APRILIA Tuono V4 1100 Factory Service Station Manual page 188

Electrical system
•
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.
Error for unexpected air intake in the front cylinder manifold P1601
•
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).
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.
Rear bank intake manifold pressure estimate error P1602
•
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).
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: there is a very evident defect in the intake and pressure reading sys-
tem.
Front bank intake manifold pressure estimate error P1603
•
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).
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: there is a very evident defect in the intake and pressure reading sys-
tem.
ELE SYS - 188
Tuono V4 1100 Factory