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ECU.
Make sure that the bayonet lockings are
engaged.
%
(7) If a new ECU is installed:
% S Check the Software Revision and the
% Mapping by use of a Laptop Computer.
Verify with the information given by the
Engine Manufacturer.
% (8) Install the pilot’s seat. Refer to Section 25-10.
% (9) Do a ground run-up. Refer to Section 71-01.
AIRCRAFT
DA 40 Series
AMM
Engine Controls
Doc # 6.02.01
Rev. 5 76-01-00 Page 207
20 Sep 2007
4. Remove/Install the Engine Control System Harness
A. Remove the Engine Control System Harness
Detail Steps/Work Items Key Items/References
WARNING: MAKE THE ENGINE IS SAFE BEFORE YOU DO ANY WORK ON
HARNESS. IF THE ENGINE STARTS THE PROPELLER CAN CAUSE
INJURY OR DEATH.
(1) Make sure that the engine is safe:
S Set the ELECTRIC MASTER key switch to
OFF.
S Set the ENGINE MASTER switch to OFF.
S Set the power lever to IDLE.
(2) Remove the engine cowlings. Refer to Section 71-11.
(3) Disconnect the airplane main battery. Refer to Section 24-34.
(4) Remove the coolant radiator. Refer to Section 75-01.
(5) Remove the left pilot’s seat. Refer to Section 25-10.
(6) Remove the instrument panel cover. Refer to Section 25-10.
(7) Remove the power lever. Refer to Paragraph 2.A.
(8) Release the 2 electrical connectors from the
ECU.
Refer to Figure 3.
(9) Release the connections at these terminal
blocks:
S Glow.
S ECU Bus.
S Instruments and Annunciator Panel.
Behind the instrument panel.
AIRCRAFT
Engine Controls DA 40 Series
AMM
Page 208
20 Sep 2007 76-01-00 Doc # 6.02.01
Rev. 5
Crankshaft 1 Sensor
Camshaft 2 Sensor Camshaft 1 Sensor
Fuel Rail
Pressure Sensor
Fuel
Injectors
Fuel
Injector
Fuel
Injector
Figure 4: Sensors on the Right Side of the Engine
AIRCRAFT
DA 40 Series
AMM
Engine Controls
Doc # 6.02.01
Rev. 5 76-01-00 Page 209
20 Sep 2007
Detail Steps/Work Items Key Items/References
(10) Disconnect the engine wire harness and bonding
cables from these electrical sensors:
S Crankshaft 1.
S Crankshaft 2.
S Camshaft 1.
S Camshaft 2.
S Coolant temperature.
S Oil temperature.
S Oil pressure.
S Manifold air temperature.
S Fuel rail pressure regulator.
S Fuel rail pressure sensor.
S Propeller governor.
S Gear temperature.
S Waste gate valve solenoid.
S Fuel injectors.
S Glow plugs.
S Waste gate control valve.
At the front right crank case.
At the front left crank case.
On inlet valve cover between cyl. 3 & 4.
On inlet valve cover between cyl. 1 & 2.
At the thermostat valve.
At the bottom of the oil case.
At the rear side of the oil filter housing.
On the intercooler outlet pipe.
At the rear end of the fuel rail.
At the front side of the fuel rail.
At the right side of the reduction gear.
At top left of front bearing reduction gear.
At the lower crankshaft cover.
At each fuel injector.
At the lower crankshaft cover.
At the lower crankshaft cover.
(11) Remove the cable-ties and clamps that attach the
cable harness to the engine and structure.
Make a note of the type and location of
each attachment.
(12) Remove the shields for the feed-through at the
firewall.
(13) Carefully move the harness aft through the
firewall.
Take care not to damage the
connectors.
(14) Remove the harness from the airplane.
AIRCRAFT
Engine Controls DA 40 Series
AMM
Page 210
20 Sep 2007 76-01-00 Doc # 6.02.01
Rev. 5
Manifold Temperature
Sensor
Manifold Pressure
Hose to ECU
Oil Temperature Sensor Oil Pressure Sensor
Propeller CSU
Pressure Sensor
Propeller CSU
Control
Coolant Temperature
Sensor
Gearbox Temperature Crankshaft 2 Sensor
Sensor
Figure 5: Sensors on the Left Side of the Engine
AIRCRAFT
DA 40 Series
AMM
Engine Controls
Doc # 6.02.01
Rev. 5 76-01-00 Page 211
20 Sep 2007
B. Install the Engine Control System Harness
Detail Steps/Work Items Key Items/References
WARNING: MAKE THE ENGINE IS SAFE BEFORE YOU DO ANY WORK ON
HARNESS. IF THE ENGINE STARTS THE PROPELLER CAN CAUSE
INJURY OR DEATH.
(1) Make sure that the engine is safe:
S Set the ELECTRIC MASTER key switch to
OFF.
S Set the ENGINE MASTER switch to OFF.
S Set the power lever to IDLE.
(2) Put the harness in position in the cockpit.
　
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