Speed sensor
Function
to indicate the vehicle speed by reading the rear
wheel turning speed
Operation / operating principle
Hall-effect sensor: a square-wave pulse is gener-
ated with voltage between 10 V and 0 V with metal
ground near the sensor V
Level in wiring diagram:
Speed sensor
Location:
•
sensor: on rear wheel fork, right side
•
connector: on right side rear frame
(three-way white connector)
Pin out:
1. Power supply voltage (12V)
2. Output signal
3. Ground connection
DIAGNOSIS INSTRUMENT:
PARAMETERS
Vehicle speed:
km/h
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.
WARNING
Sensor or its circuit malfunction are not detected by the control unit. In case of incorrect or missing
speed indication on the instrument panel, carry out troubleshooting indicated below.
Troubleshooting
Check the speed sensor connector, the engine-vehicle cable harness and the VEHICLE connector of
the Marelli control unit, specially at PIN 79: if not OK, restore; if OK, check, with sensor connector
disconnected, that there is continuity between PIN 3 and ground: if not, restore cable harness and if
there is continuity, check that, with key ON with sensor connector disconnected, there is voltage at PIN
1 (approximately 12 V) : if there is not voltage, set the key to OFF and check continuity between sec-
ondary fuse B and PIN 3 and if there is not continuity, restore cable harness; if there is voltage, set the
key to OFF and check that there is continuity between the VEHICLE connector PIN 79 and the sensor
PIN 2: if there is not continuity, restore the cable harness; if there is continuity, replace the sensor.
Electrical system
RSV4 R
ELE SYS - 150
Summary of Contents for RSV4 R
Page 1: ...SERVICE STATION MANUAL 895777 RSV4 R ...
Page 4: ......
Page 6: ...INDEX OF TOPICS CHARACTERISTICS CHAR ...
Page 51: ...INDEX OF TOPICS SPECIAL TOOLS S TOOLS ...
Page 60: ...INDEX OF TOPICS MAINTENANCE MAIN ...
Page 83: ...INDEX OF TOPICS TROUBLESHOOTING TROUBL ...
Page 92: ...INDEX OF TOPICS ELECTRICAL SYSTEM ELE SYS ...
Page 224: ...INDEX OF TOPICS ENGINE FROM VEHICLE ENG VE ...
Page 243: ...INDEX OF TOPICS ENGINE ENG ...
Page 339: ... Turn the engine with the heads facing upward Tighten the screw 24 RSV4 R Engine ENG 339 ...
Page 349: ...INDEX OF TOPICS POWER SUPPLY P SUPP ...
Page 360: ...INDEX OF TOPICS SUSPENSIONS SUSP ...
Page 398: ...INDEX OF TOPICS CHASSIS CHAS ...
Page 420: ...INDEX OF TOPICS BRAKING SYSTEM BRAK SYS ...
Page 432: ...INDEX OF TOPICS COOLING SYSTEM COOL SYS ...
Page 442: ...INDEX OF TOPICS BODYWORK BODYW ...
Page 468: ...INDEX OF TOPICS PRE DELIVERY PRE DE ...
Page 473: ... Fit the two seater saddle RSV4 R Pre delivery PRE DE 473 ...