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1.5L REVOTORQ ENGINE
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iv. AIR MASS FLOW SENSOR
This sensor is mounted between air filter and
turbocharger. It gives Information about the
amount of air quantity & temperature entering the
engine.
This input is used by the ECU for corrections of
fuel quantity based on amount of air availability for
optimization of exhaust gas circulation & the
turbocharger control. While assembling, the AMF
sensor the point of the arrow should be towards
the Turbo charger.
SENSOR LOCATION
Checking Condition
With Ignition 'ON',
Check Output Voltage between Pin 3
(MAF) and Pin 5 (GND).
Check Output Current between Pin 1 (Ub)
and Pin 5 (GND).
Signal/Output Current
The current consumption has to be between 35
and 55mA.
Signal/Output Voltage
The analog output signal is good between 0 and
1V
NOTE
Check the AMF Sensor with no mass flow. The
above given values are for zero mass flow. Every
tiny whiff of air will cause a NTF".
CONNECTOR DETAILS
PINOUT DETAILS
Pin No
Description
1
Ubat 5V
2
GND
3
Tm
4
NTC
v. VENTURI
It is an integral part of High pressure pump. It has
inlet & outlet connections. One connection comes
from injector back leak circuit & the other
connection goes to the fuel tank (return Line), in
between there is a "T" connector which goes to
the fuel filter.