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: 993 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. P2299-94: Brake Pedal Position/Accelerator Pedal Position Incompatible– Unexpected Operation Overview: ISO Code P2299-94 Customer Symptom 1. Engine restricted performance 2. No response from accelerator pedal Fault Effects (On Vehicle) 1. Limp home activated 2. No pedal response Lamp Status (If Any) CE Lamp ON after 3 drive cycle Fault Detection Condition 1. This DTC gets logged due to accelerator pedal & brake pedal are pressed when the vehicle is more than a calibrated value for a specified length of time. 2. Brake pedal setting is not correct Normal Operating Condition No vehicle acceleration when Accelerator pedal and brake pedal are jointly pressed Probable Trouble Area Brake switch, EMS ECU, Accelerator pedal, Grounding points, Wiring harness connections btw Brake switches and EMS ECU, Wiring harness connections btw Accelerator Pedal sensor and EMS ECU Healing Condition After 1 Drive cycles 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: Accelerator pedal sensor: For safety reasons, the accelerator pedal sensor is equipped with 2 resistors (potentiometers) with varying operating ranges (0.75 – 4.45 V and 0.38 – 2.23 V) 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. Based on the Accelerator pedal position, Engine will produce the driver demanded torque based on the accelerator pedal position. Brake Switches: For safety reasons, Brake pedal is equipped with two Switches. These switches transition their states when the brake pedal is pressed. EMS ecu uses the brake press information in its control strategies like Torque demand calculation, Gear Shift indication, Accelerator pedal stuck detection, vehicle start function when clutch sensor fails etc.,