TM 10-3930-675-24-1
TROUBLESHOOTING PROCEDURES (NON-ERROR CODE) - CONTINUED
0007 00
Table 2. Electrical Troubleshooting Procedures (Non-Error Code) - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
18. Blower Motor Not Working.
1. Check circuit breaker F11 for a. Reset circuit
breaker
as
trip. (For rear
blower
required.
troubleshooting, go to step 8.)
b. If breaker does not reset, use
the wiring diagram to check
circuit for short to ground (WP
shorted or grounded harnesses
(WP 0113 00).
c. Replace damaged or faulty
circuit breaker (WP 0074 00).
2. Remove cab side filter and Replace damaged or binding
check blower for damage or blower motor/assembly (WP
the blower wheel for binding 0191 00).
(WP 0191 00).
3. Remove the kick panel in front Repair or replace damaged
of the steering column and harnesses or connectors (WP
check blower assembly wiring 0113 00).
and connectors for damage
(WP 0191 00).
4. Check voltage (24V) at X9 pin a. If no voltage (24V) is found at
X9 pin 9, check circuit breaker
6 and 9 with the ignition on
F11 and continuity of wires
while operating the fan control
A99 and 99 (WP 0048 00-39).
switch. There should be varied
voltage (14 to 24V) at pin 6.
b. If no voltage (14 to 24V) is
found at X9 pin 6 at any on
speed, remove fan control
switch
and
check
for
continuity (WP 0113 00).
c. Replace damaged or faulty
switch (WP 0073 00).
d. If switch is good, check the
continuity of wires 96, 97, 98,
A96, A97, and A98 (WP 0048
00-39).
e. Repair or replace damaged
wires or connectors (WP 0113
00).
0007 00-47
