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 1250 of 1824

e55. BACKUP LIGHT DOES NOT ILLUMINATE (CONT)

TM 9-2320-366-20-1

2-696

Change 1

TEST OPTIONS

REASON FOR QUESTION

KNOWN INFO

Continuity Test or

STE/ICE-R Test #91

POSSIBLE PROBLEMS

Faulty WTEC III relay K25.

Faulty WTEC III dashboard

cable assembly.

Faulty rear lights cable

assembly.

Faulty WTEC III

transmission ECU.

14.

If continuity is not present,

wire 146 is faulty.

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.

Is continuity present from

WTEC III relay K34

terminal 86 to WTEC III

relay K25 terminal 86?

NO

Repair wire 146 from WTEC III

relay K34 terminal 86 to WTEC III relay

K25 terminal 86 (para 2-45) or replace WTEC III

dashboard cable assembly (para 7-11).

YES