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
7.
Using digital multimeter, measure
Resistance Less Than 5.0 Ohms -
Brake Lights Do Not
resistance between cab lower wir-
Replace control indicator harness
Operate - Continued
ing harness connector P-C11 (WP
(WP 0283).
0009, Figure 286) terminal 8 and
Remove jumper wire between con-
machine ground. Resistance
nector AG-C8 (WP 0009, Figure 342)
should be less than 5.0 ohms.
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 8.
Resistance 5.0 Ohms or Greater -
Proceed to Test Step 6.
8. 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 6. Check for Faulty Cab
Lower Wiring Harness.
1. Disconnect the rear chassis wir-
ing harness connector FA-C22
(WP 0009, Figure 47) from cab
lower wiring harness connector P-
C69 (WP 0009, Figure 46) (WP
0266).
0023-106
