TM 5-3805-293-23-2
0022
Table 1. Cab Heating, Air Conditioning, and 12 Volt Power Inverter Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3. Blower Motor Does Not
2. Disconnect cab upper wiring har-
Turn On In One or More
ness connector R-C22 (WP 0009,
Speeds - Continued
Figure 386) from climate control
panel (WP 0009, Figure 385) (WP
0293).
3. Turn battery disconnect switch
and ignition switch to the ON posi-
tion (TM 5-3805-293-10).
4. Using digital multimeter, test for
Voltage 18 to 26 Volts - Proceed to
voltage between harness connec-
step 5.
tor R-C22 (WP 0009, Figure 386)
Voltage Less Than 18 Volts - Pro-
terminal 1 and machine ground.
ceed to step 6.
Voltage should be 18 to 26 volts.
5. Using digital multimeter, test for
Voltage 18 to 26 Volts - Replace cli-
voltage between harness connec-
mate control panel (WP 0293).
tor R-C22 (WP 0009, Figure 386)
Proceed to step 18.
terminal 1 and terminal 7.
Voltage Less Than 18 Volts - Pro-
Voltage should be 18 to 26 volts.
ceed to step 6.
6. Disconnect cab upper wiring har-
ness connector R-C1 (WP 0009,
Figure 33) from cab lower wiring
harness connector P-C3 (WP
0009, Figure 34) (WP 0266).
7. Using digital multimeter, test for
Voltage 18 to 26 Volts - Proceed to
voltage between harness connec-
step 8.
tor P-C3 (WP 0009, Figure 34)
Voltage Less Than 18 Volts -
terminal 5 and machine ground.
Replace cab lower wiring harness
Voltage should be 18 to 26 volts.
(WP 0266).
Connect cab upper wiring harness
connector R-C22 (WP 0009, Figure
386) to climate control panel (WP
0009, Figure 385) (WP 0293).
Proceed to step 18.
8. Turn ignition switch and battery
disconnect to the OFF position
(TM 5-3805-293-10).
9. Connect cab upper wiring har-
ness connector R-C1 (WP 0009,
Figure 33) to cab lower wiring har-
ness connector P-C3 (WP 0009,
Figure 34) (WP 0266).
0022-16
