Table 7-6, Oil Pressure Test Points - Garmin G1000 Nxi System Maintenance Manual

If the right engine gauge needs to be tested, perform the following:
Disconnect the J105 firewall connector.
Apply external power to aircraft and start the G1000 system in normal mode.
Inject a DC voltage into the GEA 1 by connecting the DC power source to the left engine
firewall connector-pins J105-A (LO) and J105-B (HI).
If the test input shows a correct gauge reading within the Indication tolerance in Table
7-6, troubleshoot the oil pressure sensor per the Beechcraft King Air 300 Series
Maintenance Manual.
If the test input shows an incorrect gauge reading outside the Indication tolerance in
Table 7-6 perform the following:
a. Check gauge circuit wiring for faults.
b. Replace GEA 2.
Turn off the G1000 system and remove external power from the aircraft.
If no other EIS gauge tests are needed, reconnect and safety the J105 connector and
reinstall the engine cowling(s).
Test Point (VDC)
Oil Temperature Indication Functional Check
Required test equipment:
Decade box or equivalent
If the left engine gauge needs to be tested, perform the following:
Disconnect the J104 firewall connector.
1.
Apply external power to aircraft and start the G1000 system in normal mode.
2.
Inject a resistance into GEA 1 by connecting the Decade box to the left engine firewall
3.
connector-pins J104-W and J104-X.
If the test input shows a correct gauge reading within the Indication tolerance in Table
4.
7-7, troubleshoot the oil temperature sensor per the Beechcraft King Air 300 Series
Maintenance Manual.
G1000 NXi System Maintenance Manual
King Air 300 Series
190-00716-N1
0.00 ± 0.10
1.75 ± 0.10
2.50 ± 0.10
3.75 ± 0.10
5.00 ± 0.10

Table 7-6, Oil Pressure Test Points

Name
device
Indication (PSI)
0 ± 4
70 ± 4
100 ± 4
150 ± 4
200 ± 4
Requirement
0-1k ohms
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