LE-Jetronic (EFI) test:
Ignition ON, FI relay ON, throttle OFF
Idle switch (full throttle)
Ignition ON, FI relay ON, throttle full
Power (+) to computer, air
flow meter and injectors
Between pin #10 and ground
2.5KΩ @20 ̊C
300Ω @ 80 ̊C
Between pin #12 and pin #9
Between ground of battery and pin 13
Testing the airflow meter:
Test can be done directly at the airflow meter. (Pin # 5-7-8-9)
If you are checking the airflow meter at the injection computer plug, it must be done with the fuel tank
electrics unplugged. Otherwise pin 9 is earthed via the fuel pump and all the readings between pins 5-
7-8-9 are wrong.
The airflow meter can be tested by applying 12v between pins 5 and 8 and measuring the voltage across
pin 5 and 7 while moving the vane. The reading moves smoothly between about 2v and 12v.
The following resistance value reflects test from 3 people on 5 different units.
Vane
closed(value
changes
with vane
position)
Vane
closed(value
changes
with vane
position)
Constant
(not
affected
by vane
position)
Have problem starting the bike with this unit
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