TM 5-3805-291-23-1
TROUBLESHOOTING WITHOUT A DIAGNOSTIC CODE - CONTINUED
0008 00
Table 8. AC System Troubleshooting - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3. Check blend door actuator circuits.
1. If continuity is present, go to Test 4.
1.
Temperature of Air Flow is
(a) Disconnect wiring harness from
2. If continuity is not present, there is an
Partially Cool - Continued.
HVAC temperature control switch
open circuit between HVAC
(WP 0055 00).
temperature control switch and blend
(b) Check for continuity with
door actuator. Replace wiring harness
resistance between blend door
in question (WP 0195 00 thru WP 0201
actuator pin 3, circuit 200 (BK),
00).
harness side and HVAC
temperature control switch pin A,
circuit A523 (PU), harness side.
4. Check blend door actuator circuits.
1. If continuity is present, go to Test 5.
(a) Check for continuity between
2. If continuity is not present, there is an
blend door actuator pin 4, circuit
open circuit between HVAC
A524 (BR), harness side and
temperature control switch and blend
HVAC temperature control switch
door actuator. Replace wiring harness
pin B, circuit A524 (BR), harness
in question (WP 0195 00 thru WP 0201
side.
00).
5. Check blend door actuator circuits.
1. If continuity is present, replace HVAC
(a) Check for continuity with
temperature control switch (WP 0055
resistance between blend door
00).
actuator pin 1, circuit 592 (BU),
2. If continuity is not present, there is an
harness side and HVAC
open circuit between HVAC
temperature control switch pin C,
temperature control switch and blend
circuit A525 (GN), harness side.
door actuator. Replace wiring harness
in question (WP 0195 00 thru WP 0201
00).
3. If problem still exists, replace blend
door actuator (WP 0052 00).
N OT E
Leaks in refrigerant circuit will cause system to be low on refrigerant.
0008 00-93
