When using intelligent tester:
READ VALUE USING INTELLIGENT TESTER (INTAKE MANIFOLD PRESSURE)
CHECK CONNECTION OF VACUUM HOSE
INSPECT MANIFOLD ABSOLUTE PRESSURE SENSOR
CHECK HARNESS AND CONNECTOR (ECM - MANIFOLD ABSOLUTE PRESSURE SENSOR)
When not using intelligent tester:
INSPECT MANIFOLD ABSOLUTE PRESSURE SENSOR
CHECK HARNESS AND CONNECTOR (ECM - MANIFOLD ABSOLUTE PRESSURE SENSOR)