Table 8-2. WTEC III Diagnostic Code List and Description

Reading Diagnostic Codes. - TM-9-2320-366-20-40436

Table 8-2. WTEC III Diagnostic Code List and Description (Cont)

TM-9-2320-366-20-4 M1083 Series 5-Ton 6x6 Medium Tactical Vehicles (MTV) Manual
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TM 9-2320-366-20-4

Table 8-2. WTEC III Diagnostic Code List and Description

MAIN

SUB

DESCRIPTION

PERFORM TROUBLESHOOTING

CODE

TASK

ANY

ECU input voltage, low/high

f37

ANY

Throttle position sensor, failed low/high

f30

Engine speed sensor reasonableness test

f22

Turbine speed sensor reasonableness test

f23

Output speed sensor reasonableness test

f24

ANY

Shift selector fault

f39

ANY

Sump oil temperature, cold/hot

f25

ANY

Output speed reasonableness test, detected at 0

f32

speed

ANY

C3 pressure switch open

f26

ANY

Sump oil temperature sensor failed low/high

f25

ANY

Calibration compatibility or check sum fault

Replace WTEC III transmission ECU

(para 8-7).

ANY

Power interruption

f27 and f37. If fault persists, replace

WTEC III transmission ECU (para 8-7).

ANY

Hardware/software not compatible

Replace WTEC III transmission ECU

(para 8-7).

ANY

Short to battery, solenoid circuit

f27

ANY

Short to ground, solenoid circuit

f27

ANY

Open circuit, solenoid circuit

f27

ANY

Overcurrent to Solenoids

f27

ANY

Offgoing ratio test (during shift)

f31

ANY

Offgoing C3PS test (during shift)

f28

ANY

Offgoing speed test (during shift)

f33

ANY

Oncoming ratio test (after shift)

f34

ANY

Oncoming C3PS test (after shift)

f35

ANY

Range verification test

f36

ANY

Range verification C3PS test

f29

ANY

SCI (Serial Communication Interface) fault

f27. If fault persists, replace WTEC III

transmission ECU (para 8-7).

ECU malfunction

f27. If fault persists, replace WTEC III

transmission ECU (para 8-7).

ECU malfunction

f27. If fault persists, replace WTEC III

transmission ECU (para 8-7).

Change 2

8-16.1/(8-16.2 Blank)

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