transmission TOYOTA SEQUOIA 2001 Service Repair Manual

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

± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±579
773 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
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
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.
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
=

D14154
Switch Side:
(Connector Front View):
P1
DI±580
± DIAGNOSTICSAUTOMATIC TRANSMISSION
774 Author: Date:
2005 SEQUOIA (RM1146U)
1 Inspect park/neutral position switch.
PREPARATION:
(a) Jack up the vehicle.
(b) Disconnect the park/neutral position switch connector.
CHECK:
Measure the resistance according to the value(s) in the table
below when the shift lever is moved to each position.
OK:
Shift PositionTester ConnectionSpecified Condition
P2 ± 6 and 4 ± 5Below 1 W
Except P=10 kW or higher
R2 ± 1Below 1 W
Except R=10 kW or higher
N2 ± 9 and 4 ± 5Below 1 W
Except N=10 kW or higher
D2 ± 7Below 1 W
Except D=10 kW or higher
32 ± 3Below 1 W
Except 3=10 kW or higher
22 ± 8Below 1 W
Except 2=10 kW or higher
NG Replace park/neutral position switch
(See page AT±9).
OK

D14155
E8E7E6E5E4
R(+)
D(+)2(+)
3(+)
STAR/NSW(+)
ECM:
± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±581
775 Author: Date:
2005 SEQUOIA (RM1146U)
2 Check harness and connector (Park/neutral position switch ± ECM).
PREPARATION:
(a) Connect the park/neutral position switch connector.
(b) Turn the ignition switch ON.
CHECK:
Measure the voltage according to the value(s) in the table be-
low when the shift lever is moved to each position.
OK:
Shift PositionTester connectionSpecified condition
P and NE7 ± 8 (STAR/NSW) ± Body groundBelow 2 V
Except P and N=10 to 14 V
RE5 ± 11 (R) ± Body ground10 to 14 V*
Except R=Below 1 V
D and 4E5 ± 21 (D) ± Body ground10 to 14 V
Except D and 4=Below 1 V
3E5 ± 19 (3) ± Body ground10 to 14 V
Except 3=Below 1 V
2 and LE5 ± 10 (2) ± Body ground10 to 14 V
Except 2 and L=Below 1 V
HINT:
*: The voltage will drop slightly due to lighting up of the back up
light.
NG Repair or replace the harness or connector
(See page IN±35).
OK
Replace the ECM (See page SF±80).

DI±582
± DIAGNOSTICSAUTOMATIC TRANSMISSION
776 Author: Date:
2005 SEQUOIA (RM1146U)
DTC P0710 Transmission Fluid Temperature Sensor ºAº
Circuit
DTC P0712 Transmission Fluid Temperature Sensor ºAº
Circuit Low Input
DTC P0713 Transmission Fluid Temperature Sensor ºAº
Circuit High Input
DIDJ6±01

A67628A67628D14156
Acceptable
Resistance
Te m p .
± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±583
777 Author: Date:
2005 SEQUOIA (RM1146U)
CIRCUIT DESCRIPTION
The ATF (Automatic Transmission Fluid) temperature sensor
converts the fluid temperature into a resistance value which is
input into the ECM.
The ECM applies a voltage to the temperature sensor through
ECM terminal THO1.
The sensor resistance changes with the transmission fluid tem-
perature. As the temperature becomes higher, the sensor resis-
tance decreases.
One terminal of the sensor is grounded so that the sensor resis-
tance decreases and the voltage goes down as the tempera-
ture becomes higher.
The ECM calculates the fluid temperature based on the voltage
signal.
DTC No.DTC Detection ConditionTrouble Area
P0710
(a) and (b) are detected momentarily within 0.5 sec. when
neither P0712 nor P0713 is detected (1±trip detection logic)
(a) ATF temperature sensor No.1 resistance is less than 79 W.
(b) ATF temperature sensor No.1 resistance is more than 156
kW.
HINT:
Within 0.5 sec., the malfunction switches from (a) to (b) or from
(b) to (a)

Open or short in ATF temperature sensor No.1 circuit

Transmission wire (ATF temperature sensor No.1)

ECM
P0712ATF temperature sensor No.1 resistance is less than 79 W for
0.5 sec. or more (1±trip detection logic)
Short in ATF temperature sensor No.1 circuit

Transmission wire (ATF temperature sensor No.1)

ECM
P0713
ATF temperature No.1 sensor resistance is more than 156 kW
when 15 minutes or more have elapsed after the engine start
DTC is detected for 0.5 sec. or more (1±trip detection logic)
Open in ATF temperature sensor No.1 circuit

Transmission wire (ATF temperature sensor No.1)

ECM
MONITOR DESCRIPTION
These DTCs indicate an open or short in the automatic transmission fluid (ATF) temperature sensor circuit.
The automatic transmission fluid (ATF) temperature sensor converts ATF temperature to an electrical resis-
tance value. Based on the resistance, the ECM determines the ATF temperature, and the ECM detects an
open or short in the ATF temperature circuit. If the resistance value of the ATF temperature is less than 79W
*1
or more than 156kW*2, the ECM interprets this as a fault in the ATF sensor or wiring. The ECM will turn on
the MIL and store the DTC.
*1: 150C (302F) or more is indicated regardless of the actual ATF temperature.
*2: ±40C (±40F) is indicated regardless of the actual ATF temperature.
HINT:
The ATF temperature can be checked on the OBD II scan tool or hand±held tester display.

DI±584
± DIAGNOSTICSAUTOMATIC TRANSMISSION
778 Author: Date:
2005 SEQUOIA (RM1146U)
MONITOR STRATEGY
P0710ATF temperature sensor/Range check (Fluttering)
Related DTCsP0712ATF temperature sensor/Range check (Low resistance)Related DTCs
P0713ATF temperature sensor/Range check (High resistance)
Required sensors/ComponentsATF temperature sensor (TFT sensor)
Frequency of operationContinuous
Duration0.5 sec.
MIL operationImmediate
Sequence of operationNone
TYPICAL ENABLING CONDITIONS
ItSpecificationItemMinimumMaximum
The monitor will run whenever these
DTCs are not present.See page DI±545
Range check (Fluttering, Low resistance)
The typical enabling condition is not avail-
able.±
Range check (High resistance)
Time after engine start15 min. or more±
TYPICAL MALFUNCTION THRESHOLDS
Detection criteriaThreshold
Range check (Fluttering)
TFT (transmission fluid temperature) sensor resistance
Less than 79 W
or
More than 156 kW
Range check (Low resistance)
TFT (transmission fluid temperature) sensor resistanceLess than 79 W
Range check (High resistance)
TFT (transmission fluid temperature) sensor resistanceMore than 156 kW
COMPONENT OPERATING RANGE
ParameterStandard value
TFT (transmission fluid temperature) sensorAtmospheric temperature to approx. 130°C (266°F)

D14157
O E1 Electronically Controlled
Transmission Solenoid
OT±O
OT+
L
OT2±L
OT2+ G±W
G±W
G±WG
B±L
G±W 2
110
9E7
E7
E828 32 24
THO2 THO1
E2ECM
± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±585
779 Author: Date:
2005 SEQUOIA (RM1146U)
WIRING DIAGRAM
INSPECTION PROCEDURE
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 Condition
AT FLUID TEMP 1
ATF Temp. Sensor Value/
min.: ±40C (±40F)
max.: 215C (419F)
After Stall Test;
Approx. 80C (176F)

Equal to ambient temperature when cold soak
HINT:
When DTC P0712 is output and hand±held tester output is 150C (302F) or more, there is a short circuit.
When DTC P0713 is output and hand±held tester output is ±40C (±40F), there is an open circuit.
Measure the resistance between terminal THO1 (OT) and body ground.
Temperature DisplayedMalfunction
±40°C (±40°F)Open circuit
150°C (302°F) or moreShort circuit
HINT:
If a circuit related to the ATF temperature sensor becomes open, P0713 is immediately set (in 0.5 second).
When P0713 is set, P0711 cannot be detected.
It is not necessary to inspect the circuit when P0711 is set.