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Revotron 1.2T
164
able to endure up to 2100 bar inlet pressure
for 10 hours and the injector characteristics
remain within original tolerances when a
normal operating pressure is used after this
condition.
The fuel injector is solenoid ball valve, top
feed with a 2 pin connector. The solenoid
valve normally closed by a ball and a cone
seat, opens when the electromagnetic core is
energized. Fuel under pressure in common
rail flows through metering orifice, where fine
atomization of the fuel takes place and flows
consistently for a given injector opening time.
The injector which is normally in closed
position, receives drive signal from ECU to
open for a given pulse width (few milli
seconds), depending on the engine operating
conditions.
Sensor Stand alone Diagnosis :
Connector details :
Injector 1
1. ECU pin M2H2 : signal
2. supply voltage - 12V
Injector 2
1. ECU pin M2G3 : signal
2. supply voltage - 12V
Injector 3
1. ECU pin M2G2 : signal
2. supply voltage - 12V
Injector 4
1. ECU pin M2H3 : signal
2. supply voltage - 12V
Use multimeter to check coil resistance
which should be 12.25ohms ± 0.5ohms
vi. Electronic Throttle Body :
Component Details :
A DC motor drive is used to move the
throttle valve over the complete movement
range. The DC motor is directly controlled by
the ECU of the Diesel engine. Throttle Valve
H-bridge driver of EMS ECU provides
bidirectional control with active recirculation
and over current detection.
Component Location :
The throttle position sensor is mounted on
intake manifold upstream side.
Preliminary Checks :
1. Please check whether dust/mud/any
particle is blocking throttle valve.
2. Please check whether the throttle valve is
stuck closed.
3. Please check for any throttle body related
faults and rectify those faults by following
their rectification procedure.