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: 77 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. Trouble Shooting: Step Checks IF YES IF NO 1. Read IVN DTCs in ECM. Is MTO logged against ABS in ECM in current state? 1. Check continuity between ECM CAN_H to ABS CAN_H and ECM CAN_L to ABS CAN_L in vehicle wiring side connector. 2. Check ABS ECU fuses (Battery fuse 25A, Ignition fuse 5A) blown. 3. Also, check ABS ECU is powered up properly. ABS Battery, IGN and GND connected properly with ABS ECU. Go to step 2. Clear DTC. 2. Is continuity there? Check the resistance between ECM CANH and ECM CANL of ECM connector in vehicle wiring harness.(with 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 Repair the wiring harness. Clear DTC 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):
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