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
(a) Turn ignition key switch to the OFF
4.
Evaporator Assembly Works But
position (TM 9-2320-363-10).
Compressor Does Not -
(b) Set A/C fan switch to the OFF
Continued.
position (WP 0004 00).
(c) Disconnect diode harness from
chassis harness (WP 0019 00).
(d) Disconnect diode harness from
compressor clutch connector (WP
(e) Check for continuity between green 1. If continuity is indicated (less then
wire terminal of diode harness
1 Meg Ohm), replace diode.
(positive lead of meter) and vehicle 2. If continuity is not indicated
ground (negative lead of meter).
(greater then 1 Meg Ohm),
proceed to next step.
(f) Return equipment to normal
condition.
5. Check high pressure switch on receiver/
dryer for proper operation.
(a) Turn ignition key switch to the OFF
position (TM 9-2320-363-10).
(b) Set A/C fan switch to the OFF
position (WP 0004 00).
(c) Disconnect wiring connector at
high pressure switch on receiver/
dryer (yellow and green wires) (WP
(d) Install jumper wire across high
pressure switch connector.
(e) Start engine (TM 9-2320-363-10).
(f) Set A/C fan switch to the ON
position (WP 0004 00).
(g) Verify compressor clutch engages. 1. If compressor clutch does not
engage, proceed to step 7.
2. If compressor clutch engages,
proceed to next step.
(h) Return equipment to normal
condition.
0013 00-13