2001 TOYOTA SEQUOIA Service Repair Manual

navigation seats jacking points auxiliary battery location wheel check engine light

Load previous 8 pages

Page 873 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual D14161
E8E7E6E5E4ECM:
THO2
E2
± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±671
865 Author: Date:
2005 SEQUOIA (RM1146U)
2 Check harness and connector (Transmission wire ± ECM)
PREPARATION:
(a) Connec

Page 874 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual D14175
G23415D14176
Lock±up
Operation
Pressure
Current Flow to Solenoid DI±672
± DIAGNOSTICSAUTOMATIC TRANSMISSION
866 Author: Date:
2005 SEQUOIA (RM1146U)
DTC P2757Torque Converter Clutch Pre

Page 875 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual ± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±673
867 Author: Date:
2005 SEQUOIA (RM1146U)
MONITOR DESCRIPTION
Torque converter lock±up is controlled by the ECM based on the turbine (input) speed sens

± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±673
867 Author: Date:
2005 SEQUOIA (RM1146U)
MONITOR DESCRIPTION
Torque converter lock±up is controlled by the ECM based on the turbine (input) speed sensor NT, output
speed sensor SP2, engine rpm, engine load, engine temperature, vehicle speed, transmission temperature,
and gear selection. The ECM determines the lock±up status of the torque converter by comparing the engine
rpm (NE) to the input turbine rpm (NT). The ECM calculates the actual transmission gear by comparing input
turbine rpm (NT) to output shaft rpm (SP2). When conditions are appropriate, the ECM requests ºlock±upº
by applying control voltage to the shift solenoid SLU. When the SLU is turned on, it applies pressure to the
lock±up relay valve and locks the torque converter clutch.
If the ECM detects no lock±up after lock±up has been requested or if it detects lock±up when it is not re-
quested, the ECM interprets this as a fault in the shift solenoid valve SLU or lock±up system performance.
The ECM will turn on the MIL and store the DTC.
Example:
When any of the following is met, the system judges it as a malfunction.
(a) There is a difference in rotation between the input side (engine speed) and output side (input turbine
speed) of the torque converter when the ECM commands lock±up.
(Engine speed is at least 70 rpm greater than input turbine speed.)
(b) There is no difference in rotation between the input side (engine speed) and output side (input turbine
speed) of the torque converter when the ECM commands lock±up off.
(The difference between engine speed and input turbine speed is less than 35 rpm.)
MONITOR STRATEGY
RltdDTCP2757Shift solenoid valve SLU/OFF malfunctionRelated DTCsP2757Shift solenoid valve SLU/ON malfunction
MainShift solenoid valve SLU
Required sensors/ComponentsSubValve body, Vehicle speed sensor, Throttle position sensor, Speed sensor
(NT), Speed sensor (NO)
Frequency of operationContinuous
OFF malfunction (A)2 sec.
DurationOFF malfunction (B)0.4 sec.Duration
ON malfunction1.8 sec.
MIL operation2 driving cycles
Sequence of operationNone
TYPICAL ENABLING CONDITIONS
ItSpecificationItemMinimumMaximum
All:
Turbine speed sensor circuitNot circuit malfunction
Output speed sensor circuitNot circuit malfunction
Shift solenoid valve S1 circuitNot circuit malfunction
Shift solenoid valve S2 circuitNot circuit malfunction
Shift solenoid valve SR circuitNot circuit malfunction
Torque converter clutch pressure control
solenoid circuitNot circuit malfunction
KCS sensor circuitNot circuit malfunction
ETCS (Electric throttle control system)Not system down
Transmission rangeºDº

Page 876 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual DI±674
± DIAGNOSTICSAUTOMATIC TRANSMISSION
868 Author: Date:
2005 SEQUOIA (RM1146U) ECT (Engine coolant temperature)
40°C (104°F) or more±
Spark advance from Max. retard timing by
KCS control

Page 877 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual ± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±675
869 Author: Date:
2005 SEQUOIA (RM1146U)
TYPICAL MALFUNCTION THRESHOLDS
Detection criteriaThreshold
Both of the following conditions are met: OFF malfu

Page 878 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual G23400G23400D14177
Accelerator Pedal
Opening Angle
Lock±up OFF
Lock±up ON
"time Engine Speed
Accelerator Pedal
Fully Released DI±676
± DIAGNOSTICSAUTOMATIC TRANSMISSION
870 Author: Date:
2005

Page 879 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual ± 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) Conne

Page 880 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual D12795
12
(±)(+)
12
Shift Solenoid Valve SLU:
DI±678
± DIAGNOSTICSAUTOMATIC TRANSMISSION
872 Author: Date:
2005 SEQUOIA (RM1146U)
2 Check shift solenoid valve SLU operation.
PREPARATION:
Remove

Load next 8 pages

Page: < prev 1-10 ... 841-848 849-856 857-864 865-872 873-880 881-888 889-896 897-904 905-912 ... 4328 next >

horn brake pads replacement power steering fluid mileage keyless ESP