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Is the air chamber and the tube clogged?
Replace the Main PCB.
Is the Connector connected correctly to
the Main PCB and the Pressure Switch ?
Or is the Harness alright ?
Reconnect or repair the Connector.
Or replace the Harness.
Check air chamber and remove the foreign material.
Replace the Pressure Switch.
YES
YES
NO
Is the resistance of the Pressure Switch
out of range?
[Pin1 ~ Pin3]
21~23Ω)
NO
NO
YES
Pressure Sensor S/W Error (PE)