MOTO GUZZI 2Q000297 Service Station Manual page 113

V7 III ABS
•
On the fork, left stanchion, near the
brake calliper mounting bracket
Pin-out
1. Ground (White)
2. Power supply voltage/Output signal (white/
brown)
Diagnostic tool - Parameters and statuses
•
Vehicle speed - (km/h)
•
Front wheel speed - (km/h)
Diagnostic tool - Electrical errors
Electric malfunction 5D90
Error cause
•
Electrically defective wiring or sensor
Troubleshooting
•
Check the sensor connector and the ABS control unit connector. If they are not OK, restore
the connectors. If they are OK, check continuity of the white/brown cable between PIN 2 of
the sensor on the wiring harness side and PIN 14 of the ABS control unit connector If there
is no continuity, restore them. If there is, PIN 2 of the sensor on the wiring harness side, with
the sensor disconnected and key set to ON, must have 12V voltage approximately; if there
is no voltage, check PIN 2 for continuity with the vehicle ground connection: if not ok to
ground, restore the wiring harness. If OK, replace the control unit. If PIN 2 has approx. 12
V, check the continuity of the white cable between PIN 1 of the sensor on the wiring harness
side and PIN 13 of the ABS control unit connector. If there is no continuity, restore the wiring
harness. If there is, replace the logic errors sensor.
Front wheel speed signal/sensor P0501 - signal not valid
Troubleshooting
•
Connect to the ABS control unit diagnostics
Diagnostics tool - Logic errors
The signal changes irregularly 5D91
Error cause
•
Faulty sensor or signal interference
Troubleshooting
•
Check speed sensor retainer; if not ok restore, if ok, check if the tone wheel is dirty, deformed
or wrongly fixed; if it is not OK, replace the tone wheel; if it is OK, replace the speed sensor.
The signal decreases periodically 5D92
Error cause
Electrical system
ELE SYS - 113