems, and is sometimes alternately referred to as the PEKG module or receiver. Concealed within the molded black plastic PEM housing is the printed circuit board and the other electronic circuitry of the module.

The PEM is secured by three screws to three tabs equipped with plastic nuts located on the outboard end of the air conditioning and heater unit blower housing beneath the passenger side end of the instrument panel. The PEM includes three integral mounting stanchions (2) and two connector receptacles (3) integral to the PEM housing. The connector receptacles contain all of the terminal pins that connect the PEM to the vehicle electrical system through two dedicated take outs and connectors of the instrument panel wire harness.

There are at least two unique hardware versions of the PEM. These versions are required in order to accommodate the unique data bus systems possibly found in Chrysler vehicles. The PEM used for this platform must be able to communicate with other electronic modules in the vehicle using the CAN-C data bus network. Communication - Description.

The PEM cannot be adjusted or repaired and, if damaged or ineffective, it must be replaced. The PEM software is flash programmable.