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 1254 of 1824

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.

16.

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.

CAUTION

Read CAUTION

on following page.

Is continuity present from

WTEC III relay K25

terminal 87 to connector

J51 pin 2?

TM 9-2320-366-20-1

2-700

Change 1

NO

Repair wire 490 from WTEC III relay

K25 terminal 87 to connector J51 pin 2

(para 2-45) or replace WTEC III dashboard

cable assembly (para 7-11).

YES

If continuity is not present,

wire 490 is faulty.