TM-9-2320-366-20-1

M1083 SERIES, 5 TON, 6x6, MEDIUM TACTICAL VEHICLES (MTV)

TECHNICAL MANUAL; MAINTENANCE INSTRUCTIONS; UNIT MAINTENANCE; VOLUME NO. 1 OF 5

FEBRUARY 2006

CHANGE 3

TM-9-2320-366-20-1 - Page 1262 of 1824

e56. BLACKOUT MARKER LIGHTS DO NOT ILLUMINATE

TM 9-2320-366-20-1

(2-707 Blank)/2-708

Change 1

NOTE

Perform Electrical System Troubleshooting

e1. Circuit Breaker Does Not Operate on

circuit breaker CB66 prior to beginning this

task.

START

1.

Is continuity present between

main light switch pins

F and E?

KNOWN INFO

Circuit breaker CB66 OK.

Turn signals illuminate.

POSSIBLE PROBLEMS

Faulty main light switch.

Faulty dashboard cable

assembly.

TEST OPTIONS

Continuity Test or

STE/ICE-R Test #91

REASON FOR QUESTION

If continuity is not present,

main light switch is faulty.

If continuity is present,

wire 1572 is faulty.

NO

YES

Replace main light switch (para 7-17).

Repair wire 1572 from connector PX15 socket

E to terminal board TB1 position 56 (para 2-45) or

replace WTEC II dashboard cable assembly

(para 7-10) or replace WTEC III dashboard cable

assembly (para 7-11).

INITIAL SETUP

Equipment Conditions

Engine shut down (TM 9-2320-366-10-1).

Tools and Special Tools

Tool Kit, Genl Mech (Item 46, Appendix C)

STE/ICE-R (Item 41, Appendix C)

Multimeter, Digital (Item 22, Appendix C)

Personnel Required

(2)

References

TM 9-4910-571-12&P