AT-210
TROUBLE DIAGNOSIS FOR SYMPTOMS
6. DETECT MALFUNCTIONING ITEM
1. Remove control valve assembly. Refer to AT- 2 2 5 , "
Control Valve Assembly and Accumulators" .
2. Check the following items:
–Shift valve A
–Overrun clutch solenoid valve
3. Disassemble A/T. Refer to AT- 2 5 5 , "
Disassembly" .
4. Check the following items:
–Overrun clutch assembly. Refer to AT- 3 0 7 , "Forward and Overrun Clutches" .
–Low & reverse brake assembly. Refer to AT- 3 1 5 , "Low & Reverse Brake" .
OK or NG
OK >> GO TO 7.
NG >> Repair or replace damaged parts.
7. SYMPTOM CHECK
Check again. Refer to AT- 5 2 , "
Cruise Test — Part 3" .
OK or NG
OK >>INSPECTION END
NG >> GO TO 8.
8. CHECK TCM
1. Check TCM input/output signals. Refer to AT- 6 4 , "
TCM Terminals and Reference Value" .
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
OK or NG
OK >> INSPECTION END
NG >> Repair or replace damaged parts.
TCM Self-diagnosis Does Not ActivateBCS0014V
SYMPTOM:
A/T CHECK indicator lamp does not come on in TCM self-diagnostic procedure even if the lamp circuit
is good.
DESCRIPTION
PNP switch
PNP switch includes a transmission range switch. The transmission range switch detects the selector
lever position and sends a signal to the TCM.
3rd position switch
3rd position switch detects the 3rd position and sends a signal via CAN communication to the TCM.
Closed throttle position signal and wide-open throttle position signal.
ECM judges throttle opening based on a signal from accelerator pedal position (APP) sensor, and sends
the signal via CAN communication to TCM.
Stop lamp switch
Stop lamp switch detects the switch position (ON or OFF) and sends a signal via CAN communication to
the TCM.
DIAGNOSTIC PROCEDURE
NOTE:
The diagnostic procedure includes inspection for the park/neutral position (PNP) stitch, 3rd position switch,
stop lamp switch, closed throttle position signal and wide open throttle position signal circuit. Refer to AT- 1 6 1 ,
"PNP, 3RD POSITION SWITCH AND CLOSED THROTTLE, WIDE OPEN THROTTLE POSITION SIGNAL"
and AT- 1 6 7 , "BRAKE SIGNAL CIRCUIT" .
SHIFT CONTROL SYSTEM
AT-215
D
E
F
G
H
I
J
K
L
MA
B
AT
Adjustment of A/T PositionBCS0014X
Move selector lever from “P” position to “1” position. You should be
able to feel the detents in each position. If the detents cannot be felt
or if the pointer indicating the position is improperly aligned, the con-
trol cable needs adjustment.
1. Place selector lever in “P” position.
2. Loosen control cable lock nut and place manual shaft in “P”
position.
CAUTION:
Turn wheels more than 1/4 rotations and apply the park
lock.
3. After pushing the control cable with the specified force, move
your hands off the control cable.
4. Connect control cable on manual shaft.
CAUTION:
No application of a force to the manual lever.
5. Tighten control cable lock nut.
6. Move selector lever from “P” to “1” position again. Make sure that selector lever moves smoothly.
7. Apply grease to contacting areas of selector lever and control cable. Install any part removed.
Checking of A/T PositionBCS0014Y
1. Place selector lever in “P” position, and turn ignition switch ON. (Do not start engine.)
2. Make sure selector lever can be shifted to other than “P” position when brake pedal is depressed. Also
make sure selector lever can be shifted from “P” position only when brake pedal is depressed.
3. Move selector lever and check for excessive effort, sticking, noise or rattle.
4. Confirm selector lever stops at each position with the feel of engagement when it is moved through all the
positions. Check whether or not the actual position selector lever is in matches the position shown by the
shift position indicator and transaxle body.
5. The method of operating selector lever to individual positions
correctly should be as shown in the figure.
6. Confirm back-up lamps illuminate only when lever is placed in
“R” position. Confirm back-up lamps do not illuminate when
selector lever is in “P” or “N” position with selector lever pushed
against “R” position.
7. Confirm engine can only be started with selector lever in “P” and
“N” positions.
8. Make sure transaxle is locked completely in “P” position.Specified force: 9.8 N (1.0 kg, 2.2 lb)
SCIA3157E
SCIA5728E
AT-216
A/T SHIFT LOCK SYSTEM
A/T SHIFT LOCK SYSTEMPFP:34950
DescriptionBCS0014Z
The electrical key interlock mechanism also operates as a shift lock:
With the ignition switch turned to ON, selector lever cannot be shifted from “P” to any other position unless
brake pedal is depressed.
With the key removed, selector lever cannot be shifted from “P” to any other position.
The key cannot be removed unless selector lever is placed in “P”.
The shift lock and key interlock mechanisms are controlled by the ON-OFF operation of the shift lock sole-
noid and by the operation of the rotator and slider located inside key cylinder, respectively.
Shift Lock System Electrical Parts LocationBCS00150
NOTE:
This emergency lever insures that when battery is off ignition key cannot be removed.Inthe situation like this,
by operating this lever, ignition key can be removed.
SCIA5729E
A/T SHIFT LOCK SYSTEM
AT-221
D
E
F
G
H
I
J
K
L
MA
B
AT
Shift Lock Control Unit Reference ValuesBCS00152
SHIFT LOCK HARNESS CONNECTOR TERMINALS LAYOUT
SHIFT LOCK CONTROL UNIT INSPECTION TABLE
Data are reference values.
NOTE:
Make sure that the pointer swings only momentarily because the output time is so short. If the inspection is done with an oscilloscope, it
should be observed that the power source voltage lasts for 3.5 to 10 ms.
SCIA2004E
Terminal Wire color Item Condition Judgement standard
1 Y/R Power source Always Battery voltage
2LDetention switch (for
key)When selector lever is not in “P” position with
key inserted.Battery voltage
When selector lever is in “P” position with key
inserted.Approx. 0 V
3RDetention switch (for
shift)When selector lever is not “P” position. Battery voltage
When selector lever is “P” position. Approx. 0 V
4 R/G Stop lamp switchWhen brake pedal is depressed Battery voltage
When brake pedal is released Approx. 0 V
5V/WVehicle speed signal
(8pulse signal)Speed meter is operatedRefer to DI-12, "
Terminals and Ref-
erence Value for Combination
Meter" .
6 G Ignition switch signalIgnition switch: OFF Approx. 0 V
Ignition switch: ON Battery voltage
7 R/W Shift lock solenoid
When selector lever is in “P” position, brake
pedal is depressed, and ignition switch is ON.
When selector lever is not in “P” position,
ignition switch is ON, and vehicle speed is
10km/h or less.
For 3minutes after selector lever is not in “P”
position, vehicle speed is 10 km/h or less,
and ignition switch is ON → OFF.Approx. 0 V
Except the above Battery voltage
8 B Ground Always Approx. 0 V
9 G/B Key lock solenoidWhen selector lever is not “P” position.Battery voltage for approx. 0.1 sec.
(Note)
When selector lever is “P” position. Approx. 0 V
10 G/WKey unlock solenoidWhen selector lever is “P” position with ignition
switch is OFF.Battery voltage for approx. 0.1 sec.
(Note)
When selector lever is not “P” position with igni-
tion switch is OFF.Approx. 0 V
AT-224
A/T SHIFT LOCK SYSTEM
IGNITION KNOB SWITCH (WITH INTELLIGENT KEY)
Check continuity between terminals of ignition knob switch, key
switch and key lock solenoid harness connector.
STOP LAMP SWITCH
Check continuity between terminals of stop lamp switch connector.
Check stop lamp switch after adjusting brake pedal. Refer to BR-6,
"Inspection and Adjustment" .
Condition Connector Terminal Continuity
Pushed
M20 2 - 7Ye s
Released No
SCIA7773E
Condition Connector Terminal Continuity
When brake pedal is depressed
E210 3 - 4Ye s
When brake pedal is released No
SCIA2126E
OVERHAUL
AT-249
D
E
F
G
H
I
J
K
L
MA
B
AT
10. D-ring 11. Reverse clutch drum 12. Thrust washer
13. Reverse clutch assembly 14. Drive plate 15. Needle bearing
16. Bearing race 17. Front sun gear 18. Needle bearing
19. High clutch hub 20. Needle bearing 21. Snap ring
22. Retaining plate 23. Driven plate 24. Snap ring
25. Spring retainer assembly 26. D-ring 27. D-ring
28. High clutch piston 29. Input shaft assembly (high clutch
drum)30. Seal ring
31. Needle bearing 32. Bearing race 33. High clutch assembly
34. Drive plate 35. Needle bearing 36. Overrun clutch hub
37. Thrust washer 38. Bearing race 39. Forward one-way clutch
40. Bearing race 41. Forward clutch hub 42. Thrust washer
43. Rear internal gear 44. Needle bearing 45. Rear planetary carrier
46. Rear sun gear 47. Front planetary carrier 48. Spring retainer
49. D-ring 50. D-ring 51. Low & reverse brake piston
52. Retainer 53. Snap ring 54. Low one-way clutch
55. Snap ring 56. Needle bearing 57. Needle bearing
58. Forward clutch drum 59. Forward clutch piston 60. Seal lip
61. D-ring 62. Spring retainer assembly 63. Snap ring
64. Dish plate 65. Driven plate 66. Retaining plate
67. Snap ring 68. Dish plate 69. Retaining plate
70. Driven plate 71. Retaining plate 72. Retaining plate
73. Snap ring 74. Forward clutch assembly and over-
run clutch assembly75. Drive plate
76. Drive plate 77. Overrun clutch piston 78. D-ring
79. Seal lip 80. Retaining plate 81. Driven plate
82. Low & reverse brake assembly 83. Snap ring 84. Retaining plate
85. Dish plate 86. Drive plate
Refer to GI section to make sure icons (symbol marks) in the figure. Refer to GI-10, "
Components" .
OVERHAUL
AT-251
D
E
F
G
H
I
J
K
L
MA
B
AT
10. O-ring 11. Turbine revolution sensor (power
train revolution sensor)12. Bracket
13. Anchor end pin 14. Lock nut 15. Transaxle case
16. Brake band 17. Bearing retainer 18. Seal ring
19. Radial needle bearing 20. Snap ring 21. Reduction pinion gear
22. Reduction pinion gear bearing inner
race23. Reduction pinion gear bearing outer
race24. Strut
25. O-ring 26. O-ring 27. Servo release accumulator piston
28. O-ring 29. Return spring 30. Control valve assembly
31. Oil pan gasket 32. Drain plug gasket 33. Drain plug
34. Magnet 35. Oil pan 36. Oil pan fitting bolt
37. Low & reverse brake tube 38. Oil sleeve 39. O-ring
40. Snap ring 41. O-ring 42. N-D accumulator piston
43. Return spring 44. Lip seal 45. Parking rod
46. Retaining pin 47. Manual shaft oil seal 48. Detent spring
49. Manual shaft 50. Retaining pin 51. Manual plate
52. Parking rod plate 53. O/D servo piston 54. O/D servo piston retainer
55. O/D servo piston retainer fitting bolt 56. O-ring 57. D-ring
58. Servo piston retainer 59. O-ring 60. E-ring
61. Spring retainer 62. O/D servo return spring 63. D-ring
64. Band servo piston 65. Band servo thrust washer 66. Band servo piston stem
67. 2nd servo return spring 68. Parking pawl 69. Parking shaft
70. Return spring 71. Paring pawl spacer 72. PNP switch
73. Idler gear bearing 74. Idler gear 75. Idler gear lock nut
76. Reduction pinion gear adjusting
shim77. Output shaft adjusting shim 78. Side cover
Refer to GI section to make sure icons (symbol marks) in the figure. Refer to GI-10, "
Components" .
However, refer to the following symbol for others.
: Apply locking sealant (Loctite #518).
DISASSEMBLY
AT-259
D
E
F
G
H
I
J
K
L
MA
B
AT
Check each return spring, and replace if damaged, deformed or
worn. Refer to AT- 3 6 5 , "
Accumulator" for free length (L1 ) and
length (L
2 ).
(1): Return spring (Servo release accumulator)
(2): Return spring (N-D accumulator)
CAUTION:
Do not remove spring retainer (3).
23. Remove lip seals from oil groove for band servo.
24. Remove low & reverse brake tube and oil sleeve.
25. Remove converter housing according to the following proce-
dures.
a. Remove converter housing mounting bolts.
b. Remove converter housing by tapping it lightly.
SCIA6955E
SCIA4867E
SCIA4868E
SAT008F