2001 TOYOTA SEQUOIA Service Repair Manual

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TOYOTA SEQUOIA 2001 Service Repair Manual DIDIQ±01
± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±535
729 Author: Date:
2005 SEQUOIA (RM1146U)
ROAD TEST
1. PROBLEM SYMPTOM CONFIRMATION
Based on the result of the customer problem analysis, try

DIDIQ±01
± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±535
729 Author: Date:
2005 SEQUOIA (RM1146U)
ROAD TEST
1. PROBLEM SYMPTOM CONFIRMATION
Based on the result of the customer problem analysis, try to reproduce the symptoms. If the problem is that
the transaxle does not shift up, shift down, or the shift point is too high or too low, conduct the following road
test referring to the automatic shift schedule and simulate the problem symptoms.
2. ROAD TEST
NOTICE:
Perform the test at the normal operating ATF (Automatic Transmission Fluid) temperature: 50 to 80°C
(122 to 176°F).
(a) D position test:
Shift into the D position and fully depress the accelerator pedal and check the following points. Check
up±shift operation.
(1) Check up±shift operation.
Check that 1 " 2, 2 " 3, 3 " 4 and 4 " 5th up±shifts take place, and that the shift points conform
to the automatic shift schedule (See page SS±24).
HINT:
5th Gear Up±shift Prohibition Control
Engine coolant temperature is 55 °C (131 °F) or less and vehicle speed is at 51 km/h (32 mph) or less.
4th Gear Up±shift Prohibition Control
Engine coolant temperature is 40 °C (104 °F) or less and vehicle speed is at 45 km/h (28 mph) or less.
5th Gear Lock±up Prohibition Control
Brake pedal is depressed.
Accelerator pedal is released.
Engine coolant temperature is 60 °C (140 °F) or less.
(2) Check for shift shock and slip.
Check for shock and slip at the 1 " 2, 2 " 3, 3 " 4 and 4 " 5th up±shifts.
(3) Check for abnormal noise and vibration.
Check for abnormal noise and vibration when up±shifting from 1 " 2, 2 " 3, 3 " 4 and 4 " 5
while driving with the shift lever in the D position, and check while driving in the lock±up condition.
HINT:
The check for the cause of abnormal noise and vibration must be done thoroughly as it could also be due
to loss of balance in the differential, torque converter clutch, etc.
(4) Check kick±down operation.
Check vehicle speeds when the 2nd to 1st, 3rd to 2nd, 4th to 3rd, and 5th to 4th kick±downs take
place while driving with the shift lever in the D position. Confirm that each speed is within the
applicable vehicle speed range indicated in the automatic shift schedule (See page SS±24).
(5) Check abnormal shock and slip at kick±down.
(6) Check the lock±up mechanism.
Drive in the D position (5th gear), at a steady speed (lock±up ON).
Lightly depress the accelerator pedal and check that the engine speed does not change
abruptly.
HINT:
If there is a big jump in engine speed, there is no lock±up.

Page 738 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual DI±536
± DIAGNOSTICSAUTOMATIC TRANSMISSION
730 Author: Date:
2005 SEQUOIA (RM1146U)
(b) 4 (O/D OFF) position test:
Shift into the 4 (O/D OFF) position and fully depress the accelerator pedal and

DI±536
± DIAGNOSTICSAUTOMATIC TRANSMISSION
730 Author: Date:
2005 SEQUOIA (RM1146U)
(b) 4 (O/D OFF) position test:
Shift into the 4 (O/D OFF) position and fully depress the accelerator pedal and check the following
points.
(1) Check up±shift operation.
Check that the 1 " 2, 2 " 3 and 3 " 4 up±shifts take place and that the shift point conforms
to the automatic shift schedule (See page SS±24).
HINT:
There is no 5th up±shift in the 4 position.
4th Gear Lock±up Prohibition Control
Brake pedal is depressed.
Accelerator pedal is released.
Engine coolant temperature is 60 °C (140 °F) or less.
(2) Check engine braking.
While driving in the 4 position and 4th gear, release the accelerator pedal and check the engine
braking effect.
(3) Check for abnormal noises during acceleration and deceleration, and for shock at up±shift and
down±shift.
(4) Check the lock±up mechanism.
Drive in 4 position 4th gear, at a steady speed (lock±up ON).
Lightly depress the accelerator pedal and check that the engine speed does not change
abruptly.
HINT:
If there is a big jump in engine speed, there is no lock±up.
(c) 3 position test:
Shift into the 3 position and fully depress the accelerator pedal and check the following points.
(1) Check up±shift operation.
Check that the 1 " 2 and 2 " 3 up±shifts takes place and that the shift point conforms to the
automatic shift schedule (See page SS±24).
HINT:
There is no 4th up±shift and lock±up in the 3 position.
When the 2nd start switch is ON, there is no 1 "2 up±shift and 2 "1 down±shift.
(2) Check engine braking.
While running in the 3 position and 3rd gear, release the accelerator pedal and check the engine
braking effect.
(3) Check for abnormal noises during acceleration and deceleration, and for shock at up±shift and
down±shift.
(d) 2 position test:
Shift into the 2 position and fully depress the accelerator pedal and check the following points.
(1) Check up±shift operation.
Check that the 1 " 2 up±shift takes place and that the shift point conforms to the automatic shift
schedule (See page SS±24).
HINT:
There is no 3rd up±shift and lock±up in the 2 position.
When the 2nd start switch is ON, there is no 1 "2 up±shift and 2 "1 down±shift.

Page 739 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual ± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±537
731 Author: Date:
2005 SEQUOIA (RM1146U)
(2) Check engine braking.
While running in the 2 position and 2nd gear, release the accelerator pedal and chec

Page 740 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual DIDIR±01
DI±538
± DIAGNOSTICSAUTOMATIC TRANSMISSION
732 Author: Date:
2005 SEQUOIA (RM1146U)
MECHANICAL SYSTEM TESTS
1. PERFORM MECHANICAL SYSTEM TESTS
(a) Measure the stall speed.
The object o

Page 741 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual ± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±539
733 Author: Date:
2005 SEQUOIA (RM1146U)
(b) Measure the time lag.
When the shift lever is shifted while the engine is idling, there will be a certain

Page 742 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual DIDIS±01
D14143
SST
SST
DI±540
± DIAGNOSTICSAUTOMATIC TRANSMISSION
734 Author: Date:
2005 SEQUOIA (RM1146U)
HYDRAULIC TEST
1. PERFORM HYDRAULIC TEST
Measure the line pressure.
NOTICE:
Perform

Page 743 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual ± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±541
735 Author: Date:
2005 SEQUOIA (RM1146U)
Specified line pressure:
ConditionD position kPa (kgf / cm2, psi)R position kPa (kgf / cm2,

Page 744 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual DIDIT±01
D11984
DI±542
± DIAGNOSTICSAUTOMATIC TRANSMISSION
736 Author: Date:
2005 SEQUOIA (RM1146U)
MANUAL SHIFTING TEST
1. MANUAL SHIFTING TEST
HINT:
With this test, it can be determined whet

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