HARRIER BOOK 2

Immobilizer –DTC Troubleshooting Data

Version: 1.

Date:

03-June-2014

Prepared Author

Sarang K/Mithipati P

Review & approved by

: R A Rode (ERC-E&E)

Page: 63 of 67

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.

U1614 - 62:-

Odometer Storage Fault- Signal Compare Failure

Overview:

ISO Code

U1614 -62

Customer Symptom

No Impact

Fault Effects (On Vehicle)

No effect

Lamp Status (If Any)

None

Fault Detection Condition

VICM monitors odo value after ignition OFF

Normal Operating Condition

No fault in immobilizer

Probable Trouble Area

Instrument cluster faulty

Healing Condition

N/A

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 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 ICU when the key is turned to the "Ignition ON" position.

Preliminary Checks:

Trouble Shooting:

Step Checks

IF YES

IF NO

Check instrument cluster supply connection.

Rectify fault

Go to next step

Replace instrument cluster

DTC’s confirmation:-

After rectification, ensure the following points before handing over the system to the customer

1) Battery Voltage is between 9 to 16V.

2) Replacement of ECU.

3) Drive the vehicle on road and check the assistance.

Circuit Schematic Diagram:-