ELECTRICAL 94 16. PASSIVE ENTRY PASSIVE START (PEPS) The Passive Entry Passive Start (PEPS) system is remote keyless entry application and is available in top end models. Instead of pressing a transmitter button to unlock or lock the car door and using the traditional key to start the vehicle (Active Access Request), PEPS provides enhanced customer convenience and security via a customer carried, passively enabled Smart key/Electronic key/User Identification Device (UID). (Passive Access Request) A valid Smart Key allows access to the vehicle’s passenger compartment, access to the vehicle’s cargo compartment, and use of the vehicle’s Start/Stop switch. The PEPS system is responsible for authenticating the vehicle user through Low Frequency (LF) and Radio Frequency (RF) communication between the vehicle and the Smart Key. Thus Passive Entry Passive Start function is a convenient way to enter and start the vehicle while maintaining a high level of safety and security. When the driver presses a door handle switch carrying a valid smart key (Key Fob), this system checks the smart key information and driver door status and locks/unlocks the doors (passive function). The vehicle can be started when the driver enters the vehicle with valid Smart Key and presses the START/STOP switch (passive start function) by pressing the clutch. The Passive Entry Passive Start (PEPS) system consists mainly of following components: 1. PEPS ECU 2. Smart Key 3. Start Stop Switch 4. Electronic Steering Column Lock (ESCL) 5. Door Handle Switches 6. LF Antennas PRE-CHECKS 1) After performing all the necessary checks as per the troubleshooting guide, at wire harness, switches, relays etc., and if no root cause is found, then follow the below procedure. 2) Connect the diagnostic tool to OBD connector. 3) Wake up PEPS ECU by driver door open or through RKE Command or passive function. 4) Perform DTC checks using diagnostic tool. 5) Check the customer reported fault, whether it is rectified. 6) If the fault is rectified, disconnect the OBD connector and diagnostic tool. If step 5 (above) is NOT OK, i.e. fault is not rectified, follow the replacement procedure given below. Remove the short linking the IGN relay with battery supply if made (at step 3 above).
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