Mahindra Bolero 2021 User manual

the written permission of Mahindra & Mahindra Ltd.

DIAGNOSTIC MANUAL - CAN

MAN-00146

www.teknetmahindra.com

ALL INFORMATION CONTAINED IN THIS MANUAL IS MOST UP-TO-DATE AT THE TIME OF PUBLICATION.

HOWEVER, SPECIFICATIONS AND PROCEDURES ARE SUBJECT TO CHANGE WITHOUT NOTICE. THIS

MANUAL IS STRICTLY MEANT FOR RESTRICTED INTERNAL CIRCULATION WITHIN M&M AUTHORIZED

DEALER SERVICE CENTERS.

RELEASED BY –

TECHNICAL PUBLICATION CELL

MAHINDRA & MAHINDRA LTD.

Rev1 – SEPT. 2011

ABOUT THE CAN DIAGNOSTIC MANUAL

The CAN diagnostic manual outlines the detailed procedures to troubleshoot complaints related to the CAN

SUPPORT system fitted on Mahindra BOLERO m2DiCrSle/Slx/Zlx vehicles.

This manual covers –

•Retrieving DTCs from ECU and/or IC, analyzing the complaint and taking corrective action.

In spite of our best efforts to make the manual error-free, a few errors could have inadvertently crept in. If you identify

errors, functional or typographical, please inform your TEKline or pillay.ajay@mahindra.com

written permission of Mahindra & Mahindra Ltd.

. Suggestions to improve the

manual and make it more user-friendly are also welcome.

Diagnostic Manual (CAN) MAN-00XXX-3

Bolero m2DiCR

SEP 2011/Rev 1

All copyrights reserved by

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 or whole of the

present document, are prohibited without the prior written consent of Mahindra & Mahindra Ltd.

Contents

oHow to use this manual

oOverview of in-vehicle communication network

oRecommended troubleshooting process

oWarranty/Other information

oDo and Don’ts during troubleshooting process

oIndex of DTC codes

oTroubleshooting Chart

oCluster Details

oResistance Check Chart

Diagnostic Manual (CAN) MAN-00XXX-4

Bolero m2DiCR

SEP 2011/Rev 1

All copyrights reserved by

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 or whole of the

present document, are prohibited without the prior written consent of Mahindra & Mahindra Ltd.

How to Use this manual

If the DTC code is known, then go to the Index of DTC code, and click on the DTC. The DTCs

are hyperlinked to the respective trouble shooting chart/pages.

The following is the structure of the Diagnostic Manual –

•Possible defect codes related to that Controller.

•Trouble shooting process

Always use the diagnostic manual along with the vehicle’s wiring manual (MAN-00140).

The Diagnostic tester has the ability to test certain actuators.

For Immobilizer related errors, the DTCs in the Engine EMS and along with that the DTCs in

the Immobilizer ECU (ICU) need to be analyzed together. Refer to the Diagnostic Manual

(Immobilizer) MAN-00142 for details. The possible causes and corrective action are to be

taken based on the combination of the codes.

Diagnostic Manual (CAN) MAN-00140-5

Bolero m2DiCR

SEP 2011/Rev 1

All copyrights reserved by

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 or whole of the present document, are prohibited without the prior written consent of Mahindra & Mahindra Ltd.

Overview of the in-vehicle communication network

Diagnostic Manual (CAN) MAN-00XXX-6

Bolero m2DiCR

SEP 2011/Rev 1

All copyrights reserved by

The repair methods given by the manufacturer in this document are based on the technical specifications c urrent 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 or whole of the

present document, are prohibited without the prior written c onsent of Mahindra & Mahindra Ltd.

Recommended Trouble Shooting Process

Customer complaint

Record/Understand Customer Verbatim

• What happened?

• When it happened?

• What was the event before that?

• Does it happen all the time?

• Does it happen only in some condition?

Search for Published quick solution in TEKnet.

Follow DTC based diagnosis

Contact TEKliner with TAR

(Technical Assistance Request)

Diagnostic Manual (CAN) MAN-00XXX-7

Bolero m2DiCR

SEP 2011/Rev 1

All copyrights reserved by

The repair methods given by the manufacturer in this document are based on the technical specifications c urrent 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 or whole of the

present document, are prohibited without the prior written c onsent of Mahindra & Mahindra Ltd.

DO’s and Don’ts in CAN Diagnosis:

Service Troubleshooting at Vehicle

DO's DON’T's

Resistance /

Continuity check

Battery to be disconnected

Do not check when battery is

connected

All ECU's should be connected Do not test at ECU level

Multimeter to be used to check

resistance -----

Multimeter to be used to check

continuity

Do not use lamp method to check

continuity

Check at interconnector or OBD

connector Do not hamper twisted CAN wires

Unlock the connector lock, then

pull using connector

Do not pull wiring harness when

disconnecting inter connector

When connecting connectors,

hold connectors and put them

together until they lock securely

Do not hold wiring for connecting

the inter connector

Wiring Issues

Follow CAN standard wiring

harness

Do not connect CAN terminal

using bypass wire, otherwise the

CAN lines may be influenced by

the electrical noise.

Change complete wiring Do not replace only CAN wiring

When installing the wiring

harness fix it with clamps

Do not leave loose / hanging

wires. Excessively loosed CAN

lines may be influenced by the

electrical noise.

After replacing check continuity Do not connect Battery before

ensuring continuity

After replacing check Resistance Do not connect Battery before

ensuring Resistance

Diagnostic Manual (CAN) MAN-00XXX-8

Bolero m2DiCR

SEP 2011/Rev 1

All copyrights reserved by

The repair methods given by the manufacturer in this document are based on the technical specifications c urrent 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 or whole of the

present document, are prohibited without the prior written c onsent of Mahindra & Mahindra Ltd.

Index of DTCs

Error Codes in EMS

Code Label

U1105 IC Node Absent

U1005 IC Message Time-Out

U1405 IC Message Content Failure

U1117 IMMO Node Absent

U1201 EMS Bus-Off

P0650 MIL Telltale Faulty

P1658 Check Engine Telltale Faulty

Error Codes in IC

Code Label

U1101 EMS Node Absent

U1001 EMS Message Time-Out

U1401 EMS Message Content Failure

U1117 IMMO Node Absent

U1417 IMMO Message Content Failure

U1205 IC Bus-Off

B0120 CAN Overvoltage

B0121 CAN Under voltage

B0129 Glow plug Tell Tale faulty

B0127 MIL Telltale Faulty

B0128 Check Engine Telltale Faulty

Diagnostic Manual (CAN) MAN-00XXX-9

Bolero m2DiCR

SEP 2011/Rev 1

All copyrights reserved by

The repair methods given by the manufacturer in this document are based on the technical specifications c urrent 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 or whole of the

present document, are prohibited without the prior written c onsent of Mahindra & Mahindra Ltd.

Code Description

U1105 IC Node Absent

NODES at which the error codes are present:

• EMS

Probable cause:

• IC ECU not connected in the vehicle.

• CAN_H Open in wiring harness.

• CAN_L Open in wiring harness.

• CAN_H short with CAN_L

• CAN_H short with +ve or GND

• CAN_L short with +ve or GND

• Permanent failure in IC ECU.

Cluster Display: No.

Effect:

• No CAN communication between EMS and IC

• Environmental data stored will DTC will be previous received valid value.

Corrective Action:

• Check if IC ECU is connected properly in the vehicle.

• Measure resistance in CAN wiring to detect CAN wire failure. For procedure

of checking – Click here.

• Replace wiring harness.

• Replace the IC ECU.

Diagnostic Manual (CAN) MAN-00XXX-10

Bolero m2DiCR

SEP 2011/Rev 1

All copyrights reserved by

The repair methods given by the manufacturer in this document are based on the technical specifications c urrent 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 or whole of the

present document, are prohibited without the prior written c onsent of Mahindra & Mahindra Ltd.

Code Description

U1005 IC Message Time-Out

NODES at which the error codes are present:

• EMS

Probable cause:

• CAN_H Open in wiring harness.

• CAN_L Open in wiring harness.

• CAN_H short with CAN_L

• CAN_H short with +ve or GND

• CAN_L short with +ve or GND

• Failure in IC ECU.

Cluster Display: No.

Effect:

• Partial CAN Communication between EMS and IC.

Corrective Action:

• Measure resistance in CAN wiring to detect CAN wire failure. For procedure

of checking – Click here.

• Repair or replace wiring harness.

• Replace the IC ECU.

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