TIAGO TIGOR BSVI - SERVICE MANUAL - DTC 24-12-2021

TATA BSVI Gasoline Program – EMS ECU Bosch DTC Troubleshooting Service Manual Version: 1.2 Date: 18-12-2019 Prepared By: Sunita Mandlik Checked By: Yeshwant Jadhav Approved By: Satish Kumar Document Part No: 2921 02 xxx xxxx Page: 308 of 1498 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. Is there any rust/oxidization observed on Sensor Terminals Clean the Rust or repair or replace Go to Step 2 2. Is there wiring harness electrical continuity between ECUpins 111,126, 106 &Accelerator pedal Sensor 2 Sensor connector pins 6,1,5. Go to Step 3 Establish continuity by rectifying harness connections as per the Circuit schematic 3. Are there any pins damaged at Sensor/EMS ECU Connector Replace the connector or wiring harness Go to step 4 4 Are there any pins backed out from the Sensor/EMS ECU Connector Rectify/Replace Connectors Go to Step 5 5 Is Sensor Supply Pin 126 Short Circuited to GND/Battery? Repair the harness as per the schematic Go to step 6 6 Is Sensor Signal Pin111 Short Circuited to Battery. Repair the harness as per the schematic Go to Step 7 7 Is Sensor physically Damaged Replace Sensor Go to Step 8 8 Fault Still Persists? Replcae Sensor and then Fault still persists then Replace EMS ECU Follow the steps again for reconfirmation DTC’s confirmation:- After rectification, ensure the following points by referring engine parameters using TML diagnostic tool before handing over to customer. Press the Accelerator pedal Sensor in incremental steps and check the Vehicle parameter – Accelerator pedal Sensor 2 (in percentage) is varying incrementally.