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: 928 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. P2135-62: Synchronization Error between Accelerator Pedal Sensor 1 and 2 – Signal Compare Failure Overview: ISO Code P2135-62 Customer Symptom Vehicle /engine speed will be restricted Fault Effects (On Vehicle) 1. Vehicle runs with speed limitation. Lamp Status (If Any) MIL ON after 1 drive cycle Fault Detection Condition This fault gets logged if plausibility failure is detected between Acc. Pedal position Sensor 1 & 2. This fault gets logged only when vehicle is running. Normal Operating Condition Acc Pedal Position Sensor 1 & 2 gives correct input to EMS ECU. Probable Trouble Area Wiring harness Connections, Pedal Position Sensor 1/2 Faulty, EMS ECU Healing Condition Ignition and after 3 drive cycles of fault rectification Fault permanent deletion 1. Clear DTC Command form Scan tool 2. Stack Over Flow. 3. 40 warm up cycles. 4. ECU Flashing. 5. ECU Power-Fail Component Details: For safety reasons, the accelerator pedal Sensor is equipped with 2 resistors (potentiometers) with varying operating ranges and separate circuits. A potentiometer informally a pot, is a three- terminal resistor with a sliding contact that forms an adjustable voltage divider. If only two terminals are used, one end and the wiper, it acts as a variable resistor or rheostat . Preliminary Checks: 1) Loose/ Damaged Connections between Pedal Sensor 1/2 and EMS ECU. 2) Check for back out of pins at both Pedal Sensor 1/2 connector and ECU connector. 3) Check for damage of pins at both Pedal Sensor 1/2 connector and ECU connector. 4) Check the continuity from Pedal Sensor 1/2 connector pins to the ECU pins. 5) Pedal Sensor 1/2 Faulty 6) EMS ECU faulty