Connectors - APRILIA RS4 125 Service Station Manual

RS4 125
BEFORE CARRYING OUT ANY TROUBLESHOOTING, CAREFULLY READ THE GENERAL TROU-
BLESHOOTING CONCEPTS FOR ELECTRICAL DEVICES AT THE BEGINNING OF THE CHECK
AND CONTROL SECTION IN THE ELECTRICAL SYSTEM CHAPTER.
ELECTRICAL ERRORS
Fan relay P0480 - shorted to positive / shorted to negative / open circuit.
Error cause
Shorted to positive: excessive voltage at PIN 24 of the control unit connector.
Shorted to negative: null voltage at PIN 24 of the control unit connector.
The circuit is open: interruption of the circuit.
Troubleshooting
Shorted to positive:
•
Disconnect the fan control relay (No. 42 on the electrical circuit diagram) and, turning the
key to the ON position, measure the voltage read at the relay connector PIN 1 toward the
cabling: if the voltage is 12V restore the cabling. If the voltage is zero replace the relay.
Shorted to negative:
•
Disconnect the fan control relay (No. 42 on the electrical circuit diagram) and the control
unit.
•
Verify ground insulation of the cable between the fan control relay (PIN 1) and the control
unit (PIN 24). Restore the cabling if necessary.
The circuit is open:
•
Carry out the check procedure of the control unit and relay connectors.
•
Verify electrical continuity of the cable between the relay connector (PIN 1) and the control
unit connector (PIN 2).
•
Verify electrical continuity of the cable between the relay connector (PIN 2) and the secon-
dary fuses.
•
Verify continuity between relay PIN 1 and PIN 2. If there is no continuity replace the relay.

Connectors

Electrical system
ELE SYS - 123