Mahindra Genio DC BS-III Diagnostic Manual page 77

Diagnostic Manual (EMS)
Genio DC BS-III & BS-IV
ECU
ICO Monitoring
Description: Communication between controller and power stage inside
the ECU is not OK
DTC
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DTC detection condition
Normal Operation
During the ICO no injection is taking place
•
during the overrun monitoring it observes that the
injection is taking place (when it is not supposed to do so,
it takes cognisance of the injections which are supposed
to take place due to ZFC and FBC, this is above that). If it
is more than 8 times then the reaction is injection cut off.
• BS III & BS IV – no lamp.
• ECU off- which means engine is OFF.
• Restart not possible
Trouble Shooting
1. Switch ON Ignition
2. Using smart tester, clear the ECU faults.
3. Switch OFF Ignition key and wait for 2 minutes.
4. Switch ON Ignition.
5. Using smart tester check whether any of the above mentioned fault is present.
6. If fault is still present, switch OFF ignition.
7. Replace the ECU with a new one and repeat steps 4 & 5.
8. If fault is not present in the new ECU, then the old ECU is defective and has to be
sent back to M&M.
.
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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.
at the Authorized Service Centre of Mahindra & Mahindra Ltd., will amount to unauthorized use and shall be liable for penalty/prosecution© 2010 Mahindra &
Mahindra Ltd.
Diagnostic item
Shutoff request of the injection cutoff
Malfunction
Reaction
MAN-00139-77
August 2011/Rev 1
Probable cause for
malfunction
• ECU failure.
.
The use of this document by any person other than the trained personnel,
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