Diagnostic Manual (MBFM) MAN-00068-9
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.
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