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
4. Check power to relay.
1. If battery voltage is present at both
21. Condenser Fan is
(a) Remove condenser relay (WP
pins, go to Test 5.
Inoperative - Continued.
0054 00).
2. If battery voltage is not present, there
(b) Place AC/heater switch in AC ON
is an open circuit between AC fuse and
position (TM 5-3805-290-10).
condenser relay, or between AC/heater
(c) Place blower switch in HIGH
switch and condenser relay. Replace
SPEED position (TM 5-3805-290-
wiring harness in question (WP 0169
10).
00 thru WP 0175 00).
(d) Turn battery disconnect switch
and engine start switch to ON
position (TM 5-3805-290-10).
(e) Measure voltage at condenser
relay between wiring harness pin
1, circuit 158 (BR), and ground;
and between wiring harness pin 2,
circuit 521 (YL), and ground.
5. Check relay coil ground circuit.
1. If continuity is present at both pins, go
(a) Condenser relay remains
to Test 6.
removed.
2. If continuity is not present, there is an
(b) Battery disconnect switch remains
open AC condenser relay coil ground
in ON position (TM 5-3805-290-
circuit. Replace wiring harness in
10).
question (WP 0169 00 thru WP 0175
(c) Turn engine start switch to OFF
00).
position (TM 5-3805-290-10).
(d) Check continuity at condenser
relay between wiring harness pin
5, circuit 200 (BK), and ground.
6. Check condenser power circuit.
1. If continuity is present, go to Test 7.
(a) Condenser relay remains
2. If continuity is not present, there is an
removed.
open circuit between AC condenser
(b) Battery disconnect switch remains
relay and AC condenser. Replace
in ON position (TM 5-3805-290-
wiring harness in question (WP 0169
10).
00 thru WP 0175 00).
(c) Disconnect wiring harness from
condenser fan (WP 0195 00).
(d) Check continuity at condenser
relay between wiring harness pin
4, circuit 593 (GN) and condenser
fan wiring harness pin 2, circuit
593 (GN).
0008 00-54