TM 5-3805-298-23-1
0121
Table 1. Condenser Fan(s) Do Not Operate When the Heater A/C Switch Is in A/C Position - Continued.
0121
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
4. Using digital multimeter
Voltage 18 to 26 V Proceed to step 5.
Condenser Fan(s) Do Not
(WP 0174), test for voltage
Operate When the Heater A/
Voltage Less Than 18 V Proceed to
between connector M-C25
C Switch Is in A/C Position -
Test Step 16.
(WP 0012, Figure 131) terminal A
Continued
and terminal C (ground).
5. Using digital multimeter
Voltage 18 to 26 V Proceed to Test
(WP 0174), test for voltage
Step 17.
between connector M-C25
Voltage Less Than 18 V Replace
(WP 0012, Figure 131) terminal B
rear frame wiring harness (WP 0295).
and terminal C (ground).
Proceed to Test Step 33.
Test Step 16. Test for Open Rear
Frame Wiring Harness.
1. Turn ignition switch and battery
disconnect switch to OFF position
(TM 5-3805-298-10).
2. Remove right lower cab access
panels (WP 0347).
3. Disconnect connector M-C1
(WP 0012, Figure 57) from
connector C-C20 (WP 0012,
Figure 56).
4. Install a jumper wire between
terminal A and terminal C of
connector M-C25 (WP 0012,
Figure 131).
5. Using digital multimeter
Resistance 5.0 Ohms or Less
(WP 0174), measure resistance
Replace lower cab wiring harness
between connector M-C1
(WP 0291).
(WP 0012, Figure 57) terminal 2
Proceed to Test Step 33.
and ground.
Resistance Greater Than 5.0 Ohms
Replace rear frame wiring harness
(WP 0295).
Proceed to Test Step 33.
0121-10
