Automatic Transmission And Differential - Subaru SVX 1992 Manual

AUTOMATIC TRANSMISSION AND DIFFERENTIAL
SUBARU
SVX
1992
Precaution for Supplemental Restraint System
"Airbag"
The Su pplemental Restraint System "Airbag"
helps to reduce the risk or severity of injury to the
driver in a frontal collision .
The Supplemental Restraint System consists of
an airbag module (located in the center of the
steering wheel), sensors, a control unit, warning
light, wiring harness and spiral cable.
Information necessary to service the safety is
included
in the "5-5. SUPPLEMENTAL RE-
STRAINT SYSTEM" of this Service Manual .
WARNING :
" To avoid rendering the Airbag system inoper-
ative, which could lead to personal injury or
death in the event of a severe frontal collision,
all maintenance must be performed by an
authorized SVX dealer .
" Improper maintenance, including incorrect re-
moval and installation of the Airbag system,
can lead to personal injury caused by uninten-
tional activation of the Airbag system .
All Airbag system electrical wiring harnesses
and connectors are covered with yellow outer
insulation . Do not use electrical test equipment
on any circuit related to the Supplemental
Restraint System "Airbag".
T+~+~
3-2
Page
M MECHANISM AND FUNCTION . . ... . . . . . ... .. . . . .. . . . . . . . ... .. . . ... . . 2
1 . General .. . . . . . ... . . . . .. . . . . . . . . . . . . . . . .. . . . . ... . . . . . . .. .. . . . .. . . . . . . . ... .. . . ... . . 2
2 . Torque Converter .. . . . . .. . . . . . . .. . . . . ... . . . . . . .. .. . . . .. . . . . . . . ... .. . . ... . . 4
3 . Lock-up Control System . . .. . . . . ... . . . . . . .. .. . . . .. . . . . . . . ... .. . . ... . . 5
4 . Oil Pump . . . . .. . . . . . .. ... . . . . .. . . . . . . .. . . . . ... . . . . . . .. .. . . . .. . . . . . . . . .. .. . . ... . . 7
5 . Planetary Gear . . .. . .. . . . . .. . . . . . . .. . . . . ... . . . . . . .. .. . . . .. . . . . . . . . .. .. . . ... . . 9
6. Reverse Clutch .. . . . . . . .. . . . . . . . . . . . . . . . . . . . .. .... . . . . .. . . . . . .. ... . . . . ... . 10
7. High Clutch . . . . .. .. . . . . . . .. . . . . . .. . . . . . . . . . . . . .. .... . . . . .. . . . . . .. .. . . ... ... . 11
8. Band Brake .. . . . .. .. . . . . . . .. . . . . . .. . . . . . . . . . . . . .. .... . . . . .. . . . . . . . .. . . ... ... . 12
9 . One-way Clutch . . . . . . . .. . . . . . .. . . . . . . . . . . . . .. .... . . . . .. . . . . . .. .. .. . . . ... . 13
10. Low £r Reverse Brake . . .. . . . . . . . .. . . . .. .... . . . . .. . . . . . .. .... . . . ... . 14
11 . Forward Clutch & Overrunning Clutch . . . . .. .... . . . ... .
15
12 . Input Shaft . . . .. .. . . . . . . .. . . . . . .. . . . . . . . .. . . . .. . ... . . . . .. . . . . . .. .... . . . ... . 16
13 . Reduction Gear . . . . . .. . . . . . .. . . . . . . . . . . . . .. . ... . . . . .. . . . . . .. .... . . . ... . 16
14. Final Reduction Gears . .. . . . . . . . . . . . . .. .... . . . . .. . . . . . .. .... .. . ... . 17
15. Range Select Mechanism . . . . . . . . . .. .... . . . . .. . . . . . .. .... .. . ... . 19
16. Parking Mechanism . . . . . .. . . . . . . . . . . . . .. .... . . . . .. . . . . . .. .... . . . ... . 20
17 . AWD Transfer System .. . . . . . . . . . . . . .. . ... . . . . .. . . . . . .. .... . . . ... . 21
18 . Hydraulic Control Valve . . . . . . . . . . . . .. .... . . . . .. . . . . . .. .... . . . ... . 24
19 . Gearshifting Mechanism .. . . . . . . . . . .. . ... . . . . ... . . . . .. . ... . . . ... . 30
20 . Power Train . .. ... . . . . . .. . . . . . .. . . . . . . . ... . . . . . ... . . . . ... . . . . . . . ... . . . .... 37
21 . Electronic-Hydraulic Control System .. . . . . . . . ... . . . .... 71
22 . Transmission Control Unit (TCU) .. .. . . . .. . . . . . . . ... . . . . ... 77
23 . Self-diagnosis System .. . .. . . . . ... . . . . . ... .. . . . .. . . . . . . . ... .. . . ... 90
24 . Fail-safe Function . . . . .. . . . . . . .. . . . . ... . . . . . . .. .. . . . .. . . . . . . . ... . . . . ... 91
S SPECIFICATIONS AND SERVICE DATA . . . . ... . . . . . ...... . . ... 92
C COMPONENT PARTS . . . ... . . . . . ... . . . .... . . . . . . .... . . . ... . . . . . . ..... . . ... 99
W SERVICE PROCEDURE ... . . . . . ... . . . . . .... . . . . .... . . . ..... . . . . . .... . . ... 109
1 . Precaution . . .. . . . . . . ... . . . . .. .. . . . . ... . . . . . .. . . . . . .. .... . . . . .. . . . . . . . . . . . ... 109
2. On-Car Service . . . ... . . . . .... . . . . . .. . . . . ... . . . . . .. .... . . . . .. . . . . . .. .. . . . . . 110
3 . Performance Test . . . . . . ... . . . . . .. . . . . ... . .. . . . . . ... . . . . .. . . . . . .. .. . . . . . 119
4. Overall Transmission ... . . . . . ... . . . ...... . . . . .... . . . ... . . . . . .... . . . . . 124
5. Reduction Drive Gear Assembly . . . . . . ... . . . . .. . . . . . . . . . . . . . . 150
6. Control Valve Body . . .... . . . . . ... . . . ...... . . . . .... . . . ... . . . . . . . .. . . . . . 151
7. Oil Pump Assembly . .... . . . . . ... . . . ...... . . . . .... . . . ... . . . . . . . .. . . . . . 153
8. Drive Pinion Shaft . . . . . . ... . . . . . .. . . . . ... ... . . . . . ... . . . . .. . . . . . . . . . . . . . . 156
9. Reverse Clutch . . . .... . . . . ... . . . . . .. . . . . ... ... . . . . . ... . . . . .. . . . . . . . . . . . . . . 158
10 . High Clutch . . . . . . .. .... . . .... . . . . . ... . . . .. .... . . . . .... . . . .. ... . . . . . .. . . . . . 159
11 . Forward Clutch Drum . . . . . ... . . . . . .... . . . . ..... . . .. ... . . . . . .... . . . 160
12 . One-way Clutch Outer Race . . . .... . . . . ..... . . . . ... . . . . . .... . . . 163
13 . Servo Piston . . . . . . .... . . .... . . . . . . . ... . . . .... .. . . . . ... . . . . ... . . . . . .... . . . 164
14. Differential Case Assembly . . . . . .... . . . . . .. . . . . . .. . . . . . . . ... . . . 165
15 . Transfer Clutch . . .... . . ...... . . . . . ... . . . ...... . . . . ... . . . . .... . . . . .... . . . 167
16 . Transfer Valve Body ..... . . . . . ... . . . ...... . . . . ... . . . . .... . . . . .... . . . 169
T TROUBLESHOOTING . . ... . . . . . .... . . . . ... . . . . ..... . . . .... .. . 171
1 . Supplemental Restraint System "Airbag" ... . . . .... .. . 171
2 . Precaution . . . . ... . . . . . ...... . . .... . . . . . .... . . . . .... . . . . .... . . . .. ... . . . ...... . 171
3 . Troubleshooting Chart for Self-diagnosis
System . . . ...... . . . ... . . . . . .... . . ..... . . . . . . .. . . . . .... .. . . . ... . . . . . ... .. . . . .... . 171
4. Transmission Control Unit (TCU) I/O Signal . . . . .. .. . 176
5 . Troubleshooting Chart with Trouble Code .. . . . ...... . 178
6 . Troubleshooting Chart with Select Monitor . . . .... .. . 202
7 . General Troubleshooting Table . .... . . . . ... . . . . ..... . . . ..... . . 217