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: 431 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. P0300-92: Random / Multiple Cylinder Misfire Detected-Performance or Incorrect Operation Overview: ISO Code P0300-92 Customer Symptom Poor Drivability.Alternate Cylinder cut Off & Vehicle stall Fault Effects (On Vehicle) 1. Poor driveability. 2. Misfire / Backfire. 3. Exhaust heat up. 4. Threat to damage catalytic converter. Lamp Status (If Any) MIL ON after 3 drive cycles Fault Detection Condition This fault gets logged if any of the Cylinder Spark plug misfire is detected randomly. Normal Operating Condition Proper firing by spark plugs and proper fuel injection by Injectors. Probable Trouble Area Injectors/Spark Plugs faulty wiring Harness connections, Clogged Injectors, Faulty Spark Plugs, HT cables, low compressor pressure, improper valve clearance, improper valve timing, Faulty ECT Sensor. Healing Condition Engine Running and 3 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: NA Preliminary Checks: 1. Faulty Wiring Harness connections of Injectors/ Ignition Coil A / Ignition Coil B 2. Clogged Injectors 3. Faulty Ignition Coils/HT Cables 4. Low Compression Pressure 5. Improper valve clearance 6. Improper Valve timing 7. Faulty ECT Sensor