TM 5-3805-298-23-1
0119
Table 1. Blower Motor Does Not Operate in One or More Speeds - Continued.
0119
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3. Using digital multimeter
Voltage 18 to 26 V Turn ignition
Blower Motor Does Not
(WP 0174), measure voltage
switch and battery disconnect switch to
Operate in One or More
between connector C-C25
OFF position (TM 5-3805-298-10).
Speeds - Continued
(WP 0012, Figure 115) terminal 2
Proceed to Test Step 11.
and terminal 3.
Voltage Less Than 18 V Proceed to
Test Step 14.
Test Step 8. Test Heater A/C Switch
in A/C Position.
1. Remove console instrument panel
for access to wiring harness
connectors (WP 0264).
2. Disconnect connector C-C16
(WP 0012, Figure 120) from heater
A/C switch (WP 0012, Figure 121).
3. Turn heater A/C switch to A/C ON
position (TM 5-3805-298-10).
4. Using digital multimeter
Resistance 5.0 Ohms or Less
(WP 0174), measure resistance
Proceed to Test Step 9.
between heater A/C switch
Resistance Greater Than 5.0 Ohms
(WP 0012, Figure 121) terminal 1
Replace heater A/C switch (WP 0264).
and terminal 2.
Proceed to Test Step 18.
Test Step 9. Test Heater A/C Switch
in Heat Position.
1. If required, remove console
instrument panel for access to
wiring harness connectors
(WP 0264).
2. Disconnect connector C-C16
(WP 0012, Figure 120) from heater
A/C switch (WP 0012, Figure 121)
if required.
3. Turn heater A/C switch to heater
ON position (TM 5-3805-298-10).
4. Using digital multimeter
Resistance 5.0 Ohms or Less
(WP 0174), measure resistance
Replace lower cab wiring harness
between heater A/C switch
(WP 0291).
(WP 0012, Figure 121) terminal 2
Proceed to Test Step 18.
and terminal 3.
Resistance Greater Than 5.0 Ohms
Replace heater A/C switch (WP 0264).
Proceed to Test Step 18.
0119-4