Q501 4 Cylinder MT Application DTC Troubleshooting Data Version: 0.1 Date: 21-Sep-2018 Prepared By: Mithi Prasad, Sarang Kulkarni, Manish Gupta Checked By: Yogesh Jadhav Approved By: Satish Kumar P Page: 130 of 1052 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. P0525-96: Cruise control disabling due to level 2 monitoring of driver assistance system (system internal failures) Overview: DTC Description as per ISO standard Cruise control disabling due to level 2 monitoring of driver assistance system - Component Internal Failure ECU Pin Number - Customer Symptom - Fault Effects (On Vehicle) - Lamp Status (If Any) OFF Fault Detection Condition (Root cause) Ignition ON Normal Operating Condition Fault condition no more present Probable Trouble Area EMS ECU. Healing Condition 1. Check functionality of cruise control and ACC first. 2. Run the diagnostic procedures to check the ECU Power & ground. 3. Check the integrity of the PINs of the ECU, if the fault still occurs, replace the ECU and reprogram the controller Component Details: EMS ECU is an electronic controller which controls the Engine functionality by interfacing with various sensors, actuators And other controllers (via CAN). Preliminary Checks: 1. Check whether the customer voice / view about the issue is matching with the fault effects mentioned above. 2. If yes, go ahead with next steps. If not, check for other DTC’s presence. 3. Check whether similar complaints are earlier reported. If yes, perform the preliminary checks with respect to 4. Earlier issue closure. Check for pin back out at EMS ecu connector or EGR valve connector. 5. Check whether the EMS is receiving Battery supply and Ground 6. Check whether the Battery is healthy.
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