B2F4A-00 - Negative Acknowledgement - Mahindra XUV700 2021 Diagnostic Manual

Table of Contents

Diagnostic Manual

XUV700 (Diesel)

13.10 B2F4A–00 — NEGATIVE ACKNOWLEDGEMENT

13.10.1 NEGATIVE ACKNOWLEDGEMENT TO EMS ECU

EMS ECU, UICU and the transponder key. All the three components authenticate with each

other during every ignition cycle. Either one of it failed to authenticate or absent, will result in

immobilization of vehicle

DTC Description

Immobilizer

Authentication Failed

—

DTC INFORMATION

NORMAL OPERATION

• Ignition ON

• After successful security authentication, vehicle starts

normally

DTC DETECTING CONDITIONS

•

This

combination

acknowledgement received from the EMS ECU to

UICU during authentication is not as expected

DTC REACTIONS

• Immobilizer check lamp: OFF

• Engine check lamp: BLINKS

• Starter will engage, but vehicle will not start

HEALING CONDITION

• Ignition OFF/ON

• Fault not present

The repair methods given by the manufacturer in this document are based on the technical specifications, current at the time of release. The methods may be modified as a result of changes introduced by

the manufacturer in the production of the various component units and accessories from which the vehicles are manufactured. The reproduction, translation, transmission, in part of or whole of the present

document, are prohibited without the prior written consent of Mahindra & Mahindra Ltd. The use of this document by any person other than the trained personnel, at the Authorized Service Centre of

EMS ECU

B2FFF—00

—

registered

when

UICU

B2F4A—00

B2F45—00

PROBABLE CAUSES OF

the

• Disturbance in CAN circuit

• Disturbance in power and ground