Speed Sensor - MOTO GUZZI California 1400 Instructions Manual

California 1400
•
If too high: too high a voltage has been detected at PIN 52. If too low: too low a voltage has
been detected at PIN 52. The instrument panel does not indicate the presence of this error
even in the ATT status.
Troubleshooting
•
If too high: verify correct operation of the alternator.
•
If too low: carry out the verification procedure for the alternator connector, the engine - ve-
hicle cabling harness connector and the ECU connector (paying particular attention to any
oxidation): if not OK, restore. If OK, check that cable resistance between the alternator cable
and the control unit is a few tenths of Ohm: if not OK, restore cable harness; if OK, check
correct operation of the electrical alternator: restore if not OK.

Speed sensor

VEHICLE FRONT SPEED SENSOR
Function:
To generate a signal that the ABS control unit con-
verts into wheel speed.
Operation / Operating principle:
Magneto-resistive sensor: a square-wave pulse is
generated with voltage between about 11.55V and
about 11.25V between PIN13 and PIN14.
Electrical circuit diagram - Level in wiring dia-
gram:
ABS.
Location on the vehicle:
On the fork, left stanchion, near the brake calliper
mounting bracket.
Connector location:
Under right side steering column.
Pin-out:
•
PIN1 - Negative power/Negative signal
(white cable)
•
PIN2 - Positive power/Positive signal
(white/brown cable)
DIAGNOSIS INSTRUMENT
Parameters: Speed (km/h) - Vehicle speed.
ELECTRICAL ERRORS
Speed sensor
Electrical system
ELE SYS - 113