APRILIA SHIVER 900, Service Station Manual

Page: 170 / 444

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Test failed.
Error cause:
•
Position of the throttle valve stopper outside of the specified range (at each key ON).
Troubleshooting:
•
Check the cleanliness of the throttle body and the intake duct. If ok, replace the throttle body.
P1403 Front throttle valve recovery conditions detection (Tair,Twater)
Functional diagnosis:
•
Ice possibly present.
Error cause:
•
in conditions of low ambient temperature and engine temperature, a correct throttle valve
rotation was not detected: possible presence of ice in the duct (at each key ON).
The instrument panel indicates this error by lighting up in a fixed manner the MI warning light.
Troubleshooting:
•
Check the cleanliness of the throttle body and that there is no ice or condensate in the intake
duct. If ok, replace the throttle body.
P1404 Front throttle valve power supply voltage during self-learning.
Functional diagnosis:
•
Low power supply voltage.
Error cause:
•
The throttle valve power supply voltage is too low to correctly perform the self-learning test
(at each key ON).
The instrument panel indicates this error by lighting up in a fixed manner the MI warning light.
Troubleshooting:
•
Remove the presence of errors that prevent throttle self-learning.
P0638 Front throttle valve position error - EPOS error
•
Misalignment between control and activation.
Error cause:
•
The throttle valve mechanical control could be damaged.
Troubleshooting:
•
Replace the throttle body.
P1406 Rear throttle valve Limp Home self-learning
Functional diagnosis:
•
Test failed.
Error cause:
Electrical system
SHIVER 900
ELE SYS - 170