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 1256 of 1824

e55. BACKUP LIGHT DOES NOT ILLUMINATE (CONT)

TM 9-2320-366-20-1

2-702

Change 1

TEST OPTIONS

REASON FOR QUESTION

KNOWN INFO

Continuity Test or

STE/ICE-R Test #91

If continuity is not present,

wire 490 is faulty.

17.

POSSIBLE PROBLEMS

Faulty rear lights cable

assembly.

Faulty WTEC III relay K25.

Faulty WTEC III

transmission ECU.

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.

WTEC III dashboard cable

assembly OK.

CAUTION

Read CAUTION

on following page.

Is continuity present from

connector P51 socket 2

to connector P87?

NO

Repair wire 490 from connector

P51 socket 2 to connector P87 (para 2-45)

or replace rear lights cable assembly

(para 7-84 or 7-104).

YES