MOTO GUZZI California 1400, Instructions Manual

Page: 144 / 411

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If shorted to positive: excessive voltage has been detected at PIN 48. If the circuit is open,
shorted to negative: voltage equal to zero has been detected at PIN 48.
Troubleshooting
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If shorted to positive: check the value indicated by the Throttle Potentiometer 1 parameter
(voltage): disconnect the connector and read the value indicated by the diagnostics instru-
ment: if the voltage does not vary, there is a short circuit in the cable; replace the throttle
body if the voltage drops to zero
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If the circuit is open, shorted to negative: check the throttle body connector and the control
unit connector. If not OK, restore; if everything is OK, check circuit continuity between the
two terminals. If not OK, restore the cable harness; if OK, check the circuit ground insulation
(from throttle sensor connector or control unit connector). If it is ground insulated, check that
there is power (+5 V) at the throttle body connector PIN 2, and that PIN 6 is connected to
ground. If both are correct, replace the throttle body
'sensor potentiometer 2 throttle position P0122
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short circuit to positive / open circuit, short circuit to negative
Error cause
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If shorted to positive: excessive voltage has been detected at PIN 50. If the circuit is open,
shorted to negative: voltage equal to zero has been detected at PIN 50.
Troubleshooting
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If shorted to positive: check the value indicated by the Throttle Potentiometer 2 parameter
(voltage): disconnect the connector and read the value indicated by the diagnostics instru-
ment: if the voltage does not vary, there is a short circuit in the cable; replace the throttle
body if the voltage drops to zero
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If the circuit is open, shorted to negative: check the throttle body connector and the control
unit connector. If not OK, restore; if everything is OK, check circuit continuity between the
two terminals. If not OK, restore the cable harness; if OK, check the circuit ground insulation
(from throttle sensor connector or control unit connector). If it is ground insulated, check that
there is power (+5 V) at the throttle body connector PIN 2, and that PIN 6 is connected to
ground. If both are correct, replace the throttle body
DIAGNOSTICS INSTRUMENT: LOGIC ERRORS
potentiometer 1 sensor, throttle position P0121
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signal not valid
Error cause
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Signal not within the expected value drawn according to the values of the intake pressure
Troubleshooting
Electrical system
California 1400
ELE SYS - 144