TM-9-2320-365-34-1

M1078 SERIES, 2 1/2-TON, 4 X 4, LIGHT MEDIUM TACTICAL VEHICLES (LMTV)

TECHNICAL MANUAL; MAINTENANCE INSTRUCTIONS; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE; VOLUME NO. 1 OF 2

AUGUST 2005

CHANGE 2

TM-9-2320-365-34-1 - Page 898 of 1334

c66. WTEC III TRANSMISSION PUSHBUTTON SHIFT SELECTOR (TPSS) DISPLAYS MAIN CODE

42, 44, 45, 46, AND/OR 69 SUB CODE 21 (PRIOR TO SERIAL NUMBER 6510032369

WITH TRANSMISSION ADAPTER CABLE ASSEMBLY) (CONT)

TM 9-2320-365-34-1

2-804

Change 1

KNOWN INFO

TEST OPTIONS

REASON FOR QUESTION

NO

YES

7.

POSSIBLE PROBLEMS

Resistance Test or

STE/ICE-R Test #91

Faulty F solenoid.

Faulty WTEC III transmission

ECU.

Circuit breaker OK.

Batteries OK.

WTEC III cab transmission

harness OK.

Transmission external wiring

harness OK.

Transmission adapter cable

assembly OK.

Transmission internal wiring

harness OK.

Is 2.5-5.0 ohms resistance

present from F solenoid

pin A to pin B?

If 2.5-5.0 ohms resistance is

not present, F solenoid is

faulty.

If 2.5-5.0 ohms

resistance is present,

WTEC III

transmission ECU is faulty.

Replace F solenoid

(para 7-8).

Replace WTEC III transmission

ECU (TM 9-2320-365-20-3).