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: 100 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. Step Checks IF YES IF NO 1. Read IVN DTCs in ECM. Is MTO logged against IPC in ECM in current state? 1. Check continuity between ECM CAN_H to IPC CAN_H and ECM CAN_L to IPC CAN_L in vehicle wiring side connector. 2. Check IPC ECU fuse blown. 3. Also, check IPC ECU is powered up properly. IPC Battery, IGN and GND connected properly with IPC ECU. Clear DTC. 2. Is continuity there? Check the resistance between ECM CANH and ECM CANL of ECM connector in vehicle wiring harness. (IPC connected on the vehicle) Go to step 3. Repair the wiring harness if continuity is not there.Clear DTC. 3. Is Resistance R = 120 ohm? Clear DTC. Check continuity between ECM CAN_H to IPC CAN_H and ECM CAN_L to IPC CAN_L. Go to step 4. 4. If fault still persists. then replace sensor and if fault still persists then call Hotline. Follow the above procedure again for Reconfirmation. DTC’s confirmation (checks before handing over vehicle to customer): 1. Check the errors at Ignition ON, engine running @ Idle & Fly-up with different vehicle speeds also. 2. If error present, then rectify the errors. 3. Confirm that there is no error logged in EMS before handing over vehicle to customer.
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