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Nexon Gasoline – EMS ECU Bosch
DTC Troubleshooting Manual
Version: 0.1
Date: 26-08-2017
Prepared By: Sunu S Babu/Yogesh Jadhav
Checked By: Yeshwant Jadhav
Approved By: Satish Kumar
Document Part No: 2921 02 224 A1736
Page: 479 of 1203
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