APRILIA QUASAR 125 2003 Workshop Manual page 120

QUASAR 125-180
CHECKING THE RESISTORS
"
Disconnect the two-way connector positioned close to resistors.
"
Measure resistance on yellow and black cables.
Standard values: 4.5 Ω ± 10 %.
CHECKING THE START BUTTON "
"
Disconnect button connector.
"
Using a tester, set on resistance meter function, check the continuity
between the contacts in the pressed and released positions based on the
existing connections (MAIN WIRING DIAGRAM).
THE STOP LIGHT IS ALWAYS ON
"
Check connections on tail light.
"
Check front STOP switch (CHECKING THE FRONT AND REAR STOP
SWITCH).
"
Check the rear STOP switch (CHECKING THE FRONT AND REAR STOP
SWITCH).
THE STOP LIGHT DOES NOT COME ON
"
Check bulb and bulb holder.
"
Check stop light circuit cables connectors.
"
Check main power supply circuit.
"
Check the front STOP switch (CHECKING THE FRONT AND REAR STOP
SWITCH).
"
Check the rear STOP switch (CHECKING THE FRONT AND REAR STOP
SWITCH).
Release 00/2003 - 09
"
ELECTRIC SYSTEM
5 - 17 -
00