BLACKOUT MARKER LIGHTS DO NOT ILLUMINATE

TM 9-2320-366-20-1

e56. BLACKOUT MARKER LIGHTS DO NOT ILLUMINATE

INITIAL SETUP

Personnel Required

Equipment Conditions

(2)

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

References

Tools and Special Tools

TM 9-4910-571-12&P

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

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

Multimeter, Digital (Item 22, Appendix C)

NOTE

Perform Electrical System Troubleshooting

e1. Circuit Breaker Does Not Operate on

circuit breaker CB66 prior to beginning this

task.

START

KNOWN INFO

TEST OPTIONS

Circuit breaker CB66 OK.

Continuity Test or

Turn signals illuminate.

STE/ICE-R Test #91

Is continuity present between

POSSIBLE PROBLEMS

main light switch pins

REASON FOR QUESTION

F and E?

Faulty main light switch.

If continuity is not present,

Faulty dashboard cable

main light switch is faulty.

assembly.

If continuity is present,

wire 1572 is faulty.

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).

(2-707 Blank)/2-708

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