TM 5-3805-293-23-2
0023
Table 1. Cab Electrical Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
17. One or Both Blackout
Test Step 3. Check for Faulty Right
Brake Lights Do Not
Blackout Brake Light.
Operate - Continued
1. Disconnect the rear lamps har-
ness connector AG-C19 (WP
0009, Figure 343) from right tail
light (WP 0177).
2. Disconnect the rear lamps har-
ness connector AG-C16 (WP
0009, Figure 400) from right tail
light (WP 0177).
3. Use a digital multimeter, test for
Voltage Between 18 and 26 Volts -
voltage between connector AG-
Replace Right Tail Light (WP 0177).
C19 (WP 0009, Figure 343) termi-
Proceed to step 4
nals 1 and AG-C16 (WP 0009,
Voltage Less Than 18 Volts -
Figure 400) terminal 1 while an
Replace rear lamps harness (WP
assistant applies the service
0178).
brake. Voltage should be 18 to 26
Proceed to step 4.
volts.
4. Turn battery disconnect switch to
One or Both Blackout Brake Lights
the ON position and control indi-
Do Not Operate - Repeat trouble-
cator switch to position B.O.
shooting from the beginning.
DRIVE (TM 5-3805-293-10).
Both Blackout Brake Lights Oper-
Have an assistant apply the
ate - Troubleshooting complete.
brakes and observe the blackout
brake lights from the rear of the
machine
Test Step 4. Check for Faulty Con-
trol Indicator Switch.
1. Turn ignition switch and battery
disconnect switch to the OFF
position (TM 5-3805-293-10).
2. Disconnect the control indicator
harness connector PE-C10 (WP
0009, Figure 288) from control
indicator switch (WP 0009, Figure
289).
3. Using digital multimeter, measure
Resistance Less Than 5.0 Ohms -
resistance between control indica-
Proceed to step 4.
tor switch (WP 0009, Figure 289)
Resistance 5.0 Ohms or Greater -
terminal F and A. Resistance
Replace control indicator switch (WP
should be less than 5.0 ohms.
0283).
Proceed to step 5.
0023-104
