MOTO GUZZI 1200 SPORT 4V Service Station Manual page 64

Electrical system
AXONE: STATUSES
Lambda check
Example value: Open loop / Closed loop
Closed loop indicates that the control unit is using the lambda probe signal to keep the combustion as
close as possible to the stoichiometric value.
AXONE: ELECTRICAL ERRORS
Lambda probe P0130 - Shorted to positive.
Error cause
•
Excessive voltage (battery voltage) has been detected at PINS 32 and 22 of the BLUE
connector.
Troubleshooting
•
shorted to positive: with the key set to ON, disconnect the sensor connector and measure
voltage at PIN 1 on the cable harness side (white/yellow cable): if there is voltage (5 or 12
V), restore the cable harness; it there is no voltage, measure voltage at PIN 2, cable harness
side, (green/white cable) and if there is voltage, restore the cable harness; if there is no
voltage, replace the lambda probe
Lambda probe heating P0135 - shorted to positive / open circuit, shorted to negative.
Error cause
•
If shorted to positive: excessive voltage has been detected at PIN 11 of the BLUE connector.
•
If the circuit is open, shorted to negative: voltage equal to zero has been detected at PIN 11
of the BLUE connector
Troubleshooting
•
shorted to positive: disconnect the probe connector and check the sensor correct resistance:
replace the sensor if not OK; if it is OK, restore the cable harness.
•
if the circuit is open, shorted to negative: check the continuity from probe connector (PIN 3
and 4) towards the probe: if not OK, replace the probe; if it is correct, check the sensor
connector and the Marelli control unit connector. If not OK, restore. If OK, and with key set
to ON and sensor connector disconnected, check if there is battery voltage at PIN 4: if not
OK, check the red/black cable (cable harness side) between the probe connector and the
auxiliary injection relay (No. 29 in the wiring diagram, placed under the saddle, rear side, in
the auxiliary fuses/relays box, close to the fuses, in the row towards the rear; CHECK, how-
ever, the identification of the relay with the colour of the cables). If there are also coil and
injector errors, check that relay and its excitation and power line; if there is voltage at PIN
4, check the white cable ground insulation, cable harness side (PIN 3): if it is not OK, restore
the cable harness. If OK, check continuity of the white cable, cable harness side (between
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ELE SYS - 64
1200 SPORT 4V