ELECTRICAL SYSTEM
14 - 24
Performance parameters
Project Parameter
Static fl ow 207.8g/min
Dynamic fl ow 6.65mg/stroke
Jet angle 23°
Coil resistance 12Ω
Hydraulic leak 1.8mm3/min
A
B
Fault diagnosis
ECU only implements fault diagnosis for the fuel injector
drive stage. When the fuel injector drive stage is short-
circuited or overloaded to the battery voltage, short-
circuited to the ground, or open circuit, the fault fl ag is set.
At this time, close the closed-loop control of the oxygen
sensor and its self-learning pre-control. The last self-
learning data is valid. After the fault is removed, the fault
fl ag is reset. Common fault codes are shown in the fault
summary table
◆ Injector failure inspection:
◆
Check the connectors are well connected
◆ Check whether the wiring harness and injector pins
are bent or deformed
◆
Check whether the injector cap and the oil pipe are
reliably connected
◆ Unplug the connector and check the coil resistance
between pins
【
A
】
and
【
B
】
◆ Check the resistance between the pins (【A】 on
the left) and the main relay
◆
Check the resistance between the pins (
【
B
】
in the
left picture) and ECU pin 48 (see ECU pin defi nition)
!
When removing the fuel pipe, there is high-pressure fuel
in the fuel pipe. Pay attention to fi re safety and spray it
into your eyes carefully.
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