TM 5-3805-293-23-2
0023
Table 1. Cab Electrical Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
19. One or Both Backup
Test Step 10. Check for Shorted
Lights Do Not Operate
Cab Lower Wiring Harness.
and/or Backup Alarm
1. Use a digital multimeter to mea-
Continuity - Connect the control indi-
Does Not Operate - Con-
sure continuity between cab lower
cator harness connector PE-C11 (WP
tinued
wiring harness connector P-C11
0009, Figure 287) to cab lower wiring
(WP 0009, Figure 286) terminal 4
harness connector P-C11 (WP 0009,
and machine ground. There
Figure 286) (WP 0283).
should be no continuity.
Proceed to Test Step 11.
No Continuity - Connect the control
indicator harness connector PE-C11
(WP 0009, Figure 287) to cab lower
wiring harness connector P-C11 (WP
0009, Figure 286) (WP 0283).
Proceed to Test Step 12.
Test Step 11. Check for Shorted
Rear Chassis 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).
0023-125