Toyota Tundra 2005 Service - Repair - Maintenance page 2351

TR−2
TROUBLESHOOTING
PROBLEM SYMPTOMS TABLE
Use the table below to help find the cause of the problem. The numbers indicate the priority of the likely cause
of the problem. Check each part in order. If necessary, replace these parts.
Noise
Oil leakage
Shift from 2WD to 4WD (4HI) impossible
Shift from 4WD (4HI) to 4WD (4LO) impossible
Shift from 4WD (4HI) to 2WD impossible
Shift from 4WD (4LO) to 4WD (4HI) impossible
Symptom
TRANSFER − TROUBLESHOOTING
1. Oil (Level low)
2. Oil (Wrong)
3. Transfer faulty
1. Oil (Level too high)
2. Gasket (Damaged)
3. Oil seal (Worn or damaged)
4. O−ring (Worn or damaged)
1. 4WD fuse
2. Wire harness
3. 2WD/4HI switch
4. Vehicle speed sensor
5. 4WD position switch
6. 4HI indicator light
7. Actuator assembly
8. A.D.D. control system
9. 4WD control ECU
10. Transfer assembly
1. 4LO switch
2. Vehicle speed sensor
3. L4 position switch
4. Park/neutral position switch
5. 4LO indicator switch
6. Actuator assembly
7. Wire harness
8. 4WD control ECU
1. 4WD fuse
2. Wire harness
3. 2WD/4HI switch
4. Vehicle speed sensor
5. 4WD position switch
6. 4HI indicator light
7. Actuator assembly
8. A.D.D. control system
9. 4WD control ECU
10. Transfer assembly
1. 4LO switch
2. Vehicle speed sensor
3. L4 position switch
4. Park/neutral position switch
5. 4LO indicator switch
6. Actuator assembly
7. Wire harness
8. 4WD control ECU
Suspected Area
TR09F−03
See page
TR−5
TR−5
TR−6
TR−5
TR−6
TR−36
TR−6
−
−
TR−39
BE−86
TR−7
BE−86
TR−39
SA−59
TR−39
TR−6
TR−39
BE−86
TR−7
DI−993
BE−86
TR−39
−
TR−39
−
−
TR−39
BE−86
TR−7
BE−86
TR−39
SA−59
TR−39
TR−6
TR−39
BE−86
TR−7
DI−993
TR−7
TR−39
−
TR−39