2001 TOYOTA SEQUOIA Service Repair Manual

bulb fuel pressure hood open display clock setting coolant

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Page 801 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual D14165
Sensor Side:
(Connector Front View):
21 V2
D14166
ECM:
SP2+ SP2±E8E7E6E5E4
± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±599
793 Author: Date:
2005 SEQUOIA (RM1146U)
2 Inspect speed sensor SP2.

Page 802 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual DI±600
± DIAGNOSTICSAUTOMATIC TRANSMISSION
794 Author: Date:
2005 SEQUOIA (RM1146U)
DTC P0724 Brake Switch ºBº Circuit High
CIRCUIT DESCRIPTION
The purpose of this circuit is to prevent the en

Page 803 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual ± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±601
795 Author: Date:
2005 SEQUOIA (RM1146U)
WIRING DIAGRAM
See page DI±283.
INSPECTION PROCEDURE
1 Read value of DATA LIST (STP signal).
HINT:
According

Page 804 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual I21525
Free Pushed in
D14167
ECM:
E8E7E6E5E4
STP(+)
DI±602
± DIAGNOSTICSAUTOMATIC TRANSMISSION
796 Author: Date:
2005 SEQUOIA (RM1146U)
2 Inspect stop light switch.
PREPARATION:
Remove the stop

Page 805 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual ± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±603
797 Author: Date:
2005 SEQUOIA (RM1146U)
DTC P0748 Pressure Control Solenoid ºAº Electrical
(Shift Solenoid Valve SL1)
CIRCUIT DESCRIPTION
Shifting f

± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±603
797 Author: Date:
2005 SEQUOIA (RM1146U)
DTC P0748 Pressure Control Solenoid ºAº Electrical
(Shift Solenoid Valve SL1)
CIRCUIT DESCRIPTION
Shifting from 1st to 5th is performed in combination with ºONº and ºOFFº operation of the shift solenoid valves
SL1, SL2, S1, S2 and SR which are controlled by the ECM. If an open or short circuit occurs in either of the
shift solenoid valves, the ECM controls the remaining normal shift solenoid valves to allow the vehicle to be
operated smoothly (See page DI±567).
DTC No.DTC Detection ConditionTrouble Area
P0748
ECM checks for an open or short circuit in shift solenoid valves
SL1 (1±trip detection logic)
(a) When solenoid, duty ratio equal to 100%
(b) When solenoid is not energized, duty ratio is less than 3%Open or short in shift solenoid valve SL1 circuit
Shift solenoid valve SL1
ECM
MONITOR DESCRIPTION
This DTC indicates an open or short in the shift solenoid valve SL1 circuit. The ECM commands gearshift
by turning the shift solenoid valves ºON/OFFº. When there is an open or short circuit in any shift solenoid
valve circuit, the ECM detects the problem and illuminates the MIL and stores the DTC. And the ECM per-
forms the fail±safe function and turns the other normal shift solenoid valves ºON/OFFº. (In case of an open
or short circuit, the ECM stops sending current to the circuit.)
While driving and shifting between 4th and 5th gears, if the ECM detects an open or short in the shift solenoid
valve SL1 circuit, the ECM determines there is a malfunction (See page DI±567).
MONITOR STRATEGY
Related DTCsP0748Shift solenoid valve SL1/Range check
Required sensors/ComponentsShift solenoid valve SL1
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
Battery voltage10 V or more±
CPU commanded duty±Less than 75%
Ignition switchON
SwitchOFF
TYPICAL MALFUNCTION THRESHOLDS
Detection criteriaThreshold
Output signal duty100%
DIDJB±01

Page 806 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual D14168
Electronically Controlled
Transmission Solenoid
E7ECM
L R±B19
18SL1+
SL1± 12
4 L R E1
SL1+
SL1±+B
CPU
E7 DI±604
± DIAGNOSTICSAUTOMATIC TRANSMISSION
798 Author: Date:
2005 SEQUOIA (RM1

Page 807 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual ECM command gearshift
Shift solenoid valve SL11st 2nd 3rd 4th 5th
OFF OFF OFF ONOFF
1
152 3 4 5 6 7 8
9 10 11 12
13 14
D11994
SL1±
SL1+
E1
Transmission Wire Side:
(Connector Front View):
± DIAGNOSTI

Page 808 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual D14166
ECM:
SL1+
SL1±E8E7E6E5E4
DI±606
± DIAGNOSTICSAUTOMATIC TRANSMISSION
800 Author: Date:
2005 SEQUOIA (RM1146U)
2 Check harness and connector (Transmission wire ± ECM)
PREPARATION:
(a) Con

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