2001 TOYOTA SEQUOIA Service Repair Manual

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Page 753 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual DIDIW±01
± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±551
745 Author: Date:
2005 SEQUOIA (RM1146U)
MONITOR DRIVE PATTERN
1. MONITOR DRIVE PATTERN FOR ECT TEST
(a) Perform this drive pattern as one me

Page 754 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual D14144
Warmed up
sufficiently
Approx.100 km/h
(62 mph)
Vehicle Speed
Approx. 80 km/h
(50 mph)
0
Normal acceleration
through all the gears from 1st to 5th
Lock±up ON
Vehicle Speed
Stop
(Idling)
Mai

Page 755 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual DIDIX±01
± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±553
747 Author: Date:
2005 SEQUOIA (RM1146U)
PROBLEM SYMPTOMS TABLE
HINT:
If a normal code is displayed during the diagnostic trouble code check

DIDIX±01
± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±553
747 Author: Date:
2005 SEQUOIA (RM1146U)
PROBLEM SYMPTOMS TABLE
HINT:
If a normal code is displayed during the diagnostic trouble code check although the trouble still occurs, check
the electrical circuits for each symptom in the order given in the charts on the following pages and proceed
to the page given for troubleshooting.
The Matrix Chart is divided into 3 chapters.
1. Chapter 1: Electronic Circuit Matrix Chart
Refer to the table below when the trouble cause is considered to be electrical.
If the instruction ºProceed to next circuit inspection shown on matrix chartº is given in the flow chart
of each circuit, proceed to the circuit with the next highest number in the table to continue the check.
If the trouble still occurs even though there are no abnormalities in any of the other circuits, check and
replace the ECM.
HINT:
*1: When the circuit on which mark *1 is attached is defective, DTC could be output (see page DI±573).
SymptomSuspect AreaSee page
No up±shift
(A particular gear, from 1st to 4th gear, is not up±shifted)1. Shift solenoid valve (S1) circuit *1
2. Shift solenoid valve (S2) circuit *1
3. ECM
DI±641
DI±646
IN±35
No up±shift (4th " 5th)
1. O/D main switch circuit
2. Engine coolant temp. sensor circuit *1
3. Speed sensor NT circuit *1
4. Shift solenoid valve (SL1) circuit *1
5. Shift solenoid valve (SL2) circuit *1
6. Shift solenoid valve (SR) circuit *1
7. ECM
DI±688
DI±58
DI±591
DI±603
DI±631
DI±651
IN±35
No up±shift (3rd " 4th)
1. Engine coolant temp. sensor circuit *1
2. Shift solenoid valve (S2) circuit *1
3. ECM
DI±58
DI±646
IN±35
No up±shift (1st " 2nd)
1. Shift position L switch circuit
2. Shift solenoid valve (S2) circuit *1
3. ECM
DI±691
DI±646
IN±35
No down±shift (5th " 4th)
1. O/D main switch circuit
2. Shift solenoid valve (SL1) circuit *1
3. Shift solenoid valve (SL2) circuit *1
4. Shift solenoid valve (SR) circuit *1
5. ECM
DI±688
DI±603
DI±631
DI±651
IN±35
No down±shift (2nd " 1st)
1. Shift position L switch circuit
2. Shift solenoid valve (S2) circuit *1
3. ECM
DI±691
DI±646
IN±35
No down±shift
(A particular gear, from 1st to 4th gear, is not down±shifted)1. Shift solenoid valve (S1) circuit *1
2. Shift solenoid valve (S2) circuit *1
3. ECM
DI±641
DI±646
IN±35
No lock±up
1. ATF temperature sensor circuit *1
2. Stop light switch circuit *1
3. Speed sensor NT circuit *1
4. Shift solenoid valve (SLU) circuit *1
5. Engine coolant temp. sensor circuit *1
6. ECM
DI±582
DI±600
DI±591
DI±680
DI±58
IN±35
No lock±up off4. Shift solenoid valve (SLU) circuit *1
6. ECM
DI±680
IN±35

Page 756 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual DI±554
± DIAGNOSTICSAUTOMATIC TRANSMISSION
748 Author: Date:
2005 SEQUOIA (RM1146U) Shift point too high or too low
1. Shift solenoid valve (SLT) circuit *1
2. Speed sensor NT circuit *1
3. Spee

DI±554
± DIAGNOSTICSAUTOMATIC TRANSMISSION
748 Author: Date:
2005 SEQUOIA (RM1146U) Shift point too high or too low
1. Shift solenoid valve (SLT) circuit *1
2. Speed sensor NT circuit *1
3. Speed sensor SP2 circuit *1
4. Throttle position sensor circuit *1
5. ATF temperature sensor circuit *1
6. ECM
DI±662
DI±591
DI±596
DI±58
DI±582
IN±35
Up±shift to 5th from 4th while shift lever is in 4 position1. O/D main switch circuit
2. ECMDI±688
IN±35
Up±shift to 5th from 4th while engine is cold1. Engine coolant temp. sensor circuit *1
2. ECM
DI±58
IN±35
Up±shift to 4th from 3rd while shift lever is in 3 position1. Park/neutral position switch circuit *1
2. ECM
DI±576
IN±35
Up±shift to 3rd from 2nd while shift lever is in 2 position1. Park/neutral position switch circuit *1
2. ECM
DI±576
IN±35
Up±shift to 2nd from 1st while shift lever is in L position1. Shift position L switch circuit
2. ECMDI±691
IN±35
Harsh engagement (N " D)
1. Speed sensor NT circuit *1
2. Shift solenoid valve (SL1) circuit *1
3. Shift solenoid valve (SLT) circuit *1
4. ECM
DI±591
DI±603
DI±662
IN±35
Harsh engagement (Lock±up)
1. Speed sensor NT circuit *1
2. Speed sensor SP2 circuit *1
3. Shift solenoid valve (SLU) circuit *1
4. ECM
DI±591
DI±596
DI±680
IN±35
Harsh engagement (Any driving position)ECMIN±35
Poor acceleration
1. ATF temperature sensor No.2 circuit *1
2. Engine coolant temp. sensor circuit *1
3. Shift solenoid valve (SLT) circuit *1
4. ECM
DI±666
DI±58
DI±662
IN±35
No engine brakingECMIN±35
No kick±downECMIN±35
Engine stalls when starting off or stopping1. Shift solenoid valve (SLU) circuit *1
2. ECM
DI±680
IN±35
AT Oil Temp. warning light remains on1. ATF temperature sensor No.2 circuit*1DI±666
Lock±up at 3rd gear
1. AT F temperature sensor No.2 circuit 1
2. Engine coolant temp. sensor circuit *1DI±666
DI±58
Shift point too high
2. Engine coolant tem . sensor circuit
3. ECMDI 58
IN±35
Malfunction in shifting1. Park/neutral position switch circuit *1
2. ECM
DI±576
IN±35

Page 757 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual ± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±555
749 Author: Date:
2005 SEQUOIA (RM1146U)
Chapter 2: On±Vehicle Repair
(: A750E, A750F AUTOMATIC TRANSMISSION Repair Manual Pub. No. RM999U)
SymptomS

± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±555
749 Author: Date:
2005 SEQUOIA (RM1146U)
Chapter 2: On±Vehicle Repair
(: A750E, A750F AUTOMATIC TRANSMISSION Repair Manual Pub. No. RM999U)
SymptomSuspect AreaSee page
Vehicle does not move with shift lever in any forward position and
reverse position
1. Transmission control cable
2. Manual valve
3. Parking lock pawl
4. Off±vehicle repair matrix chartDI±524

±
Vehicle does not move with shift lever in R position1. Valve body assy
2. Off±vehicle repair matrix chartAT±10
±
No up±shift (1st " 2nd)1. Valve body assy
2. Off±vehicle repair matrix chartAT±10
±
No up±shift (2nd " 3rd)1. Valve body assy
2. Off±vehicle repair matrix chartAT±10
±
No up±shift (3rd " 4th)1. Valve body assy
2. Off±vehicle repair matrix chartAT±10
±
No up±shift (4th " 5th)1. Valve body assy
2. Off±vehicle repair matrix chartAT±10
±
No down±shift (5th " 4th)1. Valve body assy
2. Off±vehicle repair matrix chartAT±10
±
No down±shift (4th " 3rd)1. Valve body assy
2. Off±vehicle repair matrix chartAT±10
±
No down±shift (3rd " 2nd)1. Valve body assy
2. Off±vehicle repair matrix chartAT±10
±
No down±shift (2nd " 1st)1. Valve body assy
2. Off±vehicle repair matrix chartAT±10
±
No lock±up or No lock±up off
1. Shift solenoid valve (SLU)
2. Valve body assy
3. Off±vehicle repair matrix chartDI±672
AT±10
±
Harsh engagement (N " D)
1. Shift solenoid valve (SL1)
2. Valve body assy
3. C
1 accumulator
4. Off±vehicle repair matrix chart
DI±620
AT±10

±
Harsh engagement (Lock±up)
1. Shift solenoid valve (SLU)
2. Valve body assy
3. Off±vehicle repair matrix chartDI±672
AT±10
±
Harsh engagement (N " R)
1. Shift solenoid valve (SLT)
2. Shift solenoid valve (SLU)
3. Valve body assy
4. C
3 accumulator
5. Off±vehicle repair matrix chart
DI±656
DI±672
AT±10

±
Harsh engagement (1st "2nd " 3rd " 4th "5th)
1. Shift solenoid valve (SLT)
2. Shift solenoid valve (SL1)
3. Valve body assyDI±656
DI±620
AT±10
Harsh engagement (1st " 2nd)
1. Valve body assy
2. B
3 accumulator
3. Off±vehicle repair matrix chart
AT±10

±
Harsh engagement (2nd " 3rd)
1. Valve body assy
2. C
3 accumulator
3. Off±vehicle repair matrix chart
AT±10

±
Harsh engagement (3rd " 4th)
1. Valve body assy
2. C
2 accumulator
3. Off±vehicle repair matrix chart
AT±10

±

Page 758 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual DI±556
± DIAGNOSTICSAUTOMATIC TRANSMISSION
750 Author: Date:
2005 SEQUOIA (RM1146U) Harsh engagement (4th " 5th)
1. Shift solenoid valve (SL1)
2. Shift solenoid valve (SL2)
3. Valve body assy
4.

Page 759 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual ± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±557
751 Author: Date:
2005 SEQUOIA (RM1146U)
Chapter 3: Off±Vehicle Repair
(: A750E, A750F AUTOMATIC TRANSMISSION Repair Manual Pub. No. RM999U)
Symptom

± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±557
751 Author: Date:
2005 SEQUOIA (RM1146U)
Chapter 3: Off±Vehicle Repair
(: A750E, A750F AUTOMATIC TRANSMISSION Repair Manual Pub. No. RM999U)
SymptomSuspect AreaSee page
Vehicle does not move with shift lever in any forward position and
reverse position1. Rear planetary gear unit
2. Torque converter clutch
AT±30
Vehicle does not move with shift lever in R position
1. Brake No. 4 (B4)
2. Clutch No. 3 (C
3)
3. One±way clutch No.4 (F
1)

No up±shift (1st " 2nd)
1. Brake No. 3 (B3)
2. One±way clutch No.1 (F
1)
3. One±way clutch No. 2 (F
2)

No up±shift (2nd " 3rd)Clutch No. 3 (C3)
No up±shift (3rd " 4th)Clutch No. 2 (C2)
No up±shift (4th " 5th)1. Brake No. 1 (B1)
2. Clutch No. 1 (C
1)

No lock±up or No lock±up offTorque converter clutchAT±30
Harsh engagement (N " D)1. Clutch No. 1 (C1)
2. One±way clutch No.3 (F
3)

Harsh engagement (N " R)
1. Clutch No. 3 (C3)
2. Brake No. 4 (B
4)
3. One±way clutch No.1 (F
1)

Harsh engagement (1 " 2)
1. Brake No. 3 (B3)
2. One±way clutch No.1 (F
1)
3. One±way clutch No. 2 (F
2)

Harsh engagement (2 " 3)Clutch No. 3 (C3)
Harsh engagement (3 " 4)Clutch No. 2 (C2)
Harsh engagement (4 " 5th)1. Brake No. 1 (B1)
2. Clutch No. 1 (C
1)

Harsh engagement (Lock±up)Torque converter clutchAT±30
Slip or shudder (Forward and reverse: After warm±up)
1. One±way clutch No.1 (F1)
2. Clutch No. 3 (C
3)
3. Torque converter clutch clutch

Slip or shudder (Particular position: Just after engine starts)Torque converter clutchAT±30
Slip or shudder (R position)
1. Brake No. 4 (B4)
2. One±way clutch No.1 (F
1)
3. Clutch No. 3 (C
3)

Slip or shudder (1st)1. Clutch No. 1 (C1)
2. One±way clutch No.3 (F
3)

Slip or shudder (2nd)
1. Clutch No. 1 (C1)
2. Brake No. 3 (B
3)
3. One±way clutch No.1 (F
1)
4. One±way clutch No.2 (F
2)

Slip or shudder (3rd)
1. Clutch No. 1 (C1)
2. Clutch No. 3 (C
3)
3. One±way clutch No.1 (F
1)

Slip or shudder (4th)1. Clutch No. 1 (C1)
2. Clutch No. 2 (C
2)

Slip or shudder (5th)
1. Clutch No. 2 (C2)
2. Clutch No. 3 (C
3)
3. Brake No. 1 (B
1)

No engine braking (1st - 4th: D position)Clutch No. 1 (C1)

Page 760 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual DI±558
± DIAGNOSTICSAUTOMATIC TRANSMISSION
752 Author: Date:
2005 SEQUOIA (RM1146U) No engine braking (1st: L position)
Brake No. 4 (B4)
No engine braking (2nd: 2 position)Brake No. 2 (B2)
No

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