Subaru XT 1988 Service Manual page 674

AUTOMATIC TRANSMISSION AND DIFFERENTIAL
3-2
Reference No.
Symptom Probable cause
On-car check Unit check
Engine stalls in D, 3 or 2 range. 52
Parts inside differential case:
Car does not move in D, 3 or 2 range 23,3 54
though engine revs up.
33. Drive pinion broken
34. Crown gear broken
Poor acceleration: 35. Axle shaft broken
•
High stall rpm 72,23 41,51 36. Differential gear broken
•
Low stall rpm
76,66,40 37. Poor/improper contact of final
• Proper stall rpm (Poor accelera-
3,23 46,48 gear
tion in D, 3 or 2 range)
38. Faulty seal pipe
• Proper stall rpm (Poor accelera-
23 46,48,44 39. Faulty speedometer gear
tion in R range)
Parts inside transmission:
No shifts:
•
1-+2
3,23 47 40. Oil pump seized or broken or
•
2-+3
3,23 45 foreign matter in pump
•
3-+4
3,23,16 47 41. Forward clutch slippage
•
K/D
3,10 42. Forward clutch seized
43. Overrunning clutch slippage
No engine braking in:
44. Overrunning clutch seized
•
3 range only
3,23,10
45. High clutch slippage
•
3, 2 or 1 range 32b
43
46. High clutch seized
•
1 range only 3,23
49
47. Band & servo slippage
Erroneous shift points 3,23,10 47
48. Band seized
49.
Low & reverse brake slipping
No lock-up operation 3,23,16,10 68 50. Low
&
reverse brake seized
51. Reverse clutch slippage
No power mode in D range
3, 10
52. Reverse clutch seized
Power mode not released in D range
3,10
53. Faulty O.w.C. (1-2)
54. Faulty O.w.C. (3-4)
Parking brake failure:
55. Faulty double oil seal
•
No braking
6, 7 62 56. I nput shaft broken
•
Dragging or failure to release
6, 7 62
57. Reduction drive shaft broken
58. Planetary gear broken
Unusual select force:
59. Reduction gear broken
•
Considerable effort required
7,24,25
60. Poor/improper contact of
•
No or light effort required
24,25
planetary gear
Fluid overflow
61.
Poor/improper contact of
•
ATF 74
reduction gear
•
Differential oil 75
62. Faulty parking brake mechanism
Unusual changes in differential oil
38,55
level
Odor from oil supply pipe 70 41,43,45,47
49,51
147