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− MIXTURE on the right side
The aft cover also has the trim switch at the rear.
Indicating Systems
DA20-C1 AMM
Page 8
30 Apr 2009 31-10-00 Doc # DA201-C1
Rev. 15
Figure 3: Control Panel in the Center Console
DA20-C1 AMM
Indicating Systems
Doc # DA201-C1
Rev. 0 31-10-00 Page 101
19 Dec 1997
TROUBLE-SHOOTING
1. General
Use the data below to trouble-shoot the indicating and control panel systems. See the related
Chapter for other data on an instrument or switch.
Complaint Possible Cause Remedy
Indication incorrect. Sensor defective.
Indicator defective.
High resistance or open
connection in the electrical
wiring from the sensor.
Replace the sensor.
Replace the indicator.
Do resistance and continuity
tests between the indicator
and the sensor. Repair the
defective connection or wire.
Indicating Systems
DA20-C1 AMM
Page 102
30 Apr 2009 31-10-00 Doc # DA201-C1
Rev. 15
Figure 1: Instrument Panel Installation
DA20-C1 AMM
Indicating Systems
Doc # DA201-C1
Rev. 0 31-10-00 Page 201
19 Dec 1997
MAINTENANCE PRACTICES
1. General
These maintenance practices tell you how to remove/install the instrument and control panels. See
the related Chapter for data about indicators in other systems.
WARNING: YOU MUST MAKE SURE THAT THE ENGINE IS SAFE BEFORE YOU
REMOVE THE INSTRUMENT PANEL. DISCONNECT THE SPARK
PLUG LEADS. MAKE SURE THAT:
- THE IGNITION SWITCH IS IN THE “OFF” POSITION.
- THE “P” LEADS ARE GROUNDED.
- THE THROTTLE IS SET TO “CLOSED”.
- THE MIXTURE CONTROL IS SET TO “LEAN CUT-OFF”.
2. Remove/Install the Instrument Panel
A. Remove the Instrument Panel
Detail Steps/Work Items Key Items
(1) Disconnect the battery. Refer to chapter 24-31
(2) Remove the engine cowlings. Refer to chapter 71-10
(3) Disconnect the spark plug leads from the
spark plugs.
(4) Remove the instrument panel cover. Refer to chapter 25-10
(5) Disconnect the pitot and static pipes. And
disconnect the stall warning pipe.
Pitot at the airspeed indicator.
Static at the Tee connector.
Stall Warning at the horn. Catch the ball
valve.
(6) Disconnect the cable to the RPM indicator.
(7) Remove the nut from the OAT temperature
sensor.
In the right NACA duct.
(8) Put the temperature sensor on the
instrument panel shelf.
(9) Disconnect the coax cable from the diplexer. On the instrument panel shelf if installed.
(10) Disconnect the coax cable(s) from the VHF
COMM 2 or GPS/COMM.
For dual VHF installations only.
Indicating Systems
DA20-C1 AMM
Page 202
30 Apr 2009 31-10-00 Doc # DA201-C1
Rev. 15
Detail Steps/Work Items Key Items
(11) Disconnect the coax cable from the GPS. For basic GPS installation only.
(12) Disconnect the coax cable from the
transponder.
(13) Disconnect the 2 multi-pin electrical
connectors.
On the instrument panel shelf.
(14) Cut the ty-wraps that hold the vacuum hose
to the airframe (if installed).
(15) Disconnect the vacuum hose at the vacuum
regulator (if installed).
On the aft face of the firewall.
(16) Disconnect the 2 hoses from the air filter. On the aft face of the firewall.
(17) Remove the wire clamps from the firewall.
(18) Disconnect the main power cable from the
starter relay to the instrument panel.
On the front face of the firewall.
(19) Disconnect the starter annunciator wire from
the starter relay to the instrument panel.
On the front face of the firewall.
(20) Disconnect these cables in the engine
compartment:
− Generator.
− Oil pressure.
− Oil temperature.
− Fuel pressure.
− EGT.
− CHT.
− Ignition switch cables.
Refer to chapter 24-30
Refer to chapter 79-00
Refer to chapter 79-00
Refer to chapter 73-00
Refer to chapter 77-00
Refer to chapter 77-00
Refer to chapter 74-00
DA20-C1 AMM
Indicating Systems
Doc # DA201-C1
Rev. 0 31-10-00 Page 203
19 Dec 1997
Detail Steps/Work Items Key Items
(21) Remove the firewall shield from around the
wires. Carefully pull these cables through
the firewall.
− Generator.
− Oil pressure.
− Oil temperature.
− Fuel pressure.
− EGT.
− CHT.
Ignition switch cables.
Instrument panel ground cable.
(22) Release the Blind Encoder from the
mounting tray.
(23) Remove 7 nuts and washers which hold the
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