Garmin SA01456Wi_D Manual download pdf (Page 249)

G1000/GFC700 System Maintenance Manual – C90A/C90GT/C90GTi King Air Page 7-19

190-00682-01 Revision F

7.4.2.7 Fuel Flow Functional Test

Required test equipment:

Test Equipment Make/Requirement Model/Part Nbr

Decade Box 0-1k ohms As appropriate

Signal Generator 0-10Vdc / 0 – 1k Hz As appropriate

1. S/N LJ-1283 and after only: using a decade box or equivalent, simulate 1000 ohms into left engine

signal conditioner via left engine firewall connectors-pins J104-E and J104-F.

2. Using a signal generator, inject a 100 mV RMS / 0Hz signal into the left engine signal conditioner

via left engine firewall connectors-pins, as follows:

S/N LJ-1063 thru LJ-1282: J104-F and J104-E

S/N LJ-1283 and after: J104-V and J104-U

3. Simulate the following frequency, and verify the indication and status:

Test Point (Hz) Indication (pph) Status Configurations

140 100 +/- 10

green digital all

4. S/N LJ-1283 and after only: using a decade box or equivalent, simulate 1000 ohms into right engine

signal conditioner unit via right engine firewall connectors-pins J105-E and J105-F.

5. Repeat steps 2 and 3 using the right engine PC-920 via right engine firewall connectors-pins, as

follows:

S/N LJ-1063 thru LJ-1282: J105-F and J105-E

S/N LJ-1283 and after: J105-V and J105-U

6. If no other tests will be completed in this section, do the following:

a. Disconnect test equipment.

b. Ensure firewall connectors are reconnected.

c. Verify all engine parameters are displayed valid on the MFD with no Red X’s.

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Garmin SA01456Wi_D Manual Page 249