APRILIA SX 125 Service Station Manual page 187

RX SX 125
The solenoid controlled by the rave control unit opens the exhaust valve at 8000 rpm.
TROUBLESHOOTING
•
Check that the 7.5 A fuse is in good
conditions.
•
Check the if the solenoid is working
properly by powering it directly with a
12 V battery.
•
Check the flywheel
•
Replace the regulator with another one
in proper operating conditions.
•
Replace the EFI control unit with an-
other one in proper operating condi-
tions.
CAUTION
THE RAVE VALVE CHECKING FUNCTION IS ACTIVATED
WHEN THE EFI CONTROL UNIT JUMPER IS CUT OFF.
SOLENOID
•
Check that the piston moves freely.
•
Measure the resistance between the wires with a tester:
•
Correct value = 2.2 Ohm + / - 10%.
•
Start the vehicle, go over 6500 rpm
•
Let the engine idling
Chassis
CHAS - 187