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− The main bus supplies power to the ignition switch.
− The ignition switch gives a positive supply to the starter relay.
− The starter relay energizes. The relay contacts close.
− The start light comes on.
− The starter solenoid energizes. This moves the starter pinion to engage the crankshaft gear.
− The contacts in the solenoid close to complete the power circuit to the starter motor.
− The motor turns the engine.
DA20-C1 AMM
Starting
Doc # DA 201-C1
Rev. 9 80-00-00 Page 101
29 Apr 2004
TROUBLE SHOOTING
1. General
The table below lists the defects you could have with the engine starting system. If you have the
trouble detailed in the Trouble column read across to the Possible Cause column. Then do the
repair in the Repair column.
Trouble Possible Cause Repair
The starter motor will not
operate.
The airplane battery voltage is
low.
Do a battery voltage check.
Charge or replace the battery.
Starter switch circuit defective. Do a continuity test. See
Chapter 92 for circuit diagram
74-39-00. Ref Vibrator
Interlock.
Starter motor malfunction. Refer to the Teledyne
Continental Motors
Maintenance Manual.
The starter motor rotates but
does not turn the crankshaft.
Starter motor drive train
malfunction.
Refer to the Teledyne
Continental Motors
Maintenance Manual.
The starter motor rotates
slowly.
The airplane battery voltage is
low.
Do a battery voltage check.
Charge or replace the battery.
Starter motor malfunction. Refer to the Teledyne
Continental Motors
Maintenance Manual.
Starting
DA20-C1 AMM
Page 102
19 Dec 1997 80-00-00 Doc # DA 201-C1
Rev. 0
Intentionally left blank
DA20-C1 AMM
Wiring Diagrams
Doc # DA 201-C1
Rev. 0 92-TITLE Page 1
19 Dec 1997
CHAPTER 92
WIRING DIAGRAMS
Wiring Diagrams
DA20-C1 AMM
Page 2
19 Dec 1997 92-TITLE Doc # DA 201-C1
Rev. 0
Intentionally left blank
DA20-C1 AMM
Wiring Diagrams
Doc # DA 201-C1
Rev. 14 92-CONTENTS Page 1
30 Oct 2008
TABLE OF CONTENTS
CHAPTER 92-00 WIRING DIAGRAMS...................................................................................................1
1. General..........................................................................................................................1
CHAPTER 92-10 SYSTEM SCHEMATICS
DC GENERATION & DISTRIBUTION.......................................................................... 1
FLIGHT CONTROLS.................................................................................................... 2
FLIGHT CONTROLS TRIM IN STICK.......................................................................... 3
FUEL SYSTEM............................................................................................................. 4
2-SPEED ELECTRIC FUEL PUMP.............................................................................. 5
CLOCK/OAT/HOUR METER........................................................................................ 6
CANOPY WARNING.................................................................................................... 7
INTERNAL LIGHTING.................................................................................................. 8
INSTRUMENT PANEL INTEGRAL LIGHTING............................................................ 9
INTERNAL LIGHTING................................................................................................ 10
EXTERIOR LIGHTS ................................................................................................... 11
AVIONICS INTERFACE............................................................................................. 12
AVIONICS INTERFACE............................................................................................. 13
ENGINE FUEL............................................................................................................ 14
IGNITION.................................................................................................................... 15
IGNITION AND STARTING........................................................................................ 16
EGT / CHT INDICATING............................................................................................ 17
OIL TEMPERATURE & PRESSURE ......................................................................... 18
STARTING.................................................................................................................. 19
CHAPTER 92-20 OPTIONAL AVIONICS
　
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