2001 TOYOTA HIGHLANDER Service Repair Manual

adding oil length sat nav transmission oil power steering fluid suspension

Page 1881 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual - DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-247
437 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC P2111 THROTTLE ACTUATOR CONTROL SYSTEM
- STUCK OPEN
DTC P2112 THROTTLE ACTUATOR CONTROL SYSTEM

- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-247
437 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC P2111 THROTTLE ACTUATOR CONTROL SYSTEM
- STUCK OPEN
DTC P2112 THROTTLE ACTUATOR CONTROL SYSTEM
- STUCK CLOSED
CIRCUIT DESCRIPTION
The throttle actuator is operated by the ECM and it opens and closes the throttle valve using gears. 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 to control the throttle actuator and set the
throttle valve 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
P2111Throttle valve locked during ECM order to close
(1 trip detection logic)
Throttle actuator circuit
Throttle actuator
Throttle body
Throttle valve
P2112Throttle valve locked during ECM order to open
(1 trip detection logic)Same as DTC No. P2111
MONITOR DESCRIPTION
The ECM concludes that there is a malfunction of the ETCS when the throttle valve remains at a fixed angle
despite high drive current from the ECM. The ECM will turn on the MIL and will set a DTC.
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.
MONITOR STRATEGY
Related DTCsP2111: Throttle actuator stuck open
P2112: Throttle actuator stuck closed
Required sensors/ components (Main)Throttle actuator
Required sensors/ components (Related)-
Frequency of operationContinuous
Duration0.5 sec.
MIL operationImmediate
Sequence of operationNone
05EVS-05

Page 1882 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual 05-248
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
438 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
TYPICAL ENABLING CONDITIONS
All:
The monitor will run whenever these DTCs are not presentSee page

Page 1883 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual - DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-249
439 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
3 CHECK DTC OUTPUT
(a) Clear the DTC (See page 05-38).
(b) Start the engine, and depress and relea

Page 1884 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual A85832
ETCSECM
+BM
M+
M-
ME01 From
Battery
Throttle ActuatorActuator Control
Circuit 05-250
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
440 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC P2118 T

Page 1885 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual - DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-251
441 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
FAIL-SAFE
If the ETCS has a malfunction, the ECM cuts off current to the throttle actuator. The th

Page 1886 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual A90304
6
E6+BM
M+
M-
GE01ECM
ME01 3
E9
2
E9
17
E9
4
E9 W
IC14
1Engine Room
R/B No. 2 2
T13
Throttle Actuator
B 2
F7
FL Block Assy
W-B
FL
Main
Battery
EF ETCS
W
12
1Shielded
2
W3R
WM+
M- 05-252
- DIAG

Page 1887 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual A92628ETCS FuseEngine Room R/B No. 2
A67446
+BM (+) ME01 (-)
E9
ECME6
ECM
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-253
443 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
HI

Page 1888 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual A80017
A67404A92627
ETCS Fuse
+BME6
ECM
Engine Room R/B No. 2 Wire Harness Side
A92628
ETCS FuseEngine Room R/B No. 2 Wire Harness Side
05-254
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
444 Author: Date:
2005

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