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 1232 of 1824

TEST OPTIONS

REASON FOR QUESTION

KNOWN INFO

5.

POSSIBLE PROBLEMS

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.

Is continuity present from

REVERSE WARNING relay

terminal 86 to terminal 85?

Continuity Test or

STE/ICE-R Test #91

If continuity is not present,

REVERSE WARNING relay

is faulty.

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 II transmission controls.

TM 9-2320-366-20-1

2-678

Change 1

NO

YES

Replace REVERSE WARNING

relay in WTEC II VIM (para 8-6).