Engine Control System

Question 1

Locate three of the six primary sensors?

Answer 1

NG sensor - AGB

PTIT sensor - rear support (5 probes equally spaced around the circumferance)

NP Sensor rear support, radial support 2 o’clock position

CDP/P3 sensor - IPS scroll (right side, in front of oil tank)

CIT sensor - IPS scroll (left side)

TRQ sensor - Front frame radial struct (behind oil tank)

Question 2

Where does the ECU get its power from when the engine is running?

Answer 2

From its engines PMA (above 50%NG, provided it’s not faulted)

Question 3

Which engine sensors have quadruple redundancy?

Answer 3

NG (PMA redundant winding), NP (TRQ sensor provides backup signal)