Mahindra SCORPIO Vlx User manual

©2009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.

MBFMDIAGNOSTICMANUAL


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www.teknetmahindra.com
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RELEASED BY -
TECHNICAL PUBLICATION CELL
MAHINDRA & MAHINDRA LTD.
Rev1 – OCTOBER 2009
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.
MAN-00068

Vlx



©2009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.

ABOUT THE MBFM DIAGNOSTIC MANUAL
The MBFM(Mahindra Body Function Module) diagnostic manual outlines the detailed procedures to
troubleshoot complaints related to the MBFM unit fitted on Mahindra Scorpio Vlx vehicle. The MBFM
unit controls many functions in the vehicle like lighting, door management, Wiping/Washing, Alarms , Tyre
pressure monitoring etc. Many features can be customized to suit customer’s requirements and
convenience, through the SMART tester.
This manual covers –
•Details of the various functions and features controlled by the MBFM unit.
•MBFM diagnostic tester and its application
•Retrieving DTCs from MBFM, analyzing the complaint and taking corrective action.
These vehicles can be identified by the new Cluster unit design –
Effective VIN - 92H14197 – BSIII 2WD
92K21582 – BSIV 2WD
92J17519 – 4WD


Diagnostic Manual (MBFM) MAN-00068-1
Scorpio
October 2009/Rev 1
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 Authorised Service Centre of Mahindra & Mahindra Ltd., will amount to unauthorized use and shall be liable for
penalty/prosecution© 2009 Mahindra & Mahindra Ltd.
Contents
How to use this manual 2
Functions/ Features - Mahindra Body Function Module (MBFM) 3
Structure of the MBFM – I/O 12
Overview of the in-vehicle communication network 13
Recommended trouble-shooting process 14
Warranty/Other information 15
Customisable features & Configurations 16
Using the MBFM diagnostic tool 17
List of DTC codes 27
Replacing the MBFM unit 91
Remote Learning 91
Tyre Swap 94
TPMS Learning 94

Diagnostic Manual (MBFM) MAN-00068-2
Scorpio
October 2009/Rev 1
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 Authorised Service Centre of Mahindra & Mahindra Ltd., will amount to unauthorized use and shall be liable for
penalty/prosecution© 2009 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 codes are
hyperlinked and the respective page containing the trouble shooting procedure for that DTC will
be displayed.
The following is the structure of the MBFM Diagnostic Manual –
•Brief description about the sensor/Actuator and its functions
•Possible defect codes related to that sensor/actuator
•Normal/Abnormal operating conditions of the sensor/actuator, possible causes and
vehicle/engine reactions
•Related circuit diagram, connectors and wiring plans
•Trouble shooting process
The diagnostic manual should always be used along with the vehicle’s wiring manual - (MAN-
00067).

Diagnostic Manual (MBFM) MAN-00068-3
Scorpio
October 2009/Rev 1
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 Authorised Service Centre of Mahindra & Mahindra Ltd., will amount to unauthorized use and shall be liable for
penalty/prosecution© 2009 Mahindra & Mahindra Ltd.
Functions/Features - Mahindra Body Function Module (MBFM)
Following Feature / Functions are a part of Body Function Module
1. Exterior Lighting
Turn signals/Hazard
Auto Hazard
Auto Light Control - Follow Me Home
Auto Light Control - Lead Me to Car
Auto Light Control – Tunnel Lighting
Fog lamps
2. Interior Lighting
Footstep lamp
Interior courtesy lamps
Key ring illumination
3. Heated Rear Windshield (Rear Demister)
4. Wipers
Front wipe/Wash
Rear Wipe Wash
5. Door Management
Mechanical Lock/Unlock
Remote Lock/Unlock
Panic alarm
Mute/Unmute
Auto Relock
Auto relock on speed
Auto unlock
6. Driver Information & Warnings
7. Theft deterrent system
8. Power Supply
9. Starter & Accessory relay controls
10. Tyre Pressure Monitoring system
11. Communication bus
12. Diagnostics

Diagnostic Manual (MBFM) MAN-00068-4
Scorpio
October 2009/Rev 1
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 Authorised Service Centre of Mahindra & Mahindra Ltd., will amount to unauthorized use and shall be liable for
penalty/prosecution© 2009 Mahindra & Mahindra Ltd.
1. Exterior lighting
Turn Signal and Hazard Lights are controlled by the MBFM.
The respective direction indicator lights are turned ON whenever the combination switch
stalk is moved to indicate a left or right turn.
Pressing the hazard switch will activate all the direction indicators simultaneously. It
functions without the ignition switch being turned ON.
Failure of any one bulb of the direction indicator lights will be indicated as higher than
normal flashing rate of the direction indicator lamps.
Auto-Hazard – If the vehicle’s bonnet (hood) is opened provided the vehicle speed is zero
and the park lamps are ON, the hazard warning lamps will automatically come ON. The
auto hazard will be active for 10 minutes. The hazard lamp can be switched OFF by
pressing the hazard switch to ON and then OFF.
Follow-me-home – The headlamps will come ON for 30 secs , after removing the ignition
key and opening the driver door, in low ambient light conditions/night. This feature is to
help the driver reach home in night or light up a dark garage. The headlamps can be
extended or switched ON/OFF by pressing the Lock button, for the next 30 secs. for a
maximum of 2 mins. This feature, if not desirable, can be deactivated permanently using
the SMART diagnostic tool.
This feature will be activated only if the Auto Light switch is in ON position.
Lead Me to Car - The headlamps will come ON for 30 secs, when the unlock button is
pressed, in low ambient light conditions. This feature is to help the driver reach the vehicle
in dark parking lots or dark garages. The headlamps can be extended or switched ON/OFF
by pressing the unlock button within the first 30 secs, till the one of the door is opened.
This feature, if not desirable, can be deactivated permanently using the SMART diagnostic
tool.
This feature will be activated only if the Auto Light switch is in ON position.
Tunnel Lighting: The headlamps come ON , in low beam , as soon the ambient light falls
below a predetermined rate, like entering in to a tunnel. The headlamp will be
automatically switched OFF as soon the ambient light improves, like leaving a tunnel.
This feature will be activated only if the Auto Light switch is in ON position.
Fog Lamps: The front fog lamps are controlled by the MBFM. The prerequisites are that
the park lamp has to be ON.

Diagnostic Manual (MBFM) MAN-00068-5
Scorpio
October 2009/Rev 1
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 Authorised Service Centre of Mahindra & Mahindra Ltd., will amount to unauthorized use and shall be liable for
penalty/prosecution© 2009 Mahindra & Mahindra Ltd.
. Interior Lighting
The interior lights which are controlled by the MBFM are:
•Foot Step lamp
•Courtesy lamp
•Key ring illumination
The interior lamps will come ON when any door is opened.
The battery saver function of the MBFM will switch off the interior lamps after 5 minutes,
even if the door is open.
The courtesy lights will be turned ON when the vehicle is unlocked using the remote unit
or when any one of the vehicle’s doors are opened. (Only possible when the roof lamp
switch is in Door mode).
The MBFM turns OFF the courtesy lamps by progressively dimming the lamps, when any
of the following occurs:
•20 seconds has elapsed since the last door (including tailgate) was closed.
•When the vehicle is centrally locked after the last door (including tailgate) was
closed .
•The last door (including tailgate) was closed and the ignition is in the Run or Start
position
•All doors (including tailgate) are closed, and the ignition is in the Off or Accessory
position, and a lock (by remote control or mechanical key) is activated
•Battery saver time of 5 min has been completed without any door activity or lock
activity.
Note: If the vehicle odometer < 250 Kms then the battery saver will switch off in 2
minutes.
3. Heated Rear Windshield (Rear Demister)
The heated rear windshield feature heats the rear windshield.
The MBFM controls the relay of the rear defogger. When the switch is pressed first time
then the timer is set for 12 minutes. The MBFM shuts off the demister in 12 min, if the
switch is inadvertently left ON.

Diagnostic Manual (MBFM) MAN-00068-6
Scorpio
October 2009/Rev 1
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 Authorised Service Centre of Mahindra & Mahindra Ltd., will amount to unauthorized use and shall be liable for
penalty/prosecution© 2009 Mahindra & Mahindra Ltd.
4. Wipers
The Front wiping / washing will work if the ignition is in ON position.
If the Auto wipe control switch is ON, then the MBFM will control the front wiper speed
based on the intensity of the rain as sensed by the Rain Light Sensor. The speed as well as
the time between wipes is controlled by the MBFM by manipulating the wiper ON/OFF
relay and wiper High speed relay.
When the Auto wipe switch is ON and if the MBFM detects that the wiper switch/stalk has
been changed manually then the manual request overrides the Auto Mode.
Flick Wipe (Mist) – Pushing the wiper stalk up, operates the wipers. The stalk
returns back to the OFF position.
Low Speed Wiper (LO) – Pushing the stalk down operates the wipers in low speed.
MBFM controls wiper ON relay.
High Speed Wiper (HI) – Pushing the stalk further down below the LO position
operates the wiper in high speed. MBFM controls the both wiper ON/OFF and
wiper High speed relay.
Wash – When the wiper stalk is pulled towards the steering wheel, the front
washer is activated and sprays water on to the windscreen. The wipers will
automatically start wiping the windscreen and continue to wipe 3 times after the
water spray is stopped.
The wiper will again wipe after 5 secs to clear any dribble from the top of the
windscreen
Rear Wiper/Wash operations –
The rear wiper is not controlled by MBFM
Rear Wiper – Turning the rear wiper switch up, operates the rear wiper. This
function is not controlled by MBFM.
Rear Wipe/Wash – Turning the rear wiper switch down and holding in that
position will turn on the water spray. The wipers will automatically start wiping the
tailgate glass and continue to wipe 3 times after the water spray is stopped This
function is not controlled by MBFM.

Diagnostic Manual (MBFM) MAN-00068-7
Scorpio
October 2009/Rev 1
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 Authorised Service Centre of Mahindra & Mahindra Ltd., will amount to unauthorized use and shall be liable for
penalty/prosecution© 2009 Mahindra & Mahindra Ltd.
5. Door Management
The MBFM controls the locking/unlocking of all doors.
Mechanical Lock /Unlock – All the 5 doors will be centrally locked by the MBFM unit when
either the driver door is locked by the mechanical key (from outside) or the driver door is
locked from by the inner door lock handle is pushed (from inside).
Remote Lock /Unlock – All the 5 doors will be centrally locked/unlocked by the MBFM
unit when the doors are locked/unlocked by the RF remote control unit. The lock/unlock
status is indicated by chirps from the vehicles security siren and blinking of direction
indicators.
1 chirp/1 blink – Lock
2 chirp/2 blink – Unlock
5 chirps/5 blink while locking indicates that one of the door(s) could be open or
not closed properly
3 chirps /3 blink while locking indicates that the bonnet could be open or not
closed properly
4 chirps/4 blinks while unlocking indicates that there was intrusion attempt in the
vehicle in the locked state
If ignition is ON and a valid lock/unlock command is received, MBFM will lock/unlock the
doors without any audible or visual feedback.
Panic alarm : Pressing the panic button after 3 seconds will trigger the panic alarm –
Blinking direction indicators and siren. Panic alarm will work in both Ignition ON as well as
Ignition OFF conditions.
Mute/Unmute function: Pressing panic button and then the unlock button, within 3 secs,
will mute the siren. Following the same sequence again will unmute the siren.
Auto Relock – If the vehicle is unlocked by remote and if no action like door
opening/ignition ON is sensed for 45 secs, the MBFM will relock & arm the vehicle.
Auto Lock on speed – The MBFM will lock all the doors, if the vehicle speed reaches 10
Kms/hr.
Auto Unlock – The MBFM will unlock all the doors as soon as the vehicle is stopped and
the Ignition is switched OFF.

Diagnostic Manual (MBFM) MAN-00068-8
Scorpio
October 2009/Rev 1
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 Authorised Service Centre of Mahindra & Mahindra Ltd., will amount to unauthorized use and shall be liable for
penalty/prosecution© 2009 Mahindra & Mahindra Ltd.
6. Driver Information and Warnings
The MBFM gives the following information to the Instrument cluster through LIN
•Driver seatbelt warning
•Brake Fluid Level/Park brake warning
•Engine low oil pressure warning
•Door open warning
•ABS MIL warning
•4WD lamps (4 H or 4 L)
Provides Door open signal to Voice Messaging System (VMS)
Provides Bonnet open signal to Engine ECU
Provides drive mode information (2H, 4L, 4H) to ABS EHCU (in 4WD vehicles)
Audible warnings
a. Driver seat belt
b. Key left in ignition.
Driver Seat belt: If the driver’s seat belt is not bulked there’s a tell tale warning in the
instrument cluster.
Key left in ignition: If the driver has left the key in ignition barrel and opens the door, the
MBFM will give a warning beep for 5 secs.
7. Theft Deterrent Alarms
MBFM provides various alarms related to vehicle security/theft deterrent. The vehicle will
be in “Armed” mode as soon the vehicle is locked using the remote.
Vehicles security alarm is triggered by the MBFM, if any intrusion is detected in an armed
vehicle by the MBFM. Unauthorised intrusion is detected if any door switches get
operated or IGN is turned ON, when the vehicle is in “Armed” mode.
8. Power Supply
Battery voltage is monitored by the MBFM. The MBFM does not operate below 8 Volts
and above 16 volts and hence all features controlled by MBFM will cease to function
under these conditions.
The battery saver feature provides automatic shutoff of the courtesy lamps, foot step
lamps, and park lamp if inadvertently left ON.
The battery saver function will be activated once the Ignition key is turned off.

Diagnostic Manual (MBFM) MAN-00068-9
Scorpio
October 2009/Rev 1
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 Authorised Service Centre of Mahindra & Mahindra Ltd., will amount to unauthorized use and shall be liable for
penalty/prosecution© 2009 Mahindra & Mahindra Ltd.
•Once the battery saver has become ON and after that if any of the door is opened
or closed then battery saver will start operating after that given event and time.
(the timer gets reset to zero)
•The battery saver function will switch off the courtesy lamp and footstep lamps
after 5 minutes and the parking lamps after 30 minutes.
9. Starter Relay & Accessory Relay Controls
Starter Relay control
MBFM controls the Starter Relay under two situations –
1. Input received from the START terminal of the ignition switch
2. Input received from Engine ECU in Stop-Start mode (micro-hybrid mode)
The MBFM inhibits that starter relay and the engine will not crank under the following
conditions -
a. The engine not crank, if the engine speed is above a set speed. This is to avoid the
starter operation when the engine is already running,
b. The engine will not crank if either the gear is not in Neutral position or the clutch
pedal is not fully pressed.
c. The starter will cut off if it is engaged for more than10 seconds continuously.
d. Under attempted theft situation – Locking with remote and opening with key and
attempting to crank.
Accessory Relay control
The MBFM controls the accessory relay under engine cranking conditions. When the
engine is cranked either by Ignition switch or by Engine ECU (micro-hybrid) , the MBFM
will inhibit the accessory relay to reduce all external loads to aid in healthy cranking
10. Tyre Pressure Monitoring System
The Tyre Pressure Monitoring System (TPMS) is controlled by the MBFM. The MBFM
receives information on tyre pressure & temperature from the sensors and communicates
it to the instrument cluster display through LIN.
Sensors (5 nos) transmit pressure and temperature information when vehicle speed
reaches approximately 40 Kms/hr, every 1 minute. However, if there is change in the
temperature/pressure above a predetermined level, the information will be
communicated to the receiver even if the vehicle is stationary.

Diagnostic Manual (MBFM) MAN-00068-10
Scorpio
October 2009/Rev 1
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 Authorised Service Centre of Mahindra & Mahindra Ltd., will amount to unauthorized use and shall be liable for
penalty/prosecution© 2009 Mahindra & Mahindra Ltd.
Receiver is integrated in to the MBFM controller, works on 433.92 MHz frequency and
shares the wire antenna along with RKE system.
TPMS Alerts
Tyre pressure & temperature information is processed in the MBFM and alerts are
transmitted to the TPMS display in the instrument cluster through LIN.
Low Pressure alert is issued when the pressure drops below 24 PSI in any moving tyre or
19 PSI in a stationary tyre. The LED of the affected tyre will blink and the buzzer will beep
in a SLOW frequency along with the display of “Pressure” in the alert segment, “PSI” in the
unit segment and the tyre pressure in the value section of the display. Buzzer can be
deactivated by pressing the MODE button, however the buzzer will again come in the next
ignition cycle, if the tyre pressure is not corrected.
The TPMS warning lamp also will be ON
Very Low Pressure alert is issued when the pressure drops below 19 PSI in any moving
tyre or 11 PSI in a stationary tyre. The LED of the affected tyre will blink and the buzzer will
beep in a FAST frequency along with the display of “Pressure” in the alert segment, “PSI”
in the unit segment and the tyre pressure in the value section of the display. Buzzer can
be deactivated by pressing the MODE button, however the buzzer will again come in the
next ignition cycle, if the tyre pressure is not corrected.
The TPMS warning lamp also will be ON
High Pressure alert is issued when the pressure goes above 48 PSI in any moving tyre or
53 PSI in a stationary tyre. The LED of the affected tyre will blink and the buzzer will beep
in a FAST frequency along with the display of “Pressure” in the alert segment, “PSI” in the
unit segment and the tyre pressure in the value section of the display. Buzzer can be
deactivated by pressing the MODE button, however the buzzer will again come in the next
ignition cycle, if the problem is not corrected.
The TPMS warning lamp also will be ON
Fast Leakage alert is issued when the pressure reduces at a rate faster than 3 PSI/minute
in any tyre. The LED of the affected tyre will blink and the buzzer will beep in a FAST
frequency along with the display of “Leakage” in the alert segment, “PSI” in the unit
segment of the display. Buzzer can be deactivated by pressing the MODE button. The
alerts will stop 1 minute after the leakage stops.
The TPMS warning lamp also will be ON

Diagnostic Manual (MBFM) MAN-00068-11
Scorpio
October 2009/Rev 1
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 Authorised Service Centre of Mahindra & Mahindra Ltd., will amount to unauthorized use and shall be liable for
penalty/prosecution© 2009 Mahindra & Mahindra Ltd.
High Temperature alert is issued when the tyre temperature reaches 100 ºC in any tyre.
The LED of the affected tyre will blink and the buzzer will beep in a FAST frequency along
with the display of “TEMP” in the alert segment, “TEMP ºC” in the unit segment of the
display. Buzzer can be deactivated by pressing the MODE button. The alerts will stop if the
tyre temperature drops.
The TPMS warning lamp also will be ON
11. Communication Bus
The Instrument cluster is connected to MBFM via a single wire communication. Data
related to state of the following parameters are transmitted through the LIN (Local
Interconnect Network).
•Driver seatbelt switch
•Brake Fluid Level switch status
•Engine oil pressure switch status
•Park brake switch status
•Door open signal
•ABS MIL lamp
•4WD lamp ( 4 H or 4 L)
12. Diagnostics
The error codes which are stored can be accessed through the vehicles diagnostic Link
Connector (DLC) using the SMART tester and Diagnostic software.

Diagnostic Manual (MBFM) MAN-00068-12
Scorpio
October 2009/Rev 1
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 Authorised Service Centre of Mahindra & Mahindra Ltd., will amount to unauthorized use and shall be liable for
penalty/prosecution© 2009 Mahindra & Mahindra Ltd.
Structure of the MBFM- I/O
Siren- alerts
Door locking
actuators
Foot Step lamps
Front Wipers
VMS
Output to ESS.
Rear defogger
Headlight low beam
Hazard light
IC communication
Dome lamp
Diagnosis (DTC- K
line)
Glove box light
Follow Me Home &
Lead Me to Car
Turn lamps
Siren- perimeter
security
Ignition
Vehicle speed
Door switch (5)
Gear Neutral Switch
90% clutch switch
Turn status
Park /Low/High
Beam status
Wiper switch
position
RLS (Rain Light
Sensor)
ABS MIL input
Rear defogger switch
TPMS (RF)
Hood switch
Hazard switch
Battery
MBFM
Seat belt switch
RKE input
Fog light switch
Fog light

Diagnostic Manual (MBFM) MAN-00068-13
Scorpio
October 2009/Rev 1
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 Authorised Service Centre of Mahindra & Mahindra Ltd., will amount to unauthorized use and shall be liable for
penalty/prosecution© 2009 Mahindra & Mahindra Ltd.
I
Overview of the in-vehicle communication network
MBFM
Instrument
Cluster
Engine
(EMS ECU)
Diagnostic
Connector
(DLC)
IMMOBILIZER
(ICU)
CAN
Local Interconnect Network (LIN)
(MBFM to IC)
K - Line
ABS
(EHCU)

Diagnostic Manual (MBFM) MAN-00068-14
Scorpio
October 2009/Rev 1
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 Authorised Service Centre of Mahindra & Mahindra Ltd., will amount to unauthorized use and shall be liable for
penalty/prosecution© 2009 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 (MBFM) MAN-00068-15
Scorpio
October 2009/Rev 1
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 Authorised Service Centre of Mahindra & Mahindra Ltd., will amount to unauthorized use and shall be liable for
penalty/prosecution© 2009 Mahindra & Mahindra Ltd.
Warranty & Other Information
All failures/complaints encountered on MBFM controller need to be reported through a
Service Complaint Report (SCR).
Replacement of any of the MBFM controller requires approval of the TEKline. Ensure that
a TAR is raised#in the TEKnet website for approval, attaching the SCR. While raising a
warranty claim, the TAR no should be quoted on the warranty claim.
# Only a trained and certified CoTEK can raise a TAR (in TEKnet website)

Diagnostic Manual (MBFM) MAN-00068-16
Scorpio
October 2009/Rev 1
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 Authorised Service Centre of Mahindra & Mahindra Ltd., will amount to unauthorized use and shall be liable for
penalty/prosecution© 2009 Mahindra & Mahindra Ltd.
Customisable Features & Configuation
It possible to customise certain features as per the preferences of the customer using the
SMART tester. Below is the list of customizable features –
Customisation – These features can be enabled or disabled as per the customer’s
preferences.
Configuration – These are factory settings based on the equipment level of the variant.
Consult the TEKLine before attempting to change these parameters. Incorrectly
enabling/disabling these features can generate a DTC and/or other problems.
Information – This section provides information on default settings, IDs etc. These
parameters cannot be changed.
CAT Function Name Description in SMART
Tester Location Action /Remarks
(0 - Disable; 1- Enable)
Start-Stop Start-Stop LID1
Not Available
Battery Saver Battery Saver LID1
When set to 1, the battery saver function is enabled.
Follow Me Home Feature Follow me Home enabled LID2
When set to 1, the follow me home feature is enabled.
Follow Me Home mode FMH door open mode LID2
0: Only driver door open will activate FMH.
1: Any of the four doors (excluding back door) open will activate FMH.
Lead Me to Car Lead me to car enabled LID2
When set to 1, the lead me to car feature is enabled.
Theft Deterent System Anti-theft enabled
LID2
When set to 1, the anti-theft function is enabled.
Auto Light RLS Autolight enabled LID2
When set to 1, the auto-light feature is enabled.
Rain dection RLS Auto Rain enabled LID2
When set to 1, the auto rain feature is enabled.
Tyre Pressure Monitoring
TPMS enabled LID3
When set to 1, the TPMS function is enabled.
Remote Keyless entry CDL RKE enabled LID3
When set to "Both disable", CDL and RKE features are disabled.
When set to "CDL enable", only CDL function is enabled.
When set to "Both enable", CDL and RKE functions are enabled.
Front Fog Lamp Front fog lamp LID1
When set to 1, the Front fog lamp control is enabled.
Rear Fog Lamp Rear fog lamp LID1
When set to 1, the rear fog lamp control is enabled.
DMD DMD LID1
When set to 1, the DMD function is enabled.
4WD 4WD LID1
When set to 1, the 4WD function is enabled.
ABS MIL ABS MIL
LID1
When set to 1, the MIL lamp input from ABS is enabled.
VMS Output VMS output LID1
When set to 1, the output to VMS is enabled.
Rear Demister Rear defogger enabled LID2
When set to 1, the rear defogger control is enabled.
ORVM demister
ORVM defog enabled LID2
When set to 1, theORVM defogger control is enabled.
VIN Number
Vehicle Identification Numbe
LID7
Write VIN
Last Received RKE
LID4
Key1 RKE ID LID4
RKE Identification for Key 1
Key2 RKE ID LID4
RKE Identification for Key 2
Key3 RKE ID LID4
RKE Identification for Key 3
Key4 RKE ID LID4
RKE Identification for Key 4
TPMS Fast leakage
LID3
Status
TPMS spare LID3
Status
TPMS low battery LID3
Status
TPMS miss sensor
LID3
Status
TPMS ID not learnt LID3
Status
TPMS Low pressure 24 LID5
The pressure default value for low pressure alert.
TPMS Very Low 16
LID5
The pressure default value for very low pressure alert.
TPMS High pressure 48 LID5
The pressure default value for high pressure alert.
TPMS High Temp 100
LID5
The pressure default value for high temperature alert.
TPMS ID for RF tire
LID6
View
TPMS ID for LF tire
LID6
View
TPMS ID for RR tire
LID6
View
TPMS ID for LR tire
LID6
View
TPMS ID for spare LID6
View
No of times TPMS
LID7
View
Delphi ECU HW
LID7
View
OEM manufacture LID7
View
OEM ECU software
LID7
View
Delphi ECU SW
LID7
View
Serial No
LID7
View
OEM manufacture LID7
View
CONFIGURATIONINFORMATION CUSTOMISATION

Diagnostic Manual (MBFM) MAN-00068-17
Scorpio
October 2009/Rev 1
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 Authorised Service Centre of Mahindra & Mahindra Ltd., will amount to unauthorized use and shall be liable for
penalty/prosecution© 2009 Mahindra & Mahindra Ltd.
Using the MBFM Diagnostic tool.
“General” screen/DTC Screen
The default home page will be the DTC Screen page
Clicking on the error brings up the environmental conditions on which the error occurred.

Diagnostic Manual (MBFM) MAN-00068-18
Scorpio
October 2009/Rev 1
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 Authorised Service Centre of Mahindra & Mahindra Ltd., will amount to unauthorized use and shall be liable for
penalty/prosecution© 2009 Mahindra & Mahindra Ltd.
Vehicle features
Provides information on –
•Status of various features
•Information is clubbed under different “LID X”
Various features can be enabled or disabled through this section
Important Note -
After enabling or disabling the feature, it is essential that the ignition be reset (i.e. Ignition
is tuned off for 10 seconds) and then on the next cycle the changes will be effective.
LID 1 :