APRILIA Tuono V4 1100 Factory Service Station Manual page 263

Tuono V4 1100 Factory
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no signal.
Error cause:
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No signal is received from the LH light switch.
This error is indicated by lighting up in a fixed manner the general warning light.
Troubleshooting:
•
Check the connector of LH light switch: if not ok, restore; if ok, check the continuity of the
two lines from the LH light switch connector to the VEHICLE connector of the Marelli control
unit: if not ok, restore the wiring harness; if ok, replace the light switch.
NOTE
THIS ERROR DISABLES THE CRUISE CONTROL.
U1130 "LH handlebar" frame counter CAN line diagnosis
Electrical diagnosis:
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Intermittent signal or communication error
Error cause:
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Probable bad contact in the CAN line.
This error is not indicated even in the ATT status.
Troubleshooting:
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Perform the check procedure for the VEHICLE connector at PIN 66 and PIN 80 an of the
PIN B2 and PIN B3 of the engine-vehicle wiring harness connector; if it is not OK restore
and if it is OK perform the check procedure for PIN 3 and PIN 4 of the LH light switch
connector; if NOT OK restore and if OK check the general operation of the Marelli control
unit and of the LH light switch; in case of anomalies, replace the part concerned.
NOTE
THIS ERROR DISABLES THE CRUISE CONTROL.
DIAGNOSTIC TOOL: LOGIC ERRORS
U0121 "ABSENT NODE" ABS control unit
Functional diagnosis:
Missing signal / signal not plausible/ config error
Error cause:
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Missing communication of the ABS control unit to the CAN line
This error is indicated by lighting up in a fixed manner the MI warning light
Troubleshooting:
•
Disconnect the ABS control unit connector and check that there is no dirty, oxidised or dam-
aged PIN; if not ok, restore; if ok, check the continuity between the ABS control unit PIN 2
and PIN 11 and PIN 66 and PIN 80 of the VEHICLE connector of the marelli control unit; if
not ok, restore; if ok, check the continuity between the ABS control unit PIN 2 and PIN 11
and PIN 32 and PIN 33 of the instrument panel; if not ok, restore; if ok, check the continuity
Electrical system
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