TM 5-2410-240-23-1
0021
Table 1. Cab Troubleshooting Without Codes. - Continued.
0021
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
4. Condenser Fan(s) Do Not Oper-
10. Turn ignition switch and bat-
ate When the A/C Switch is Acti-
tery disconnect switch to OFF
vated Continued
position (TM 5-2410-240-10).
11. Disconnect harness connec-
tor T-C3 (WP 0018, Figure
244) and harness connector T-
C5 (WP 0018, Figure 246)
and #2.
12. Turn battery disconnect switch
and ignition switch to ON posi-
tion (TM 5-2410-240-10).
13. Using digital multimeter, mea-
Voltage Less Than Specified
sure for voltage (WP 0283)
Range - Proceed to Test Step 2.
between harness connector T-
Voltage Within Specified Range
C3 (WP 0018, Figure 244) ter-
- Proceed to step 14.
minals 1 and cab ground.
There should be approximately 18
to 26 volts.
14. Using digital multimeter, mea-
Voltage Less Than Specified
sure for voltage (WP 0283)
Range - Proceed to Test Step 2.
between harness connector T-
Voltage Within Specified Range
C3 (WP 0018, Figure 244) ter-
- Proceed to step 15.
minals 5 and cab ground.
There should be approximately 18
to 26 volts.
15. Using digital multimeter, mea-
Voltage Less Than Specified
sure for voltage (WP 0283)
Range - Proceed to Test Step 2.
between harness connector T-
Voltage Within Specified Range
C5 (WP 0018, Figure 246) ter-
- Proceed to step 16.
minals 1 and cab ground.
There should be approximately 18
to 26 volts.
16. Using digital multimeter, mea-
Voltage Less Than Specified
sure for voltage (WP 0283)
Range - Proceed to Test Step 2.
between harness connector T-
Voltage Within Specified Range
C5 (WP 0018, Figure 246) ter-
- Proceed to step 17.
minals 5 and cab ground.
There should be approximately 18
to 26 volts.
17. Using digital multimeter, mea-
Resistance Within Range - Pro-
sure resistance (WP 0283)
ceed to step 19.
between condenser one relay
Resistance Not Within Range -
(WP 0018, Figure 247) termi-
Replace relay (WP 0202). Proceed
nals 85 and 86.
to step 18.
There should be between 288 and
396 ohms.
0021-73