APRILIA DORSODURO FACTORY ABS 2011 Service Station Manual page 138

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Electrical system
sponds to -25%. In an open circuit, the lambda probe signal is too low. Therefore, the control unit takes
it as a lean combustion condition and will try to enrich it. The value read will be 0.75: once this correction
has been tried, the value shifts to 1.00 fixed and the Lambda probe error is signalled.
NAVIGATOR: STATUSES
Lambda
Example value:Start-up_Lean_Rich_Fault due to rich value_Fault due to lean value
If the probe connector is removed (voltage almost equal to zero), the status is Fault due to lean value
Lambda check
Example value: Open loop/Closed loop/Rich in closed loop/Lean in closed loop/enriched
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.
NAVIGATOR: ACTIVATION
Lambda probe heating
The auxiliary injection relay (No. 40 in the wiring diagram, placed under the fuel tank, right side, second
relay starting from the front; CHECK, however, the identification of the relay with the colour of the cables)
is energised and the heating circuit is closed to ground 5 times (pin 3 of the lambda probe connector).
The continuity of the wiring is necessary for correct activation: no error indications are displayed in case
of lack of activation.
NAVIGATOR: ELECTRICAL ERRORS
Lambda probe P0130 - Shorted to positive.
Error cause
•
Excessive voltage (battery voltage) has been detected at PIN 43 of the ENGINE connector.
Caution: the 'lambda probe' parameter is not the real value that is read; a recovery value is
displayed instead.
Troubleshooting
•
Shorted to positive: with key set to ON, disconnect the sensor connector and measure PIN
1 voltage on the cable harness side (grey cable): if there is voltage (5 or 12 V), restore the
cable harness; if there is not, replace the lambda probe.
Lambda probe heating P0135 - shorted to positive / open circuit, shorted to negative.
Error cause
•
Shorted to positive: excessive voltage has been detected at PIN 32 of the ENGINE con-
nector.
•
If the circuit is open, shorted to negative: voltage equal to zero has been detected at PIN 32
of the ENGINE connector.
Troubleshooting
ELE SYS - 138
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DORSODURO FACTORY ABS