Technical data

aprilia
Air-injection 50 cc
Release 00 / 2002 - 09
05 / 11
Chapter.5
(DOUBLE CHECK THE MALFUNCTION BEFORE REPLACING ANY PART)
12
Fuel injector fault 2
-
13
Ignition system fault 2
-
14 Fuel pump fault 3 -
FLASHING NUMBER
DESCRIPTION OF FAULTS FAULT PRIORITY
ENGINE CHECK
POSSIBLE CAUSE CHECKS AND REMEDIES
Connectors
Damaged wires
Damaged fuel injector
Damaged injection plant relay
Damaged ECU
Connectors
High voltage wire spark plug / spark plug
Damaged wires
Damaged high voltage cable.
Damaged ECU
Damaged injection plant relay
Damaged wires
Main switch circuit
Damaged fuel pump
Connectors
Damaged ECU
Check connectors
Check the resistance inside the air injector between
the negative and positive poles (R= 1.8 Ohm)
Check connectors. Fit the relay between the blue and
red/black wires. If the relay closes, check the continu-
ity (R=0 Ohm) between the red/brown wire and orange
wire. If values are correct: check the general feed cir-
cuit (battery, fuse, main switch).
See ECU CONTROL
Check the continuity (R=0 Ohm) of the yellow/red wire
between the fuel injector and ECU. Check the voltage
(12V) between the red/black wire and the negative pole
of the battery.
Check connectors
Check the general feed circuit (battery, fuse, main
switch).
Check connectors. Fit the relay between the blue and
red/black wires. If the relay closes check the continuity
(R=0 Ohm) between the red/brown wire and orange
wire. If values are correct: check the general feed cir-
cuit (battery, fuse, main switch).
Check the spark plug (R= 5 Ohm). Check the continu-
ity of the High Voltage wire of the spark plug.
Check the continuity (R=0 Ohm) of the white/violet wire
between the High Voltage wire and ECU. Check the
voltage (12V) between the red/black wire and negative
pole of the battery.
See ECU CONTROL
Check the continuity (R=0 Ohm) of the green wire be-
tween the fuel pump and ECU. Check the voltage (12V)
between the red/black wire and the negative pole of
the battery.
Check the general feed circuit (battery, fuse, main
switch).
Replace the fuel pump
See ECU CONTROL
Check connectors