TM 5-3805-298-23-1
0120
Table 1. Air Conditioning (A/C) Compressor Will Not Engage.
0120
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
NOTE
Air Conditioning (A/C)
Compressor Will Not
Always inspect wiring harness connectors that are involved in the circuit.
Engage
Poor connections can often be the cause of a problem in an electrical
circuit. Verify that all connections in the circuit are clean and secure and
that all connections are in good condition. If a problem with the
connection is found, correct the problem and verify that this malfunction
or diagnostic code is active before performing this procedure.
Perform open or short-circuit test at each wiring harness connection to
identify the correct wiring harness to replace.
Tag all wiring harnesses to aid in installation.
Perform this test only if condition is active.
Test Step 1. Inspect Blowers Circuit
Breaker.
1. Turn ignition switch and battery
disconnect switch to OFF position
(TM 5-3805-298-10).
2. Inspect blowers circuit breaker in
Blower Circuit Breaker Not Tripped
fuse box (TM 5-3805-298-10).
Proceed to Test Step 2.
Blower Circuit Breaker Tripped
Reset blowers circuit breaker (TM 5-
3805-298-10). If blowers circuit breaker
does not reset, replace blowers circuit
breaker (TM 5-3805-298-10) and
proceed to Test Step 14.
If blowers circuit breaker resets,
proceed to Test Step 9.
Test Step 2. Test for Voltage to the
Compressor.
1. Disconnect connector EN-C10
(WP 0012, Figure 122) from
compressor.
2. Turn battery disconnect switch ON
and start the machine (TM 5-3805-
298-10).
3. Turn heater A/C switch to A/C ON
position (TM 5-3805-298-10).
4. Turn heater control knob to
maximum cold (TM 5-3805-298-
10).
