Mahindra Bolero 2021 User manual

© 2011 Mahindra & Mahindra Ltd. All rights reserved. This book may not be reproduced or copied, in whole or in part, without
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 [e-mail]
© 2011 Mahindra & Mahindra Ltd. All rights reserved. This book may not be reproduced or copied, in whole or in part, without the
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.