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
2. Using digital multimeter, measure
Resistance Less Than 5.0 Ohms -
Brake Lights Do Not
resistance between rear chassis
Replace cab lower wiring harness
Operate - Continued
wiring harness connector FA-C22
(WP 0266).
(WP 0009, Figure 47) terminal 35
Connect the control indicator harness
and 29. Resistance should be
connector PE-C10 (WP 0009, Figure
less than 5.0 ohms.
288) to control indicator switch (WP
0009, Figure 289).
Remove jumper wire between con-
nector AG-C8 (WP 0009, Figure 342)
terminal 1 and connector AG-C10
(WP 0009, Figure 399) terminal 1.
Connect the rear lamps harness con-
nector AG-C8 (WP 0009, Figure 342)
to left tail light (WP 0177).
Connect the rear lamps harness con-
nector AG-C10 (WP 0009, Figure
399) to left tail light (WP 0177).
Connect the rear lamps harness con-
nector AG-C19 (WP 0009, Figure
343) to right tail light (WP 0177).
Connect the rear lamps harness con-
nector AG-C16 (WP 0009, Figure
400) to right tail light (WP 0177).
Proceed to step 3.
Resistance 5.0 Ohms or Greater -
Proceed to Test Step 7.
3. 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 7. Check for Faulty Rear
Chassis Wiring Harness.
1. Disconnect the rear lamps har-
ness connector AG-C20 (WP
0009, Figure 311) from rear chas-
sis wiring harness connector FA-
C29 (WP 0009, Figure 310) (WP
0178).
0023-107
