TM 5-2410-240-23-1
0021
Table 1. Cab Troubleshooting Without Codes. - Continued.
0021
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. Little or No Warm Air Flow When
19. Using digital multimeter, test
No Continuity - Replace fuse
for continuity (WP 0283)
Heater Control Knob is Set for
panel harness (WP 0201). Ensure
between harness connector
Maximum Heating Continued
all harness connectors are recon-
FP-C5 (WP 0018, Figure 170)
nected. Verify proper operation of
terminal 18 and fuse #9 (TM 5-
machine (TM 5-2410-240-10).
2410-240-10).
Continuity - Proceed to step 20.
20. Using digital multimeter, test
No Continuity - Replace 24 to 12
for continuity (WP 0283)
Volt converter (WP 0216). Ensure
between harness connector
all harness connectors are recon-
FP-C5 (WP 0018, Figure 170)
nected. Verify proper operation of
terminal 18 and all other termi-
machine (TM 5-2410-240-10).
nals in harness connector FP-
Continuity - Replace fuse panel
C5 (WP 0018, Figure 170).
harness (WP 0201). Ensure all
harness connectors are recon-
nected. Verify proper operation of
machine (TM 5-2410-240-10).
N OT E
2. HVAC Blower Motor Does Not
Function in One or More Speeds
This test is designed to diagnosis one fault at a time. If system
has multiple component failures, it may be necessary to perform
this test again after making initial repair.
Tag wiring harnesses to aid installation.
Test Step 1.
1. Turn ignition switch and bat-
tery disconnect switch to OFF
position (TM 5-2410-240-10).
2. Connect MSD to machine (WP
3. Turn battery disconnect switch
and ignition switch to ON posi-
tion (TM 5-2410-240-10).
Select Machine Control D6K.
N OT E
Wait at least 30 seconds in order for diagnostic codes to become
active.
4. Monitor diagnostic codes with
Diagnostic/Event Codes - Repair
MSD (WP 0013). Check and
active code (WP 0013).
record any active diagnostic or
No Diagnostic/Event Codes -
event codes.
Proceed to step 5.