TM-9-2330-330-14-P

SEMITRAILER, FUEL TANKER: 5000-GALLON, FUEL-DISPENSING, AUTOMOTIVE, M969A3

TECHNICAL MANUAL; OPERATOR’S, ORGANIZATIONAL, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL (INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST)

NOVEMBER 2005

TM-9-2330-330-14-P - Page 136 of 1116

TM 9-2330-330-14&P

0019 00-2

LIGHT SYSTEMS TROUBLESHOOTING—Continued

0019 00

Table 1. Troubleshooting Procedures—Continued.

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

2.

ONE OR MORE LIGHTS

WILL NOT OPERATE—

Continued

2.

At composite stoplight box,

check for loose plug

connections or broken

wires (refer to

WP 0054 00).

If loose plugs or broken wires are

found, repair wires (refer to WP

0065 00) or tighten connections.

Verify problem is solved. If no

loose connections or broken

wires are found, go to step 3.

3.

At composite stoplight box,

insert multimeter leads to

ground wire 90 connector

and socket of suspected

bad wire(s) and check for

voltage.

4.

Disconnect connectors of

main trailer wiring harness

from socket box harness

inside composite stoplight

box. Insert multimeter

leads to ground wire 90

connector and suspected

bad wire(s) and check for

voltage.

5.

At front access hatch

cover, check suspected

bad wires for voltage at

terminal strip (refer to WP

0058 00).

If voltage is present at wires,

replace defective composite

stoplight assembly (refer to WP

0054 00). If voltage is not present

at wires, go to step 4.

If voltage is present at wires,

repair (refer to WP 0065

00)/replace (refer to WP 0061

00) defective socket box

harness. If voltage is not present,

go to step 5.

If voltage is present at terminal,

repair (refer to WP 0065

00)/replace (refer to WP 0057

00) main trailer wiring harness. If

voltage is not present at terminal

strip, troubleshoot prime mover.

END OF TASK