
•
position error.
Error cause
•
Position indicated by potentiometer does not correspond with position set by control unit.
Troubleshooting
•
Mechanically check the valve, its normal rotation (with cables disconnected from motor,
manually activate the cables and see movement regularity and check valve complete stroke
with correct operation of the return spring) and absence of foreign bodies which do not allow
its rotation: if not OK, restore; if OK, check valve and instrument panel connectors (special
attention to oxidation) and check cables resistance: if not OK, restore; if OK, always with
cables disconnected and key set to ON, check normal rotation of the electric motor and
replace motor (potentiometer does not work correctly).
DIAGNOSIS INSTRUMENT: ADJUSTABLE PARAMETERS
•
Acquire exhaust valve zero position.
NOTE: Motor is placed in a reference position to correctly search mechanical stop later.
•
Exhaust valve self-acquisition
NOTE: Search minimum and maximum mechanical stop.
The system consists of a throttle valve (1) with a return spring placed in the exhaust pipe. The valve is
closed via two cables actuated by an electric motor (2) which, in turn, is connected electrically to the
instrument panel. The operating logic and motor control are, however, resident in the Marelli injection
control unit, which dialogues with the instrument panel via the CAN.
The motor unit (2) consists of a potentiometer for position detection and a DC electric motor (2).
At key-ON, a valve (1) self-cleaning cycle is performed.
In the event of malfunction (electric or mechanical), the valve (1) may remain stuck in the closed position.
In the event of a CAN line malfunction, the valve (1) is returned to the open position.
In the event of removal or replacement of one or more system components (cables, valve or motor), a
calibration procedure is required.
RSV4 R
Electrical system
ELE SYS - 213
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 ...