Vehicle Platform: NEXON, X4, Q5, TIGOR_MCE ECU Name: PEPS DTC Troubleshooting Data Version: 1.8 Date: 28 Feb 2023 Author: Rajasekhara Reddy Page: 326 of 407 Copyright © TATA MOTORS Ltd. This document must not be used in any way, such as copying and redistributing to third parties, without the consent of author. Component Location & Image:- N.A Connector Location:- N.A Connector View & Information:- N.A Inspection Method:- NA U1637 - 61:- PEPS remote (RESS) PreCheck failure – Signal calculation failure Overview:- ISO Code (DTC Code) U1637 – 61 Customer Symptom Failure of Remote Engine Start/stop feature will cause inconvenience. Fault Effects (On Vehicle) RESS feature activation request will be terminated Lamp Status (If Any) NA Fault Detection Condition At PEPS Clamp state = ACC, PEPS checks the transmitted PEPSRemoteCheck signal over CAN as status of RESS feature pre-condition check in 3 consecutive frames with data of PEPSRemoteCheck = "Failed" and "ESCL failure detected or Voltage below threshold (Defined in Par_RESSBattLowThreshold)", this DTC is SET and the counter increments to 7Fh Normal Operating Condition 1. OFF (Reduced CAN communication) 2. ACC ON (Reduced CAN communication) Probable Trouble Area PEPS PreCheck condition failure for supporting Remote Engine Start/Stop feature Healing Condition At PEPS Clamp state = OFF/ ACC, PEPS checks the transmitted PEPSRemoteCheck signal over CAN as status of RESS feature pre-condition check in 3 consecutive frames with
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