TOYOTA SEQUOIA 2001 Service Repair Manual

S2 SR OFF S1 SR OFF S1 S2 SR OFF
Gear Gear Gear
ºRº
ºDº
º3º
º2º
ºLº
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RRR R
1 st
1 st E/B
4 th
5 th3 rd
2 nd
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1 st
1 st 1 st 1 st 1 st
1 st 1 st 1 st 1 st2 nd
2 nd
2 nd 3 rd
3 rd
3 rd
3 rd 3 rd
3 rd
3 rd
3 rd
1 st E/B
1 st E/B
1 st E/B
1 st E/B
1 st E/B 1 st E/B 1 st E/B
1 st E/B
1 st E/B
1 st E/B 1 st E/B 1 st E/B1 st E/B 1 st E/B
1 st E/B
1 st E/B
1 st E/B
4 th
4 th
4 th
4 th
4 th 4 th
4 th
5 th 4 th4 th
4 th 4 th 4 th
4 th
4 th
3 rd E/B
3 rd E/B3 rd
1 st 1 st 1 st
1 st
1 st1 st
2nd1 st
2nd 2nd 1 st E/B2nd1 st 3 rd E/B
3 rd
3 rd 3 rd E/B
3 rd1 st
3 rd
3 rd E/B
3 rd
1 st
1 st
1 st
1 st
1 st
1 st 1 st
4 th
3 rd
3 rd E/B
3 rd
3 rd E/B
3 rd E/B
4 th
5 th
4 th
5 th
Fail 4 th
Fail 4 th
Fail 4 th
Fail 4 th
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"""" " " "
" " " "
S1 S2 SR SL1 SL2 S1 S2 SR SL1 S1 S2 SR SL1 S1 S2 SR SL1 SL2
3 rd SL2 SL2GearS1 S2 OFF
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3 rd 4 th
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Position
± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±569
763 Author: Date:
2005 SEQUOIA (RM1146U)
: ON
X: OFF

": Condition in the electrical malfunction is shown on the left of º"º.
Condition in the fail±safe mode is shown on the right of º"º.
E/B: Engine brake.

DIDJ3±01
DI±570
± DIAGNOSTICSAUTOMATIC TRANSMISSION
764 Author: Date:
2005 SEQUOIA (RM1146U)
DATA LIST / ACTIVE TEST
1. DATA LIST
HINT:
According to the DATA LIST displayed by the OBD II scan tool or hand±held tester, you can read the value
of the switch, sensor, actuator and so on without parts removal. Reading the DATA LIST as the first step of
troubleshooting is one method to shorten labor time.
(a) Warm up the engine.
(b) Turn the ignition switch off.
(c) Connect the OBD II scan tool or hand±held tester to the DLC3.
(d) Turn the ignition switch to the ON position.
(e) Push the ºONº button of the OBD II scan tool or the hand±held tester.
(f) When you use the hand±held tester:
Select the item ºDIAGNOSIS / ENHANCED OBD II / DATA LISTº.
(g) According to the display on the tester, read the ºDATA LISTº.
ItemMeasurement Item/
Range (display)Normal ConditionDiagnostic Note
STOP LIGHT SWStop light SW Status/
ON or OFF
Brake Pedal is depressed: ON

Brake Pedal is released: OFF±
PNP SW [NSW]PNP SW Status/
ON or OFFShift lever position is;
P and N: ON
Except P and N: OFF
When the shift lever position dis-
played on the hand±held tester dif-
fers from the actual position, ad-
justment of the PNP switch or the
shift cable may be incorrect.
HINT:
When the failure still occurs even
after adjusting these parts,
See page DI±576.
LOWPNP SW Status/
ON or OFF

Shift lever position is 2: OFF
O

Shift position L switch Push: ON
O

Shift position L switch Push: OFF
=
2NDPNP SW Status/
ON or OFFShift lever position is;
2 and L: ON
Except 2 and L: OFF
=
3RDPNP SW Status/
ON or OFFShift lever position is;
3: ON
Except 3: OFF
=
DRIVEPNP SW Status/
ON or OFFShift lever position is;
D: ON
Except D: OFF
=
REVERSEPNP SW Status/
ON or OFFShift lever position is;
R: ON
Except R: OFF
=
OVERDRV CUT SW2O/D SW Status/
ON or OFF

IG SW ON: ON
O

O/D SW Push: OFF
O

O/D SW Push: ON
±
SHIFTActual Gear Position/
1st, 2nd, 3rd, 4th or 5th
Shift lever position is;

L: 1st

2: 1st or 2nd

3: 1st, 2nd or 3rd

4(O/D OFF): 1st, 2nd, 3rd or 4th

D: 1st, 2nd, 3rd, 4th or 5th
±

± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±571
765 Author: Date:
2005 SEQUOIA (RM1146U)LOCK UP SOL
Lock Up Solenoid Status/
ON or OFF
Lock Up: ON

Except Lock Up: OFF±
SOLENOID (SLT)Shift Solenoid SLT Status/
ON or OFF

Accelerator pedal is depressed:
OFF

Accelerator pedal is released:
ON
±
SOLENOID (SLU)Shift Solenoid SLU Status/
ON or OFF
Lock Up: ON

Except Lock Up: OFF±
AT FLUID TEMP 1
ATF Temp. Sensor No.1 Value/
min.: ±40C (±40F)
max.: 215C (419F)
After Stall Test;
Approx. 80C (176F)

Equal to ambient temperature
when cold soakIf the value is º±40C (±40F)º or
º215C (419F)º, ATF temp. sen-
sor No.1 circuit is open or shorted.
AT FLUID TEMP 2
ATF Temp. Sensor No.2 Value/
min.: ±40C (±40F)
max.: 215C (419F)
After Stall Test;
Approx. 80C (176F)

Equal to ambient temperature
when cold soakIf the value is º±40C (±40F)º or
º215C (419F)º, ATF temp. sen-
sor No.2 circuit is open or shorted.
SPD (SP2)
Output shaft Speed/
min.: 0 km/h (0 mph)
max.: 255 km/h (158 mph)Vehicle stopped: 0 km/h (0 mph)
[HINT]
Equal to vehicle speed
±
SPD (NT)Input Turbine Speed/
display: 50 r/min
[HINT]

Lock±up ON (After warming up
the engine);
Input Turbine speed (NT) equal to
the engine speed.

Lock±up OFF (Idling at N posi-
tion);
Input Turbine speed (NT) nearly
equal to the engine speed.
±

DI±572
± DIAGNOSTICSAUTOMATIC TRANSMISSION
766 Author: Date:
2005 SEQUOIA (RM1146U)
2. ACTIVE TEST
HINT:
Performing the ACTIVE TEST using the hand±held tester allows the relay, VSV, actuator and so on to oper-
ate without parts removal. Performing the ACTIVE TEST as the first step of troubleshooting is one method
to shorten labor time.
It is possible to display the DATA LIST during the ACTIVE TEST.
(a) Warm up the engine.
(b) Turn the ignition switch off.
(c) Connect the hand±held tester to the DLC3.
(d) Turn the ignition switch to the ON position.
(e) Turn on the tester.
(f) Select the item ºDIAGNOSIS / ENHANCED OBD II / ACTIVE TESTº.
(g) According to the display on the tester, perform the ºACTIVE TESTº.
ItemTest DetailsDiagnostic Note
SHIFT
[Test Details]
Operate the shift solenoid valve and set each shift position by yourself.
[Vehicle Condition]
Less than 50 km/h (31 mph)
[Others]

Press º"º button: Shift up

Press ºuº button: Shift down
Possible to check the operation of
the shift solenoid valves.
LOCK UP
[Test Details]
Control the shift solenoid SLU to set the automatic transmission to the
lock±up condition.
[Vehicle Condition]

Throttle valve opening angle: Less than 35 %

Vehicle Speed: 60 km/h (37 mph) or more
Possible to check the SLU opera-
tion.
LINE PRESS UP *
[Test Details]
Operate the shift solenoid SLT and raise the line pressure.
[Vehicle Condition]

Vehicle Stopped.

IDL: ON
[HINT]
OFF: Line pressure up (When the active test of ºControl the Line Pres-
sure Upº is performed, the ECM commands the SLT solenoid to turn
off).
ON: No action (normal operation)
±
*: ºLINE PRESS UPº in the ACTIVE TEST is performed to check the line pressure changes by connecting
the SST to the automatic transaxle, which is used in the HYDRAULIC TEST (See page DI±540) as well.
HINT:
The pressure values in ACTIVE TEST and HYDRAULIC TEST are different from each other.

DIDJ4±01
± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±573
767 Author: Date:
2005 SEQUOIA (RM1146U)
DIAGNOSTIC TROUBLE CODE CHART
If a DTC is displayed during the DTC check, check the parts listed in the table below and proceed to the page
given.
HINT:
*1 :
... The MIL (Malfunction Indicator Lamp) lights up
*2 :  ... The ECM memorizes the trouble code if the ECM detects the DTC detection condition.
This DTC may be output when the clutch, brake and gear components etc. inside the automatic trans-
mission are damaged.
DTC No.
(See Page)Detection ItemTrouble AreaMIL *1Memory *2
P0500
(DI±278)Vehicle Speed Sensor ºAº
Open or short in speed sensor (SP2) circuit
Speed sensor (SP2)
ECM


P0705
(DI±576)Transmission Range Sensor Cir-
cuit Malfunction (PRNDL Input)Open or short in park/neutral position switch circuit
Park/neutral position switch
ECM


P0710
(DI±582)Transmission Fluid Temperature
Sensor ºAº CircuitOpen or short in ATF temperature sensor No.1 circuit
Transmission wire (ATF temperature sensor No.1)
ECM


P0711
(DI±588)Transmission Fluid Temperature
Sensor ºAº PerformanceTransmission wire (ATF temperature sensor No.1)

P0712
(DI±582)Transmission Fluid Temperature
Sensor ºAº Circuit Low InputShort in ATF temperature sensor No.1 circuit
Transmission wire (ATF temperature sensor No.1)
ECM


P0713
(DI±582)Transmission Fluid Temperature
Sensor ºAº Circuit High InputOpen in ATF temperature sensor No.1 circuit
Transmission wire (ATF temperature sensor No.1)
ECM


P0717
(DI±591)Input Speed Sensor Circuit No
Signal
Open or short in speed sensor (NT) circuit
Speed sensor (NT)
ECM
Automatic transmission (clutch, brake or gear, etc.)


P0722
(DI±596)Output Speed Sensor Circuit No
Signal
Open or short in speed sensor (SP2) circuit
Speed sensor (SP2)
ECM
Automatic transmission (clutch, brake or gear, etc.)


P0724
(DI±600)Brake Switch ºBº Circuit High
Short in stop light switch signal circuit
Stop light switch
ECM


P0748
(DI±603)Pressure Control Solenoid ºAº
Electrical
(Shift Solenoid Valve SL1)Open or short in shift solenoid valve SL1 circuit
Shift solenoid valve SL1
ECM


P0751
(DI±608)Shift Solenoid ºAº Performance
(Shift Solenoid Valve S1)Shift solenoid valve S1 remains open or closed
Valve body is blocked
Automatic transmission (clutch, brake or gear, etc.)


P0756
(DI±614)Shift Solenoid ºBº Performance
(Shift Solenoid Valve S2)Shift solenoid valve S2 remains open or closed
Valve body is blocked
Automatic transmission (clutch, brake or gear, etc.)


P0771
(DI±620)Shift Solenoid ºEº Performance
(Shift Solenoid Valve SR)
Shift solenoid valve SR remains open or closed
Shift solenoid valve SL1 remains open or closed
Valve body is blocked
Automatic transmission (clutch, brake or gear, etc.)



DI±574
± DIAGNOSTICSAUTOMATIC TRANSMISSION
768 Author: Date:
2005 SEQUOIA (RM1146U)P0776
(DI±625)
Pressure Control Solenoid ºBº
Performance
(Shift Solenoid Valve SL2)Shift solenoid valve SL2 remains open or closed
Valve body is blocked
Automatic transmission (clutch, brake or gear, etc.)


P0778
(DI±631)Pressure Control Solenoid ºBº
Electrical
(Shift Solenoid Valve SL2)Open or short in shift solenoid valve SL2 circuit
Shift solenoid valve SL2
ECM


P0781
(DI±636)1±2 Shift (1 ±2 Shift Valve)Valve body is blocked up or stuck (1±2 shift valve)
Automatic transmission (clutch, brake or gear, etc.)

P0973
(DI±641)Shift Solenoid ºAº Control Circuit
Low (Shift Solenoid Valve S1)Short in shift solenoid valve S1 circuit
Shift solenoid valve S1
ECM


P0974
(DI±641)Shift Solenoid ºAº Control Circuit
High (Shift Solenoid Valve S1)Open in shift solenoid valve S1 circuit
Shift solenoid valve S1
ECM


P0976
(DI±646)Shift Solenoid ºBº Control Circuit
Low (Shift Solenoid Valve S2)Short in shift solenoid valve S2 circuit
Shift solenoid valve S2
ECM


P0977
(DI±646)Shift Solenoid ºBº Control Circuit
High (Shift Solenoid Valve S2)Open in shift solenoid valve S2 circuit
Shift solenoid valve S2
ECM


P0985
(DI±651)Shift Solenoid ºEº Control Circuit
Low (Shift Solenoid Valve SR)Short in shift solenoid valve SR circuit
Shift solenoid valve SR
ECM


P0986
(DI±651)Shift Solenoid ºEº Control Circuit
High (Shift Solenoid Valve SR)Open in shift solenoid valve SR circuit
Shift solenoid valve SR
ECM


P2714
(DI±656)Pressure Control Solenoid ºDº
Performance
(Shift Solenoid Valve SLT)Shift solenoid valve SLT remains open or closed
Valve body is blocked
Automatic transmission (clutch, brake or gear, etc.)


P2716
(DI±662)Pressure Control Solenoid ºDº
Electrical
(Shift Solenoid Valve SLT)Open or short in shift solenoid valve SLT circuit
Shift solenoid valve SLT
ECM


P2740
(DI±666)Transmission Fluid Temperature
Sensor ºBº CircuitOpen or short in ATF temperature sensor No.2 circuit
Transmission wire (ATF temperature sensor No.2)
ECM


P2742
(DI±666)Transmission Fluid Temperature
Sensor ºBº Circuit Low InputShort in ATF temperature sensor No.2 circuit
Transmission wire (ATF temperature sensor No.2)
ECM


P2743
(DI±666)Transmission Fluid Temperature
Sensor ºBº Circuit High InputOpen in ATF temperature sensor No.2 circuit
Transmission wire (ATF temperature sensor No.2)
ECM


P2757
(DI±672)
Torque Converter Clutch Pres-
sure Control Solenoid Perfor-
mance
(Shift Solenoid Valve SLU)Shift solenoid valve SLU remains open or closed
Valve body is blocked
Torque converter clutch
Automatic transmission (clutch, brake or gear, etc.)
Line pressure is too low


P2759
(DI±680)
Torque Converter Clutch Pres-
sure Control Solenoid Control
Circuit Electrical
(Shift Solenoid Valve SLU)Open or short in shift solenoid valve SLU circuit
Shift solenoid valve SLU
ECM



± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±575
769 Author: Date:
2005 SEQUOIA (RM1146U)P2772*
(DI±685)
Transfer L4 SW Circuit
Short in transfer L4 position switch circuit
Transfer L4 position switch
4WD control ECU
ECM


HINT:
*: 4WD

DIDJ5±01
DI±576
± DIAGNOSTICSAUTOMATIC TRANSMISSION
770 Author: Date:
2005 SEQUOIA (RM1146U)
CIRCUIT INSPECTION
DTC P0705 Transmission Range Sensor Circuit Mal-
function (PRNDL Input)
CIRCUIT DESCRIPTION
The park/neutral position switch detects the shift lever position and sends signals to the ECM.
DTC No.DTC Detection ConditionTrouble Area
P0705
(2±trip detection logic)

All switches are OFF simultaneously for NSW, R, N, D, 3 and
2 positions.

2 or more switches are ON simultaneously for NSW, R, D, 3
and 2 positions.

Open or short in park/neutral position switch circuit

Park/neutral position switch

ECM
MONITOR DESCRIPTION
These DTCs indicate a problem with the park/neutral position switch and the wire harness in the park/neutral
position switch circuit.
The park/neutral position switch detects the shift lever position and sends a signal to the ECM.
For security, the park/neutral position switch detects the shift lever position so that engine can be started
only when the shift lever is in the P or N position.
The park/neutral position switch sends a signal to the ECM according to the shift position (NSW, R, D, 3 or
2).
The ECM determines that there is a problem with the switch or related parts if it receives more than 1 position
signal simultaneously. The ECM will turn on the MIL and store the DTC.
MONITOR STRATEGY
Related DTCsP0705Park/neutral position switch/Verify switch input
Required sensors/ComponentsPark/neutral position switch
Frequency of operationContinuous
DtiCondition (A)2 sec.DurationCondition (B)60 sec.
MIL operation2 driving cycle
Sequence of operationNone
TYPICAL ENABLING CONDITIONS
ItSpecificationItemMinimumMaximum
The monitor will run whenever this DTC is
not present.See page DI±545
Ignition switchON
Battery voltage10.5 V or more

± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±577
771 Author: Date:
2005 SEQUOIA (RM1146U)
TYPICAL MALFUNCTION THRESHOLDS
Detection criteriaThreshold
One of the following conditions is met: Condition (A) or (B)
Condition (A)
Number of the following signal input at the same time2 or more
NSW switch
R switch
D switchON
3 switch
ON
2 switch
Condition (B)
All of following conditions are met
N switch
NSW switch
R switchOFF D switchOFF
3 switch
2 switch
COMPONENT OPERATING RANGE
ParameterStandard value
Park/neutral position switchThe park/neutral position switch sends only one signal to the ECM.

D14218
ECM
R
D
2 3 E78
STAR/NSW
11
E5
E521
E519
E510 J52
J52
J52
J52
J52
J52 J/C
J51
J51
J51
J51
J51
J51B
L±Y
B±Y
W±R
L
LG LGL W±RB±YL±Y
L±R
L±R
B±Y W±L
W BG±R* G±R P
PL
RL
NL
DL
2L
LL IG49
1D 1C
IPOGAUGE
IG1
AM1 74
8
7
1C
1L16AM1
2 1 ALT
BatteryF10
FL BlockCowl Side J/B LHI18
Ignition SW Cowl Side J/B RHTo 4WD Control ECU
To Translate ECU To Starter RelayP1
Park/Neutral Position SW
*: 4WD 21 N
8 54
5
6
1
9
7
3
8AEG GF HA H
C C
F
E
2
RB DI±578
± DIAGNOSTICSAUTOMATIC TRANSMISSION
772 Author: Date:
2005 SEQUOIA (RM1146U)
WIRING DIAGRAM