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 1226 of 1824

TEST OPTIONS

REASON FOR QUESTION

Voltage Test or

STE/ICE-R Test #89

2.

WARNING

CAUTION

Read WARNING and

CAUTION on

following page.

Is 12 VDC present at

connector P87?

KNOWN INFO

POSSIBLE PROBLEMS

Faulty backup light

assembly.

Faulty dashboard cable

assembly.

Faulty WTEC II cab

transmission harness.

Faulty rear lights cable

assembly.

Faulty REVERSE

WARNING relay in WTEC

II VIM.

Faulty WTEC II

transmission ECU

pushbutton shift selector.

Faulty WTEC III relay K25.

Faulty WTEC III

transmission ECU.

e55. BACKUP LIGHT DOES NOT ILLUMINATE (CONT)

Replace backup light

assembly (para 7-36).

Circuit breaker CB70 OK.

Circuit breaker CB73 OK.

Both turn signals illuminate.

Engine starts.

Transmission reverse (R)

range OK.

Backup light lamps OK.

TM 9-2320-366-20-1

2-672

Change 1

NO

YES

Go to step 3 of this fault.

If 12 VDC is present,

backup

light assembly is faulty.