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: 455 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. P0324-4: Knock Control System Error – System Internal Failures Overview: ISO Code P0324-4 Customer Symptom Permanent Ignition Retardation. Knock control is not active, Power loss due to Ignition retardation Fault Effects (On Vehicle) 1. No knock control active. 2. Permanent ignition retardation. 3. Engine damage can happen with bad fuel quality. Lamp Status (If Any) CE lamp ON after 5 drive cycle Fault Detection Condition This fault gets logged if the Knock Control signal pin of EMS ecu is Open Circuited Normal Operating Condition Healthy wiring harness connections between Knock Sensor and EMS ecu Probable Trouble Area Knock Sensor, Knock Sensor Wiring Harness Connections, Healing Condition Engine Running and after 1 drive cycle of fault rectification. Fault present 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: Knock Sensor consists of a piezoelectric element. Piezoelectric elements generate voltage when vibration or pressure is applied to them. The Piezoelectric element in the knock Sensor is tuned to the Engine Knock Frequency. Preliminary Checks: 1. Faulty Knock Sensor 2. Check for P0327 -14, P0328-15-Improper Wiring Harness Connections between Knock Sensor and EMS ECU