Subaru XT 1988 Service Manual page 673

3-2 AUTOMATIC TRANSMISSION AND DIFFERENTIAL
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Troubleshooting Chart
Reference No.
Symptom
Probable cause
On-car check Unit check
Starter runs in R, 0 or 2 range, but
1,2,6,7,9
Transmission exterior parts:
not in P or N range.
Noise is emitted in N or Prange. 72,65,31 40
1. Inhibitor switch out of adjustment
2. Faulty inhibitor switch
Noise (shudder) is emitted when
72
3. Faulty control unit
car starts.
4. Faulty car-revolution sensor 1
5. Faulty car-revolution sensor 2
Noise is emitted in 0
1
range. 73 37,60,61
6. Select cable out of adjustment
Noise is emitted in O
2
range.
73 37,60,61
7. Faulty select lever
8. FWD fuse remains installed
Noise is emitted in 0
3
range. 73 37,61 9. Faulty starter motor or harness
10. Faulty throttle sensor
Noise is emitted in 0
4
range.
73 37,60,61
11. Faulty 1st hold switch
Engine stalls while shifting to any
23, 76 77
range.
Parts inside oil pan:
Engine stalls in P range and driving 42
12. Faulty N-D accumulator
in N range.
13.
Faulty 2A accumulator
14. Faulty 4A accumulator
Shock is felt when shifting from N 70,12,23,3 15. Faulty 3R accumulator
to 0 range.
16. Faulty ATF temperature sensor
17. Clogged strainer
Lengthy time lag when shifting
23,32a
41
18. Faulty duty solenoid A
from N to 0 range.
19. Faulty duty solenoid B
Shock is felt when shifting from N 23, 14, 70
20. Faulty shift solenoid 1
to R range.
21. Faulty shift solenoid 2
22. Faulty shift solenoid 3
Lengthy time lag when shifting from 23 49,51 23. Valve sticking
N to R range.
24. Faulty detent spring
25. Faulty manual plate
Car does not move in any range 72,17,23 64,65,56,57,
25a. Faulty strainer seal
though engine revs up.
33, 34, 35, 36,
60,40
Parts inside extension case:
Engine stalls in all ranges. 62 26. Faulty transfer clutch
27. Transfer valve sticking
Car does not move in R range
23 49,51
28. Transfer pilot valve sticking
though engine revs up.
29. Faulty transfer pipe
Engine stalls in R range. 42,48
30. Faulty duty solenoid C
31. Noisy duty solenoid C
Car does not move in 0 or 3 range 53,54 32a. Faulty forward clutch rei ief ball
though engine revs up. 32b. Faulty overrunning clutch relief
ball
Car does not move in 0, 3 or 2 range
41,32a
though engine revs up.
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