TM 5-3805-290-23-1
TROUBLESHOOTING WITHOUT A DIAGNOSTIC CODE - CONTINUED
0008 00
Table 2. Electrical System Troubleshooting - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
6. Check AC compressor clutch power
1. If battery voltage is present, go to Test
19. Air Conditioning
circuit.
7.
Compressor Does Not Run
(a) Wiring harness remains
2. If battery voltage is not present, there
(Blower Operates
disconnected from AC pressure
is an open circuit between AC
Correctly) - Continued.
switch (WP 0193 00).
compressor and AC pressure switch.
(b) Disconnect wiring harness to AC
Replace wiring harness in question
compressor clutch (WP 0192 00).
(WP 0169 00 thru WP 0175 00).
(c) Use a jumper wire to short AC
pressure switch wiring harness
pins together.
(d) Turn battery disconnect switch
and engine start switch to ON
position (TM 5-3805-290-10).
(e) Turn AC/heater switch to AC ON
position (TM 5-3805-290-10).
(f) Measure voltage between AC
compressor clutch wiring harness
1, circuit 589 (GN), and ground.
7. Check AC compressor clutch power
1. If battery voltage is present, go to Test
circuit.
8.
(a) Jumper wire remains in place.
2. If battery voltage is not present, replace
(b) Connect wiring harness to AC
AC compressor (WP 0192 00).
compressor clutch (WP 0192 00).
(c) Disconnect wiring harness from
thermostatic switch located in
blower case (WP 0196 00).
(d) Battery disconnect switch and
engine start switch remain in ON
position (TM 5-3805-290-10).
(e) Turn AC/heater switch to AC ON
position (TM 5-3805-290-10).
(f) Measure voltage at back of
connector between AC
compressor clutch wiring harness
pin 2, circuit 522 (WH), and
ground.
0008 00-48
