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 1248 of 1824

TEST OPTIONS

REASON FOR QUESTION

Voltage Test or

STE/ICE-R Test #89

KNOWN INFO

13.

POSSIBLE PROBLEMS

Faulty WTEC III relay K25.

Faulty WTEC III dashboard

cable assembly.

Faulty rear lights cable

assembly.

Faulty WTEC III

transmission ECU.

Is 12 VDC present at

WTEC III relay K25

terminal 30?

e55. BACKUP LIGHT DOES NOT ILLUMINATE (CONT)

Circuit breaker CB70 OK.

Circuit breaker CB73 OK.

Both turn signals illuminate.

Engine starts.

Transmission reverse (R)

range OK.

Backup light lamps OK.

Backup light assembly OK.

WTEC III transmission controls.

If 12 VDC is not present,

wire 1903 is faulty.

WARNING

Read WARNING

on following page.

TM 9-2320-366-20-1

2-694

Change 1

NO

Repair wire 1903 from WTEC III

relay K25 terminal 30 to circuit breaker

CB73 terminal 8 (para 2-45) or replace WTEC III

dashboard cable assembly (para 7-11).

YES