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: 1044 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. P3018-04: No response is received from ICU – System Internal Failures Overview: ISO Code P3018-04 Customer Symptom Vehicle will not start Fault Effects (On Vehicle) EMS ecu will disable starter motor and Fuel supply for injection Lamp Status (If Any) Immo Lamp ON Fault Detection Condition This fault gets logged when EMS doesn’t get any response CAN signal from Immobilizer. Normal Operating Condition Healthy communication btw EMS and ICU Probable Trouble Area Wiring harness connections of Immo Healing Condition After 1 drive cycle of fault rectification Fault Permanent deletion Stack Over flow After 40 drive cycles Diagnostic command to clear DTC’s Component Details: Immobilizer system is designed to prevent vehicle theft by electronically disabling the engine starting system. The engine can be started only with vehicle’s original immobilizer ignition key, which has an electronic identification programmed code. Immobilizer unit (VICM) is an add-on part on the ignition switch, fitted on the steering column. The engine can be started only with the vehicle’s original immobilizer ignition key. The electronic key communicates the identification code to immobilizer (VICM) when the key is turned to the "Ignition ON" position. Immobilizer comes with two Electronic keys (E-key) Preliminary Checks: 1. Check whether the CAN H and CAN L connections to Immobilizer are as per the schematic. 2. Check whether the Imo is getting Battery power supply.