Hola, creo que he encontrado un artículo muy interesante sobre como chekear sistema LE-Jetronic (mierda el kadett usa LE3-Jectronic).
Buscar jetronic
http://hrsbstaff.ednet.ns.ca/bvogel/...ont-start1.htm
Os pongo un resumen:
LE-Jetronic female connector:
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The following table show the results expected at the female connector
and NOT at the computer pins.
NEVER use your meter on the computer pins!LE-Jetronic (EFI) test:
Pin # Function Testing mode type expected value 1 info on engine rpm When starter is running Volts ~ 10 to 20mv 2 Idle switch (idle) Ignition ON, FI relay ON, throttle OFF Volts -- 12v 3 Idle switch (full throttle) Ignition ON, FI relay ON, throttle full Volts -- 12v 4 starter running Starter switch depressed Volts -- 12v 5 Ground air flow meter Ω 0Ω 7 Info on air flow meter between pin#7 and pin #5 Ω See below for data collected on 5 units 7 Info on air flow meter between pin#7 and pin #8 Ω 8 Info on air temperature between pin#8 and pin#9 Ω 9 Power (+) to computer, air flow meter and injectors When starter is running Volts -- 12 10 Water temperature Between pin #10 and ground Ω 2.5KΩ @20 ̊C
300Ω @ 80 ̊C12 Ground to injectors Between pin #12 and pin #9 Ω 1 injector 16Ω Ω 2 injectors 8Ω Ω 3 injectors 5.33Ω Ω 4 injectors 4Ω 13 Ground Between ground of battery and pin 13 Ω 0Ω
Air flow meter:
This is the EFI connector where the test has to be done
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.
Pin 7-5 Pin 7-8 Pin 8-5 Pin 8-9 Status Vane closed(value changes with vane position) Vane closed(value changes with vane position) Constant (not affected by vane position) air temperature 152 403 361 207 Have problem starting the bike with this unit 82 334 363 207 OK 93 358 360 202 OK 76.6 334 360 205 OK 66 161 33 132 Bike doesn't start
Air temperature sensor test
(in the mouth of the Airflow meter)
Values obtained between pin #8 and #9 of the airflow meter.
Under 30 degrees Celsius, the value of the resistance is decreasing by only 1 to 2Ω per degree.
A corroded connection will greatly affect these values.







