Rail Pressure Deviation - Mahindra Quanto Ems Diagnostic Manual

DIAGNOSTIC MANUAL
QUANTO
P1B88

RAIL PRESSURE DEVIATION

EMS ECU compares the rail pressure monitored through the rail pressure sensor against the expected
pressure generated due to HPP
NORMAL OPERATION

Ignition ON

The ECU compares the rail pressure monitored through the rail
pressure sensor against the expected pressure generated due
to HPP ( Based on MPROP position and the engine RPM and
coolant temperature )
DTC DETECTING CONDITIONS

Ignition ON

EMS ECU supply voltage 8-16V

The negative governor deviation is less than the range and
the set point for fuel flow thru metering unit is lesser than the
limit
DTC REACTIONS

Torque Limitation

Engine Check lamp continuously ON
HEALING CONDITION

Ignition Off/On
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.
EMS
RAIL PRESSURE NEGATIVE GOVERNOR DEVIATION ERROR IN METERING UNIT
DTC INFORMATION
MODE
PROBABLE CAUSES OF FAILURE

M prop valve struck

Zero delivery throttle
clogged

Metering unit without
power due to electrical
error
`
MAN-00201
SEP 2012/Rev 1
249