Troubleshooting
Teledyne Continental Motors, Inc.
TM
8-6.5. Manifold Air Pressure Sensor
Two self-contained, thread mounted sensors mounted in the throttle body or induction
manifold, depending upon engine model report manifold pressure to FADEC. Sensor
field repair is not authorized. The engine low voltage harness uses removable, circular
connectors to interface with the Manifold Air Pressure Sensors.
Manifold Air Pressure Sensor Fault
Disconncet Sensor 1
(connected to P11)
Cylinder?
Disconnect Sensor 2
(connected to P12)
ODD #
EVEN #
Replace the MAP sensor.
Secure the engine low voltage
harness.
Perform FADEC Level I
Diagnostic (Section 8-6-1) or
Engine Operational Check
(Sect. 6-1).
NOT OK
OK
Secure the engine low voltage
harness.
Perform FADEC Level I
Diagnostic (Section 8-6-1) or
Engine Operational Check
(Sect. 6-1).
Replace ECU
(Section 10-11)
Repair wiring (Sect. 10-10)
OK
NOT OK
Master Power Switch……....ON
FADEC Primary Power…….ON
FADEC Secondary Power...ON
Check voltage between pins:
5.0
± 0.05 VDC
A and C
D and F
Disconnect P1 and P2
Master Power Switch……....OFF
FADEC Primary Power…….OFF
FADEC Secondary Power...OFF
Check continuity between pins:
P12 pin A - P2 pin 49
P12 pin B - P2 pin 33
P12 pin C - P2 pin 41
P12 pin D - P1 pin 49
P12 pin E - P1 pin 33
P12 pin F - P1 pin 41
P11 pin A - P1 pin 42
P11 pin B - P1 pin 25
P11 pin C - P1 pin 48
P11 pin D - P2 pin 42
P11 pin E - P2 pin 25
P11 pin F - P2 pin 48
8-16
IOF-240 Series Engine Maintenance Manual
Change 1
31 August 2007
