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: 121 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. P0577-15: Cruise Control Input Circuit High: Diagnostic fault check for SRC MAX error when analog key detection is enabled Overview: DTC Description (User Friendly) Cruise Control Input Circuit High: Diagnostic fault check for SRC MAX error when analog key detection is enabled. ECU Pin Number K029 – Input analog signal to EMS K033 – Ground signal to cruise button from EMS ECU Customer Symptom MIL OFF, CEL OFF Fault Effects (On Vehicle) - Lamp Status (If Any) - Fault Detection Condition (Root cause) SRC MAX error is detected if the raw signal voltage, CrC_uRaw, exceeds the threshold threshold144 for a duration 50 ms. Normal Operating Condition Proper wire harness connection between Cruise Cncl button and EMS ECU. Probable Trouble Area Wire harness connection between Cruise Cncl button and EMS ECU. Healing Condition Rectify the error Clear through diagnostic tool. Ignition OFF & ON Component Details: Cruise control is a system that automatically controls the speed of a motor vehicle. The system is a servomechanism that takes over the throttle of the car to maintain a steady speed as set by the driver. Preliminary Checks: 1. Check whether the customer voice / view about the issue is matching with the fault effects mentioned in above Table. If yes, go ahead with next steps. If not, check for other DTC’s presence. 2. Check whether other customers report similar complaints earlier. If yes, perform the preliminary checks with respect to earlier issue closure. 3. Check for wire harness connection between EMS and Cruise Cncl button. 4. Check for any back out of pins at EMS ECU connector. 5. Check for any damage of pins at EMS ECU connector. Trouble Shooting:
RkJQdWJsaXNoZXIy MTIwNTUz