Compare the actual inlet manifold pressure through manifold
absolute pressure sensor with the assumed inlet manifold pressure through the throttle position
sensor (main/sub) signal.
TROUBLE JUDGMENT
Ignition switch is “ON” position.
Throttle position sensor (main/sub) is normal.
Monitoring time: ones per 200 ms
The difference between the assumed intake air pipe pressure by throttle position
sensor (main) and by throttle position sensor (sub) is 7 kPa or less.
The difference between the actual and the assumed inlet manifold pressure through
the throttle position sensor (main) is 27 kPa or more.
The difference between the actual and the assumed inlet manifold pressure through
the throttle position sensor (sub) is 27 kPa or more.
PROBABLE CAUSES
Failed manifold absolute pressure sensor
Harness damage in manifold absolute pressure sensor circuit