DIAGNOSTIC MANUAL MAN-00201
QUANTO
EMS
SEP 2012/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 Authorized Service Centre of Mahindra & Mahindra Ltd.,
will amount to unauthorized use and shall be liable for penalty/prosecution
© 2012 Mahindra & Mahindra Ltd.
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P1631
ECU MONITORING: START OF INJECTION PLAUSIBILITY ERROR
DTC INFORMATION
PROBABLE CAUSES OF FAILURE
NORMAL OPERATION
Ignition ON
The start of the energizing time is monitored
DTC DETECTING CONDITIONS
Ignition ON
EMS ECU supply voltage 8-16V
If the start of the energizing time is outside the plausible
valid range then this error is registered
DTC REACTIONS
Engine Shuts Off.
Engine Check lamp continuosly ON
HEALING CONDITION
Ignition Off/On
EMI interference in the
signal from the Engine
speed sensor
Corrective Action –
1.
Check and rectify if any EMI interference in signal from the Engine sensor ( possible cause can be
starter motor cable or starter motor taking extra load )
2.
Using diagnostic tester clear the DTC.
3.
Turn ignition OFF/ON
4.
Check for the DTC . If the DTC still exists , repeat the steps 1 and 2 for 3 times
5.
If DTC still exists replace the EMS ECU with a new one
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