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
4. Using digital multimeter, measure
Resistance Less Than 5.0 Ohms -
Brake Lights Do Not
resistance between control indica-
Proceed to Test Step 5.
Operate - Continued
tor switch (WP 0009, Figure 289)
Resistance 5.0 Ohms or Greater -
terminal N and K. Resistance
Replace control indicator switch (WP
should be less than 5.0 ohms.
0283).
Proceed to step 5.
5. 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 5. Check for Faulty Con-
trol Indicator Harness.
1. Disconnect the rear lamps har-
ness connector AG-C8 (WP 0009,
Figure 342) from left tail light (WP
0177).
2. Disconnect the rear lamps har-
ness connector AG-C10 (WP
0009, Figure 399) from left tail
light (WP 0177).
3. Disconnect the rear lamps har-
ness connector AG-C19 (WP
0009, Figure 343) from right tail
light (WP 0177).
4. Disconnect the rear lamps har-
ness connector AG-C16 (WP
0009, Figure 400) from right tail
light (WP 0177).
5. Connect jumper wire between
connector AG-C8 (WP 0009, Fig-
ure 342) terminal 1 and connector
AG-C10 (WP 0009, Figure 399)
terminal 1.
6. Disconnect the control indicator
harness connector PE-C11 (WP
0009, Figure 287) from cab lower
wiring harness connector P-C11
(WP 0009, Figure 286) (WP
0283).
0023-105