LV ELECTRICAL SYSTEM 118 23 PASSIVE ENTRY PASSIVE START(PEPS) 23.1 PEPS ECU The PEPS ECU is the central control unit of the PEPS system that contains the electronics necessary to facilitate generation and transmission of LF challenges and receive RF response signal coming from Smart Key, CANbus communications, Immobilizer function and clamp (ACC,IGN,CRANK output) control functionality. PEPS ECU has the following main tasks: 1. Provide the LF communication link to communicate from the vehicle to Smart Key (Communication via LF antennas). 2. Read the Start Stop Switch to initiate the passive Start and stop process, 3. Interpret the lock and unlock signal from door handle switches to start the Passive Entry and Exit process. 4. The other tasks of the PEPS ECU can include the RF receiver function, the communication with the BCM and the other ECUs of the vehicle and diagnostics functions. A. REMOVAL 1. Disconnect the battery. 2. Access the PEPS ECU from the leg space at the co-passenger side. 3. Disconnect the electrical connection to the ECU. 4. Remove the four mounting screw and take out the ECU unit. REFITMENT Follow the removal process in reverse.
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