2001 TOYOTA SEQUOIA Page 18

D11987
2
1
(+)
(±) Shift Solenoid Valve SLT:
± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±661
855 Author: Date:
2005 SEQUOIA (RM1146U)
2 Inspect shift solenoid valve SLT operation.
PREPARATION:
Remove the shift solenoid valve SLT (See page AT±10).
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionSpecified Condition
20C (68F)
1 ± 25.0 to 5.6 W
CHECK:
Connect the positive (+) lead with a 21 W bulb to terminal 2 and
the negative (±) lead to terminal 1 of the solenoid valve connec-
tor, then check the movement of the valve.
OK:
The solenoid makes an operating sound.
NG Replace the shift solenoid valve SLT
(See page AT±10).
OK
3 Inspect valve body (See page AT±10).
OK:
There are no foreign objects on each valve.
NG Repair or replace valve body.
OK
Repair or replace transmission (See page
AT±25).

DI±662
± DIAGNOSTICSAUTOMATIC TRANSMISSION
856 Author: Date:
2005 SEQUOIA (RM1146U)
DTC P2716 Pressure Control Solenoid ºDº Electrical
(Shift Solenoid Valve SLT)
CIRCUIT DESCRIPTION
See page DI±656
DTC No.DTC Detection ConditionTrouble Area
P2716Open or short is detected in shift solenoid valve SLT circuit for
1 second or more while driving (1±trip detection logic).
Open or short in shift solenoid valve SLT circuit

Shift solenoid valve SLT

ECM
MONITOR DESCRIPTION
When an open or short in the linear solenoid valve (SLT) circuit is detected, the ECM interprets this as a fault.
The ECM will turn on the MIL and store the DTC.
MONITOR STRATEGY
Related DTCsP2716Shift solenoid valve SLT/Range check
Required sensors/ComponentsShift solenoid valve SLT
Frequency of operationContinuous
Duration1 sec.
MIL operationImmediate
Sequence of operationNone
TYPICAL ENABLING CONDITIONS
ItSpecificationItemMinimumMaximum
The monitor will run whenever this DTC is
not present.See page DI±545
Solenoid current cut statusNot cut
Battery voltage11 V or more±
CPU command duty ratio to SLT19% or more±
Ignition switchON
StarterOFF
TYPICAL MALFUNCTION THRESHOLDS
Detection criteriaThreshold
Solenoid status from ICFail (Open or short)
COMPONENT OPERATING RANGE
ParameterStandard value
Output signal dutyLess than 100%
DIDJM±01

D14166
ECM:
SLT+
SLT±E8E7E6E5E4
DI±664
± DIAGNOSTICSAUTOMATIC TRANSMISSION
858 Author: Date:
2005 SEQUOIA (RM1146U)
2 Check harness and connector (Transmission wire ± ECM)
PREPARATION:
(a) Connect the transmission wire connector.
(b) Disconnect the ECM connector.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionSpecified Condition
20C (68F)
E7 ± 13 (SLT+) ± E7 ± 12 (SLT±)5.0 to 5.6 W
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionSpecified Condition
E7 ± 13 (SLT+) ± Body ground10 kW or higher
E7 ± 12 (SLT±) ± Body ground=
NG Repair or replace the harness or connector
(See page IN±35).
OK
Replace the ECM (See page SF±80).

D11987
2
1
(+)
(±) Shift Solenoid Valve SLT:
± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±665
859 Author: Date:
2005 SEQUOIA (RM1146U)
3 Inspect shift solenoid valve SLT.
PREPARATION:
Remove the shift solenoid valve SLT (See page AT±10).
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionSpecified Condition
20C (68F)
1 ± 25.0 to 5.6 W
CHECK:
Connect the positive (+) lead with a 21 W bulb to terminal 2 and
the negative (±) lead to terminal 1 of the solenoid valve connec-
tor, then check the movement of the valve.
OK:
The solenoid makes an operating sound.

NG Replace the shift solenoid valve SLT
(See page AT±10).
OK
Repair or replace the transmission wire
(See page AT±7).

± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±667
861 Author: Date:
2005 SEQUOIA (RM1146U)DTC No.
DTC Detecting ConditionTrouble Area
P2740
(a) and (b) are detected momentarily within 0.5 sec. when
neither P2742 nor P2743 is detected (1±trip detection logic)
(a) ATF temperature sensor No.2 resistance is less than 25 W
(0.046 V)
(b) ATF temperature sensor No.2 resistance is more than 156
kW (4.915 V)
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.2 circuit

Transmission wire (ATF temperature sensor No.2)

ECM
P2742ATF temperature sensor No.2 resistance is less than 25 W
(0.046 V) for 0.5 sec. or more (1±trip detection logic)
Short in ATF temperature sensor No.2 circuit

Transmission wire (ATF temperature sensor No.2)

ECM
P2743
ATF temperature No.2 sensor resistance is more than 156 kW
(4.915 V) when 15 minutes or more after the engine start
DTC is detected for 0.5 sec. or more (1±trip detection logic)
Open in ATF temperature sensor No.2 circuit

Transmission wire (ATF temperature sensor No.2)

ECM
MONITOR DESCRIPTION
The Automatic Transmission Fluid (ATF) temperature sensor converts ATF temperature to an electrical re-
sistance value. Based on the resistance, the ECM determines the ATF temperature, and the ECM detects
an open or short in the AFT temperature circuit. If the resistance value of the ATF temperature is less than
25 W (0.046 V) or more than 156 kW (4.915 V), the ECM interprets this as a fault in the ATF sensor or wiring.
The ECM will turn on the MIL and store the DTC.
MONITOR STRATEGY
P2740ATF temperature sensor/Range check (Fluttering)
Related DTCsP2742ATF temperature sensor/Range check (Low voltage)Related DTCs
P2743ATF temperature sensor/Range check (High voltage)
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 voltage)
The typical enabling condition is not avail-
able.±
Range check (High voltage)
Time after engine start15 min. or more±

1
152 3 4 5 6 7 8
9 10 11 12
13 14
D11994OT2+OT2±
Transmission Wire Side:
(Connector Front View):
E1
DI±670
± DIAGNOSTICSAUTOMATIC TRANSMISSION
864 Author: Date:
2005 SEQUOIA (RM1146U)
1 Inspect transmission wire (ATF temperature sensor No.2)
PREPARATION:
Disconnect the transmission wire connector from the transmis-
sion.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionSpecified Condition
1 (OT2±) ± 9 (OT2+)25 W to 156 kW
1 (OT2±) ± Body ground10 kW or higher
9 (OT2+) ± Body ground10 kW or higher
HINT:
If the resistance is out of the specified range with either the ATF
temperature shown in the table below, the driveability of the ve-
hicle may decrease.
ATF TemperatureSpecified Condition
20°C (68°F)3 to 4 kW
110°C (230°F)0.22 to 0.28 kW
NG Repair or replace the transmission wire
(ATF temperature sensor No.2)
(See page AT±7).
OK

D14161
E8E7E6E5E4ECM:
THO2
E2
± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±671
865 Author: Date:
2005 SEQUOIA (RM1146U)
2 Check harness and connector (Transmission wire ± ECM)
PREPARATION:
(a) Connect the transmission wire connector.
(b) Disconnect the connector of the ECM.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionSpecified Condition
E7 ± 32 (THO2) ± E8 ± 28 (E2)25 W to 156 kW
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionSpecified Condition
E7 ± 32 (THO2) ± Body ground10 kW or higher
E8 ± 28 (E2) ± Body ground=
NG Repair or replace the harness or connector
(See page IN±35).
OK
Replace the ECM (See page SF±80).

± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±677
871 Author: Date:
2005 SEQUOIA (RM1146U)
1 Check other DTCs output (in addition to DTC P2757).
PREPARATION:
(a) Turn the ignition switch off.
(b) Connect the OBD II scan tool or hand±held tester to the DLC3.
(c) Turn the ignition switch to the ON position.
(d) Turn on the tester.
(e) Select the item ºDIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODESº.
CHECK:
Read the DTCs using the OBD II scan tool or the hand±held tester.
RESULT:
Display (DTC output)Proceed to
Only ºP2757º is outputA
ºP2757º and other DTCsB
HINT:
If any other codes besides ºP2757º are output, perform troubleshooting for those DTCs first.
B Go to DTC chart (See page DI±573).
A