MOTO GUZZI B043157 Service Station Manual page 149

Moto Guzzi California 1400
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Check the Throttle Potentiometer 1 parameter (voltage) to understand which signal the
control unit receives. Check the throttle body connector as well as the control unit connector.
Check that cable resistance between the throttle body connector (PIN 1) and the control unit
(PIN48) is a few tenths of an Ohm. If this is not the case, restore the cable harness. If the
value is correct, replace the complete throttle body
'sensor potentiometer 2 throttle position P0123
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signal not valid
Error cause
•
Signal not within the expected value drawn according to the values of the intake pressure
Troubleshooting
•
Check the Throttle Potentiometer 2 parameter (voltage) to understand which signal the
control unit receives. Check the throttle body connector as well as the control unit connector.
Check that cable resistance between the throttle body connector (PIN 4) and the control unit
(PIN 50) is a few tenths of an Ohm. If this is not the case, restore the cable harness. If the
value is correct, replace the complete throttle body
throttle position potentiometer P0124
•
inconsistent signal
Error cause
•
Potentiometer 1 and potentiometer 2 do not show a logical value: the sum of the two voltages
should be constant. The cause may be a malfunction in one of the two sensors or an ab-
normal resistance in one of the two circuits
Troubleshooting
•
Check the throttle body connector as well as the control unit connector. Check that cable
resistance between the throttle body connector (PIN 1) and the control unit (PIN 48) is a few
tenths of an Ohm. Check that cable resistance between the throttle body connector (PIN 4)
and the control unit (PIN 50) is a few tenths of an Ohm. If one of the two is different, restore
the cable harness. If correct, replace the complete throttle body.
Throttle Limp Home self-acquisition P0160
•
failed test
Error cause
•
Throttle position, kept by the springs, not within the expected range (at each key ON). The
instrument panel does not indicate the presence of this error even in the ATT status
Troubleshooting
•
Check if the throttle body and the intake duct are clean. If OK, replace the throttle body
Throttle mechanical springs self-acquisition P0161
Electrical system
ELE SYS - 149