TM 5-3805-298-23-1
0121
Table 1. Condenser Fan(s) Do Not Operate When the Heater A/C Switch Is in A/C Position - Continued.
0121
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Test Step 22. Inspect A/C BKR Circuit
Condenser Fan(s) Do Not
Breaker.
Operate When the Heater A/
1. Turn ignition switch and battery
C Switch Is in A/C Position -
disconnect switch to OFF position
Continued
(TM 5-3805-298-10).
2. Inspect A/C BKR circuit breaker in
A/C BKR Circuit Breaker Not Tripped
Proceed to Test Step 23.
fuse box (TM 5-3805-298-10).
A/C BKR Circuit Breaker Tripped
Reset A/C BKR circuit breaker
(TM 5-3805-298-10). If A/C BKR circuit
breaker does not reset, replace A/C
BKR circuit breaker (TM 5-3805-298-
10) and proceed to Test Step 33.
If A/C BKR 2 circuit breaker resets,
proceed to Test Step 27.
Test Step 23. Test for Voltage at
Primary A/C Condenser Fans.
1. Disconnect connector MA-C1
(WP 0012, Figure 134) from
primary A/C condenser fan 1.
2. Disconnect connector MA-C3
(WP 0012, Figure 135) from
primary A/C condenser fan 2.
3. Turn battery disconnect switch ON
and start the machine (TM 5-3805-
298-10).
4. Turn heater A/C switch to A/C ON
position (TM 5-3805-298-10).
5. Turn heater control knob to
maximum cold (TM 5-3805-298-
10).
6. Using digital multimeter
Voltage 18 to 26 V Proceed to step 7.
(WP 0174), test for voltage
Voltage Less Than 18 V Proceed to
between connector MA-C1
Test Step 24.
(WP 0012, Figure 134) terminal 1
and terminal 2 (ground).
7. Using digital multimeter
Voltage 18 to 26 V Replace primary
(WP 0174), test for voltage
A/C condenser fans 1 and 2 (WP 0417).
between connector MA-C3
Proceed to Test Step 33.
(WP 0012, Figure 135) terminal 1
Voltage Less Than 18 V Replace air
and terminal 2 (ground).
conditioning condenser fans wiring
harness (WP 0418).
Proceed to Test Step 33.
0121-14
