APRILIA SHIVER 900 Service Station Manual page 182

Electrical system
CHECK the identification of the relay
with the colour of the cables). Electrical
continuity is required in the wiring for
the relay to activate correctly: no errors
are generated if the relay fails to acti-
vate
CAUTION
BEFORE CARRYING OUT ANY TROUBLESHOOTING,
CAREFULLY READ THE GENERAL TROUBLESHOOTING
CONCEPTS FOR ELECTRICAL DEVICES AT THE BEGIN-
NING OF THE CHECK AND CONTROL SECTION IN THE
ELECTRICAL SYSTEM CHAPTER.
DIAGNOSTIC TOOL: ELECTRICAL ERRORS
P0480 Cooling fan command
Electrical diagnosis:
•
short circuit to positive/ short circuit to negative / open circuit
Error cause:
•
Short-circuit to positive: excessive voltage has been detected at PIN 61 of the VEHICLE
connector.
•
If short circuit to negative: no voltage has been detected.
•
If open circuit: 5V voltage has been detected. Error recognition carries out only when the
fan relay is activated.
Troubleshooting:
•
Short-circuit to positive: check the relay electrical specifications are correct by disconnecting
it from the cable harness. If not OK, replace the relay; if OK, restore the cable harness (Brown
cable)
•
If short circuit to negative: check the relay electrical specifications are correct by discon-
necting it from the cable harness. If not OK, replace the relay; if OK, restore the cable harness
(Brown cable)
•
If open circuit: check the relay electrical characteristics are correct by disconnecting it from
the cable harness; if it is not OK, replace the relay, if it is OK, check relay connector, engine-
vehicle cable harness connector and VEHICLE connector of the Marelli control unit: if not
OK, restore; if OK, check continuity of cable harness (Brown cable)
ELE SYS - 182
SHIVER 900