Boost Pressure Modulator Over Temperature Error - Mahindra Quanto Ems Diagnostic Manual

DIAGNOSTIC MANUAL
QUANTO
P1645
BOOST PRESSURE MODULATOR
The boost pressure modulator controls the variable vanes of the VGT to attain the desired boost
pressure thru controlling the vacuum to boost pressure actuator .In normal operation and during an
actuator test, the PWM power stage of ECU is tested for short circuit to battery voltage, short circuit to
ground, open circuit and excess temperature. Once the errors are confirmed, the power stage is switched
off.
NORMAL OPERATION

Ignition ON

No malfunction detected by EMS ECU in the boost pressure
modulator circuit.
DTC DETECTING CONDITIONS

Ignition ON

EMS ECU supply voltage 8-16V

Overheating detected in power stage
DTC REACTIONS

OBD check lamp continuously ON

EGR switches OFF
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

BOOST PRESSURE MODULATOR OVER TEMPERATURE ERROR

DTC INFORMATION
MAN-00201
SEP 2012/Rev 1
PROBABLE CAUSES OF FAILURE

Loosen boost pressure
modulator wiring harness
connector

Faulty EMS ECU
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