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TUONO V4 R a-PRC ABS
Quick shift
Function:
To signal to the control unit the request for power-
assisted gear shifting.
Operation / Operating principle:
Normally open switch that is closed to ground
when the gearbox lever is activated (only when
shifting up).
Electrical circuit diagram - Level in electrical
circuit diagram:
Electronic transmission.
Location on the vehicle:
On the gearbox lever transmission.
Connector location (if available):
Under the fuel tank, left side, next to the rear head.
Electrical specifications:
Normally open.
Pin-out:
•
PIN1 - Signal
•
PIN2 - Ground
DIAGNOSTIC TOOL: STATUSES
Quick shift (electronic transmission) control status:
Activated released.
Aprilia Quick Shift:
Present/Not present
DIAGNOSTIC TOOL: ELECTRICAL ERRORS
Quick Shift sensor (electronic transmission) P0462.
•
Shorted to negative (upon key-ON)/Signal not valid.
Error cause:
If shorted to negative: on key-ON a voltage equal to zero has been detected at PIN 47. If signal is not
valid it means that the control unit has detected activation of the lever but not its release within the set
time limit.
Troubleshooting:
indication on the diagnostics tool always ACTIVATED: disconnect the sensor connector and, with the
switch RELEASED, check if there is continuity between the two cables (PIN 1) and (PIN 2) (sensor
side): if present, replace the sensor; if not present, replace the cable harness. Disconnect the Engine
connector from the Marelli control unit and check the ground insulation of the black cable (sensor PIN
Electrical system
ELE SYS - 221
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