APRILIA RSV4 1100 Factory Service Station Manual page 190

Electrical system
insulated, check that the power supply (+5 V) is present at PIN 2 of the throttle body con-
nector and that ground is present at PIN 6, if present correctly replace the throttle body
Front bank throttle valve position potentiometer sensor P0220
•
short circuit to positive / open circuit, short circuit to negative
Error cause
•
Short-circuit to positive: excessive voltage has been detected on PIN 36. If open circuit, short
circuit to negative: voltage equal to zero detected at PIN 36
Troubleshooting
•
Short-circuit to positive: check the value shown by the parameter of the Rear throttle Po-
tentiometer 1 (voltage): disconnect the left side connector and read the value indicated in
the diagnostic tool: if the voltage does not vary, there is a short circuit in the cable wiring;
replace the throttle body if the voltage drops to zero
•
If open circuit, short circuit to negative: check the throttle body connector and the control
unit connector, if not ok restore, if everything is ok check the continuity of the circuit between
the two terminals, if not ok restore the wiring harness, if ok check the ground insulation of
the circuit (from the throttle valve sensor connector or control unit connector), if ground
insulated, check that the power supply (+5 V) is present at PIN 2 of the throttle body con-
nector and that ground is present at PIN 6, if present correctly replace the throttle body
Front throttle valve position potentiometer sensor CF2 P2125
•
short circuit to positive / open circuit, short circuit to negative
Error cause
•
Short-circuit to positive: excessive voltage has been detected on PIN 21. If open circuit, short
circuit to negative: voltage equal to zero detected at PIN 21
Troubleshooting
•
Short-circuit to positive: check the value shown by the parameter of the rear Throttle Po-
tentiometer 2 (voltage): disconnect the left side connector and read the value indicated in
the diagnostic tool: if the voltage does not vary, there is a short circuit in the cable wiring;
replace the throttle body if the voltage drops to zero
•
If open circuit, short circuit to negative: check the throttle body connector and the control
unit connector, if not ok restore, if everything is ok check the continuity of the circuit between
the two terminals, if not ok restore the wiring harness, if ok check the ground insulation of
the circuit (from the throttle valve sensor connector or control unit connector), if ground
insulated, check that the power supply (+5 V) is present at PIN 2 of the throttle body con-
nector and that ground is present at PIN 6, if present correctly replace the throttle body
Rear throttle control circuit P2119
ELE SYS - 190
RSV4 1100 Factory