C4, TM 9-2350-230-12
TABLE 8-13. BILGE PUMP CIRCUITS (FIG. 8-10) - CONTINUED
CIRCUIT
TEST POINTS
RESISTANCE
COMPONENT
NUMBER FROM TO
(ohms)
CIRCUIT
REMARKS
CAUTION: Disconnect battery positive and negative cables before making resistance or continuity tests.
Rear bilge pump
722A
P5-C
P7
0
Circuit from relay
Infinity indicates open
relay to left
722B
through circuit
circuit, defective lead
pump lead
breaker to pump
or circuit breaker.
Rear bilge pump
722A
P5-C
P8
0
Circuit from relay
Infinity indicates open
relay to right
722C
through circuit
circuit, defective lead
pump lead
breaker to pump
or circuit breaker.
Left rear bilge
722B
P7
GND
.35-.70
Circuit through pump
Resistance variation
pump
greater than. 70 OHMS
or less than . 35 OHMS
indicates
defective
pump
Right rear bilge
722C
P8
GND
.35-. 70
Circuit through pump
Resistance variation
pump
greater than .70 OHMS
or less than. 35 OHMS
indicates defective
pump.
TABLE 8-14. PERSONNEL HEATER CIRCUITS (FIG. 8-11)
CIRCUIT
TEST POINTS
RESISTANCE
COMPONENT
NUMBER FROM TO
(ohms)
CIRCUIT
REMARKS
Disconnect power lead at P1, and use voltmeter to check voltage from battery at 1.
Leave connector P1 disconnected during all ohmeter tests.
WIRING
Power supply
561
P1
P2D
O
Through lead and
circuit breaker
Harness
563
P2B
P3B
O
Through lead
562
P2C
P3C
O
Through lead
565
P2E
P3E
O
Through lead
564
P2D
P3D
O
Through lead
Resistance indicates
560
P3A
GRD
O
External grd. circuit
defective circuit.
563A
P2A
P4
O
Through lead to fuel
pump
---
P3A
Case
O
Internal grd. circuit
CONTROLS
Start-Off-Run
P2D
P2A
INF
Switch (OFF)
P2D
P2C
INF
Start-Off-Run
P2D
P2A
O
Any other reading
Switch (START)
P2D
P2C
O
indicates defective switch
Start -Off -Run
P2A
P2E
O
Switch (RUN)
(Leave Start-Off-Run Switch in RUN):
Hi-Lo Switch(L(O
P2B
P2E
INF
Any other reading
indicates
defective switch
HI-Lo Switch (HI)
P2B
P2E
O
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