TB 9-2320-302-13&P-3
A/C TROUBLESHOOTING PROCEDURES - CONTINUED
0013 00
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
A/C ELECTRICAL SYSTEM - CONTINUED
(b) Remove connector from power
1.
A/C System Does Not Function -
relay wiring harness (WP 0021 00).
Continued.
(c) Remove connector from power
relay wiring harness (WP 0021 00).
(d) Turn ignition key switch to the ON
position (TM 9-2320-363-10).
(e) Check for 24 VDC between red
1. If 24 VDC is indicated, proceed to
wire terminal and black wire
step 11.
terminal of power relay wiring
2. If 24 VDC is not indicated,
harness.
proceed to next step.
4. Verify power to power relay.
(a) Remove connector from power
relay (WP 0021 00).
(b) Check for 24 VDC on orange wire
1. If 24 VDC is indicated, proceed to
terminal on power relay connector
step 7.
to vehicle ground.
2. If 24 VDC is not indicated,
proceed to next step.
5. Verify 20 Amp fuse is not blown.
(a) Remove 20 Amp fuse from holder
(b) Check continuity between fuse
1. If fuse does not have continuity
terminals.
replace 20 Amp fuse.
2. If fuse does have continuity,
proceed to next step.
(c) Return equipment to normal
condition.
6. Verify power to fuse.
(a) Check for 24 VDC on orange wire
1. If 24 VDC is not indicated, replace
terminal (from 24 VDC power) on
orange wire from 24 VDC power.
20 Amp fuse holder to vehicle
2. If 24 VDC is indicated, replace
ground.
orange wire from 20 Amp fuse to
power relay.
(b) Return equipment to normal
condition.
7. Verify ignition power to power relay.
(a) Turn ignition key switch to the OFF
position (TM 9-2320-363-10).
0013 00-3