2001 TOYOTA HIGHLANDER Service Repair Manual

park assist fog light bulb power steering keyless drain bolt cabin filter

Page 1873 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual C82158C82158C91565
S4
E7E8E9E6E5
ECM:
G28386
Shift Solenoid Valve S4:
(+) (-)
- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E/U140F)05-973
1163 Author: Date:
2005 HIGHLANDER REPA

Page 1874 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual 05-1 100- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E/U151F)
1290 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC P0985 SHIFT SOLENOID ºEº CONTROL CIRCUIT
LOW (SH

05-1 100- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E/U151F)
1290 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC P0985 SHIFT SOLENOID ºEº CONTROL CIRCUIT
LOW (SHIFT SOLENOID VALVE SR)
DTC P0986 SHIFT SOLENOID ºEº CONTROL CIRCUIT
HIGH (SHIFT SOLENOID VALVE SR)
CIRCUIT DESCRIPTION
Shifting from 1st to 5th is performed in combination with ºONº and ºOFFº operation of the shift solenoid valves
SL1, SL2, SL3, S4 and SR which is 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 valve to allow the vehicle to be
operated smoothly (Fail safe function).
DTC No.DTC Detection ConditionTrouble Area
P0985ECM detects short in solenoid valve SR circuit 2 times when
solenoid valve SR is operated (1-trip detection logic)Short in shift solenoid valve SR circuit
Shift solenoid valve SR
ECM
P0986ECM detects open in solenoid valve SR circuit 2 times when
solenoid valve SR is not operated (1-trip detection logic)Open in shift solenoid valve SR circuit
Shift solenoid valve SR
ECM
MONITOR DESCRIPTION
The ECM commands gear shifts 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 performs the fail-safe function and turns the other shift solenoid valves in good
condition ºON/OFFº (In case of an open or short circuit, the ECM stops sending current to the circuit.)
(see page 05-1030).
MONITOR STRATEGY
Related DTCsP0985: Shift solenoid valve SR/Range check (Low resistance)
P0986: Shift solenoid valve SR/Range check (High resistance)
Required sensors/ComponentsShift solenoid valve SR
Frequency of operationContinuous
Duration0.064 sec.
MIL operationImmediate
Sequence of operationNone
TYPICAL ENABLING CONDITIONS
P0985: Range check (Low resistance)
The monitor will run whenever this DTC is not present.See page 05-1007
Shift solenoid valve SRON
Battery voltage8 V or more
Ignition switchON
StarterOFF
P0986: Range check (High resistance)
The monitor will run whenever this DTC is not present.See page 05-1007
Shift solenoid valve SROFF
Battery voltage8 V or more
Ignition switchON
StarterOFF
05C18-12

Page 1875 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual G31165
E1
Electronically Controlled
Transmission SolenoidECM
9
E8SR
9 VL-B
SR+B
CPU
G26426
Transmission Wire Side:
(Connector Front View):
SR
E1
- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXL

Page 1876 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual C82158C91565
SR
E7E8E9E6E5
ECM:
C90640
(+) (-)
Shift Solenoid Valve SR:
05-1 102- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E/U151F)
1292 Author: Date:
2005 HIGHLANDER REPAIR M

Page 1877 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual - DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-243
433 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC P2102 THROTTLE ACTUATOR CONTROL MOTOR
CIRCUIT LOW
DTC P2103 THROTTLE ACTUATOR CONTROL MOTOR
CI

- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-243
433 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC P2102 THROTTLE ACTUATOR CONTROL MOTOR
CIRCUIT LOW
DTC P2103 THROTTLE ACTUATOR CONTROL MOTOR
CIRCUIT HIGH
CIRCUIT DESCRIPTION
The throttle actuator is operated by the ECM and it opens and closes the throttle valve.
The opening angle of the throttle valve is detected by the throttle position sensor which is mounted on the
throttle body. The throttle position sensor provides feedback to the ECM. This feedback allows the ECM to
control the throttle actuator and monitor the throttle opening angle in response to driver inputs.
HINT:
This Electronic Throttle Control System (ETCS) does not use a throttle cable.
DTC No.DTC Detection ConditionTrouble Area
P2102
Conditions (a) and (b) continue for 2.0 seconds:
(a) Throttle actuator output duty 80 % or more
(b) Throttle actuator current 0.5 A or less
(1 trip detection logic)Open in throttle actuator circuit
Throttle actuator
ECM
P2103
Either of following conditions is met:
Throttle actuator current 10 A or more (0.1 seconds)
Throttle actuator current 7 A or more (0.6 seconds)
(1 trip detection logic)Short in throttle actuator circuit
Throttle actuator
Throttle valve
Throttle body assy
ECM
MONITOR DESCRIPTION
The ECM monitors the flow of electrical current through the electronic throttle actuator, and detects malfunc-
tions or open circuits in the throttle motor based on the value of the electrical current. When the current devi-
ates from the standard, the ECM concludes that there is a fault in the throttle motor. Or, if the throttle valve
is not functioning properly (for example, stuck on), the ECM concludes that there is a fault and turns on the
MIL and a DTC is set.
Example:
When the current is more than 10 A, or the current is less than 0.5 A when the actuator driving duty ratio
is more than 80 %, the ECM concludes that the current is deviated from the standard, turns on the MIL and
a DTC is set.
FAIL-SAFE
If the ETCS has a malfunction, the ECM cuts off current to the throttle actuator. The throttle control valve
returns to a predetermined opening angle (approximately 16) by the force of the return spring. The ECM
then adjusts the engine output by controlling the fuel injection (intermittent fuel-cut) and ignition timing in
accordance with the accelerator pedal opening angle to enable the vehicle to continue at a minimal speed.
If the accelerator pedal is depressed firmly and slowly, the vehicle can be driven slowly.
If a ºpassº condition is detected and then the ignition switch is turned OFF, the fail-safe operation will stop
and the system will return to normal condition.
05EVQ-05

Page 1878 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual A87825
T13
Throttle
Actuator
2
1B
WECM
M+
M- Shielded
GE01 M+
M-
E92
E9 E93
17 05-244
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
434 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
MONITOR STRATEGY

Page 1879 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual A59778M- M+
T13
Throttle Actuator
Y
B53781
A81698A85540
Wire Harness Side
M+
M-
E9
ECM
M+ M-
T13
Throttle Actuator
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-245
435 Author: Date:
2005 HIGHLANDER REPAIR MA

Page 1880 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual 05-246
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
436 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
3 INSPECT THROTTLE BODY ASSY
(a) Visually check for foreign objects between the throttle valve and

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