1998 TOYOTA LAND CRUISER Factory Repair Manual

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Page 1361 of 3115

TOYOTA LAND CRUISER 1998 Factory Repair Manual A19973
ECM
+BM
E86
BatteryIG1 ETCS
1B 1Engine Room J/B
Id3 2
2
F15
FL BlockY-B Y-B Y-B1 2
1C
MAIN
B-G DI-312
- DIAGNOSTICSENGINE
505 Author: Date:
2004 LAND CRUISER (RM1071U)
WIRING DIAGRAM

Page 1362 of 3115

TOYOTA LAND CRUISER 1998 Factory Repair Manual A19977
Engine Room J/B
ETCS
A19521A19629
+BM(+)
E7
E8
E1 (-)
ECM Connector
- DIAGNOSTICSENGINE
DI-313
506 Author: Date:
2004 LAND CRUISER (RM1071U)
INSPECTION PROCEDURE
HINT:
Read freeze frame dat

Page 1363 of 3115

TOYOTA LAND CRUISER 1998 Factory Repair Manual A21035
E8
+BM
ECM Connector
A19977
Engine Room J/B
ETCS Fuse
DI-314
- DIAGNOSTICSENGINE
507 Author: Date:
2004 LAND CRUISER (RM1071U)
3 Check for open or short in harness or connector between batt

Page 1364 of 3115

TOYOTA LAND CRUISER 1998 Factory Repair Manual - DIAGNOSTICSENGINE
DI-315
508 Author: Date:
2004 LAND CRUISER (RM1071U)
DTC P2119 Throttle Actuator Control Throttle Body
Range/Performance
CIRCUIT DESCRIPTION
The Electric Throttle Control Syste

- DIAGNOSTICSENGINE
DI-315
508 Author: Date:
2004 LAND CRUISER (RM1071U)
DTC P2119 Throttle Actuator Control Throttle Body
Range/Performance
CIRCUIT DESCRIPTION
The Electric Throttle Control System (ETCS) is composed of a throttle motor that operates the throttle valve,
a throttle position sensor that detects the opening angle of the throttle valve, an accelerator pedal position
sensor that detects the accelerator pedal position, and the ECM that controls the ETCS system.
The ECM operates the throttle motor to position the throttle valve for proper response to driver inputs. The
throttle position sensor, mounted on the throttle body, detects the opening angle of the throttle valve and
provides this signal to the ECM so that the ECM can regulate the throttle motor.
DTC No.DTC Detection ConditionTrouble Area
P2119Throttle opening angle continues to vary greatly from target
throttle opening angleElectric throttle control system
Throttle body
MONITOR DESCRIPTION
The ECM determines the ºactualº throttle angle based on the throttle position sensor signal. The ºactualº
throttle position is compared to the ºtargetº throttle position commanded by the ECM. If the difference of
these two values exceeds a specified limit, the ECM interprets this as a fault in the ETCS (Electronic Throttle
Control System). The ECM turns on the MIL and a DTC is set.
FAIL SAFE
If the ETCS (Electronic Throttle Control System) has a malfunction, the ECM cuts off current to the throttle
control motor. 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 infection (inter-
mittent fuel-cut) and ignition timing in accordance with the accelerator pedal opening angle to enable the
vehicle to continue at a minimum 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 DTCsP2119Electronic throttle control system failure
Rid / tMain sensorsThrottle actuator motorRequired sensors/componentsRelated sensorsThrottle position sensor
Frequency of operationContinuous
Duration1 sec.
MIL operationImmediate
Sequence of operationNone
TYPICAL ENABLING CONDITIONS
The monitor will run whenever the follow-
ing DTCs are not presentSee ºList of disable a monitorº (on page DI-3)
The typical enabling condition is not avail-
able-
DIC2R-01

Page 1365 of 3115

TOYOTA LAND CRUISER 1998 Factory Repair Manual DI-316
- DIAGNOSTICSENGINE
509 Author: Date:
2004 LAND CRUISER (RM1071U)
TYPICAL MALFUNCTION THRESHOLDS
Detection CriteriaThreshold
Difference between ºtarget throttle positionº and ºactual
thr

Page 1366 of 3115

TOYOTA LAND CRUISER 1998 Factory Repair Manual A21034
T16
Component Side:
M+M- Throttle Control Motor and Sensor
- DIAGNOSTICSENGINE
DI-317
510 Author: Date:
2004 LAND CRUISER (RM1071U)
2 Check throttle control motor.
PREPARATION:
Disconnect

Page 1367 of 3115

TOYOTA LAND CRUISER 1998 Factory Repair Manual DI-318
- DIAGNOSTICSENGINE
511 Author: Date:
2004 LAND CRUISER (RM1071U)
DTC P2120 Throttle/Pedal Position Sensor/Switch ºDº
Circuit
DTC P2122 Throttle/Pedal Position Sensor/Switch ºDº
Circuit

Page 1368 of 3115

TOYOTA LAND CRUISER 1998 Factory Repair Manual A19694A19803
5
3.7 to 4.4
2.9 to 3.6
1.6
1.4
025 IC No. 1
IC No. 2
Accelerator Pedal
Position SensorECM
VPA
EPA
VCPA
VPA2
EPA2
VCP2Usable Range
Magnet
Magnet
Accelerator Pedal Position Sensor Output V

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