APRILIA SHIVER 900 Service Station Manual page 144

Electrical system
P1600 Error due to unexpected air intake in the front cylinder manifold
Functional diagnosis:
•
signal not plausible.
Error cause:
•
Small difference detected between the estimated pressure and the measured pressure: the
measured pressure is higher than the estimated one (for example, the pipe between sensor
and throttle body is squashed or there is a hole in the intake manifold).
This error is indicated by flashing the general warning light and by lighting up in a fixed manner the MI
warning light.
Troubleshooting:
•
Check the pneumatic system between the pressure sensor and the socket to read pressure
on the throttle body; check that the intake manifold is in good conditions and the pressure
reading hole is clean.
P1601 Error due to unexpected air intake in the rear cylinder manifold
Functional diagnosis:
•
signal not plausible.
Error cause:
•
Small difference detected between the estimated pressure and the measured pressure: the
measured pressure is higher than the estimated one (for example, the pipe between sensor
and throttle body is squashed or there is a hole in the intake manifold).
This error is indicated by flashing the general warning light and by lighting up in a fixed manner the MI
warning light.
Troubleshooting:
•
Check the pneumatic system between the pressure sensor and the socket to read pressure
on the throttle body; check that the intake manifold is in good conditions and the pressure
reading hole is clean.
P1602 Estimation error for front cylinder intake manifold pressure
Functional diagnosis:
•
pressure too high/pressure too low.
Error cause:
•
A substantial difference between the estimated pressure and the measured pressure has
been detected (for example, the pipe between sensor and throttle body is fully detached/
clogged or squashed).
This error is indicated by flashing the general warning light and by lighting up in a fixed manner the MI
warning light.
Troubleshooting:
ELE SYS - 144
SHIVER 900