C4, TM 9-2350-230-12
TABLE 8-14. PERSONNEL HEATER CIRCUITS (FIGURE 8-11) - CONTINUED
CIRCUIT
TEST POINTS
COMPONENT
NUMBER FROM
TO
(ohms)
CIRCUIT
REMARKS
HEATER
Igniter
Igniter
Grd
Approx. 0. 5
Through igniter
Zero or high reading in-
term
Strap
dicates defective igniter.
Flame Detector
P5
P6
O
Any other reading indi-
Switch (Cold
P5
P7
O
Through switch
cates switch out of adjust.
position only)
P8
P9
INF
ment or defective.
Overheat Switch
Term. 9
Term
O
Through switch
INF indicates defective
30
switch
Resistor "A"
Across resistor
Approx. 0.4
Through resistor
INF indicates open
(Blower Resistor:
terminals
resistor
Resistor "B"
Across resistor
Approx. 0. 6
Through resistor
INF indicates open
(Igniter Resistor)
terminals
resistor
Resistor "C"
Across resistor
Approx. 1.0
Through resistor
INF indicates open
(Igniter Resistor)
terminals
resistor
Shutoff Solenoid
Lead#30 Case
Approx. 140
Through solenoid to
High or low reading in-
Disconnected
grd
dicates defective solenoid
from overheat
switch
Restriction Solen-
P3B
Case
Approx. 70
Through solenoids in
High or low reading indi-
oid and Air Valve
parallel to grd
cates one or the other
Solenoid
.
solenoid is defective
TABLE 8-14.1. WINTERIZATION KIT COOLANT HEATER CIRCUITS (FIGURE 8-11.1)
CIRCUIT
TEST POINTS
COMPONENT
NUMBER FROM
TO
(ohms)
CIRCUIT
REMARKS
Disconnect power lead at P1, and use voltmeter to check power supply from battery at P1.
Leave connector P1 disconnected during all ohmeter tests.
WIRING
Power Supply
561
P1
P2D
O
Through lead and
circuit breaker
Harness
564
P2D
P3D
O
Through lead
565
P2E
P3E
O
Through Lead
565
P3E
P10
O
Through lead to
coolant pump
562
P2C
P3C
O
Through lead
Resistance indicates
563
P2B
P3B
O
Through lead
defective circuit
563A
P2A
P4
0
Through lead to
fuel pump
8-66
