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Disconnect the fuel pump connector. Start the en-
gine and wait for it to stop. With the wiring con-
nected to the control unit and the system, try to
start-up the engine and check that the alternating
voltage between pins 13 and 15 is over 2.5 V ~
With the interface cabling disconnected from the
control unit, check the continuity of the rpm sensor
connector red cable between pin 13 and pin 1 and
the rpm sensor connector white cable between pin
15 and pin 2
With the interface wiring disconnected from the
control unit and the rpm sensor connector also
disconnected, check that the red and brown cables
(pin 13 - 15) are insulated from each other and in-
sulated from the earth connection.
Specific tooling
AP8181059 Control unit interface wiring
* Digital multimeter
INJEC - 173


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