Diagnostic Manual (MBFM) MAN-00068-33
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.
Code Label
B 1003 Starter relay output short to Ground/ open
B 1004 Starter relay output short to battery
Description
MBFM controls the Starter Relay under two situations:
If it gets a signal from the ignition switch or if it gets the signal from Engine ECU in the Start stop
functionality (if the Start Stop is enabled)
The MBFM inhibits that starter relay if the following conditions are present:
e. The MBFM Anti theft is in armed state
f. The engine speed is above a set speed, indicating that the engine is already running. This
is to avoid the starter operation when the engine is already running,
g. The Gear Neutral switch detects that the gear is not in neutral (gear engaged detected) &
the clutch pedal is not pressed up to 90%.
h. The starter is engaged for > 10 seconds
i. If the MBFM switches off the starter relay due to point d. Then a minimum time of 5 sec has
to pass before it will energize next attempt.
B 1003
B 1004
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