Ignition Switch Test - Diamond DA20-C1 Maintenance Manual

DA20-C1 AMM
1. General
The following maintenance practices describe how to:
- test the ignition switch
- remove and install the ignition switch and the ignition switch cables
- remove and install the spark-plug leads.
Refer to the DA20-C1 Airplane Flight Manual for engine run instructions/data.
2.

Ignition Switch Test

WARNING:
WARNING:
1. Remove the engine cowlings.
2. Make sure that the spark plug leads are
disconnected from the spark plugs and the
battery is disconnected.
3. Do a test for the correct operation of the
ignition switch:
- Disconnect the ignition cables (P leads)
from the magnetos
- Set the ignition switch to OFF
- Set the ignition switch to R
- Set the ignition switch to L
DA201-C1
Rev 18
IGNITION - MAINTENANCE PRACTICES
Detail Steps/Work Items
DISCONNECT THE BATTERY BEFORE YOU WORK ON THE
IGNITION SWITCH. FAILURE TO DO SO COULD CAUSE INJURY TO
PERSONNEL.
MAKE SURE THAT THE ENGINE IS SAFE BEFORE YOU DO WORK
ON THE IGNITION SYSTEM. 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".
74-00-00
Key Items/References
Refer to Chapter 71-10-00.
Refer to Chapter 24-31-00.
Do a resistance test between each switch
cable and ground for each switch setting.
- Both cables zero ohms
- Left zero ohms, right open circuit
- Left open circuit, right zero ohms
Maintenance Practices
Page 201
09 May 11