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Engine Indicating
AMM AIRCRAFT
Electrical Connector
Angle Adaptor
Adaptor Fuel Pressure Sensor
Figure 7: Fuel Pressure Probe Installation
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Trouble-Shooting
1. General
The table below lists the defects you could have with the integrated-engine-indication system. For more data on the system refer to the equipment manufacturer’s manual.
If you have the trouble detailed in the Trouble column read across to the Possible Cause column. Then do the repair given in the Repair column.
Trouble Possible Cause Repair
No indication on any of the indicators with the engine operating or with the ALT/BAT switch set to ON. No 24 volt supply to the integrated-engine-indication system. Integrated-engine-indicator system indicator-panel inoperative. Make sure that the circuit-breaker for the engine instruments is set. Do a voltage test for 24 volts at pin 13 of connector J4 at the system data processing unit. If there is a 24 volt supply to the system then replace the indicator panel.
One of the indicators does not indicate correctly. Sensor/Transducer defective. Do a test for continuity of the cables for the relevant sensor. If the cables are serviceable, then replace the sensor. Refer to Chapter 92 for the Wiring Diagrams.
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Maintenance Practices
1. General
These maintenance practices tell you how to replace the integrated-engine-instrument panel. It also tells you how to replace the sensors and transducers for the engine indicators.
2. Remove/Install the Indicator Panel
A. Remove the Indicator Panel
Detail Steps/Work Items Key Items/References
WARNING: MAKE SURE THE ENGINE IS SAFE BEFORE YOU DO ANY WORK ON IT. IF THE ENGINE STARTS THE PROPELLER CAN CAUSE INJURY OR DEATH.
(1) Make sure that the engine is safe: S The ignition switch is set to OFF. S The ALT/BAT switch is set to OFF. S The throttle is set to IDLE. S The mixture control is set to LEAN CUT-OFF.
(2) Remove the engine cowlings. Refer to Section 71-10.
(3) Disconnect the airplane battery. Refer to Section 24-31.
(4) Remove the instrument panel cover. Refer to Section 31-10.
(5) Disconnect the electrical connector from the display unit. At the rear of the display unit.
(6) Remove the 4 screws which attach the display unit to the instrument panel. From the front of the instrument panel. Hold the display unit!
(7) Move the display unit forward and clear of the instrument panel, then clear of the airplane.
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B. Install the Indicator Panel
DA 40 Series
Detail Steps/Work Items Key Items/References
(1) Put the indicator panel in position in the instrument panel. From the rear of the panel. Take care to correctly locate the mode buttons at the bottom of the indicator panel correctly.
(2) Connect the electrical connector to the rear of the indicator panel.
(3) Install instrument panel cover. Refer to Section 31-10.
(4) Connect the airplane battery. Refer to Section 24-31.
(5) Install the engine cowlings. Refer to Section 71-10.
(6) Do a test of the indicator panel: S Set the ALT/BAT switch to ON. S Set the ALT/BAT switch to OFF. The indicators must give the correct indications.
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