ES–170
2GR-FE ENGINE CONTROL SYSTEM
– SFI SYSTEM
ES
HINT:
This DTC relates to the Throttle Position (TP) sensor.
MONITOR DESCRIPTION
The ECM uses the TP sensor to monitor the throttle valve opening angle.
This sensor transmits two signals: VTA1 and VTA2. VTA1 is used to detect the throttle opening angle and
VTA2 is used to detect malfunctions in VTA1. The ECM performs several checks to confirm the proper
operation of the TP sensor and VTA1.
DTC No.
DTC Detection Condition
Trouble Area
P0121
Difference between VTA1 and VTA2 voltages less than
0.8 V, or more than 1.6 V for 2 seconds (1 trip detection
logic)
TP sensor (built into throttle body)
Throttle Valve Opening Angle (degrees)
Throttle Position
Sensor
Magnet
Magnet
IC No. 1
IC No. 2
ECM
2.55
5.0
2.25
0.93
0.69
VC
E2
VTA1
VTA1
VTA2
VTA2
Sensor Output Voltage (V)
Fail Safe Angle
Usable Range
0°
6°
84°
Note:
The throttle valve opening angle detected by the sensor terminal
VTA1 is expressed as percentages.
Between 10 % and 24 %: Throttle valve fully closed
Between 64 % and 96 %: Throttle valve fully open
Approximately 19 %: Fail-safe angle (6°)
A019802E31
Summary of Contents for 2GR-FE
Page 176: ...ES 20 2GR FE ENGINE CONTROL SYSTEM SFI SYSTEM ES NEXT 20 CONDUCT CONFIRMATION TEST END ...
Page 247: ...2GR FE ENGINE CONTROL SYSTEM SFI SYSTEM ES 91 ES OK REPLACE ECM See page ES 518 ...
Page 412: ...ES 256 2GR FE ENGINE CONTROL SYSTEM SFI SYSTEM ES A END ...
Page 447: ...2GR FE ENGINE CONTROL SYSTEM SFI SYSTEM ES 291 ES OK REPLACE ECM See page ES 518 ...
Page 556: ...ES 400 2GR FE ENGINE CONTROL SYSTEM SFI SYSTEM ES A REPLACE TCM ...
Page 630: ...ES 474 2GR FE ENGINE CONTROL SYSTEM SFI SYSTEM ES OK REPLACE ECM See page ES 518 ...
Page 658: ...2GR FE ENGINE CONTROL SYSTEM VVT SENSOR ES 493 ES 22 INSTALL ENGINE UNDER COVER LH ...
Page 897: ...2GR FE STARTING SMART KEY SYSTEM ST 35 ST OK REPLACE MAIN BODY ECU ...
Page 923: ...2GR FE STARTING SMART KEY SYSTEM ST 61 ST OK REPLACE MAIN BODY ECU ...
Page 935: ...2GR FE STARTING SMART KEY SYSTEM ST 73 ST OK REPLACE MAIN BODY ECU ...
Page 940: ...ST 78 2GR FE STARTING SMART KEY SYSTEM ST OK REPLACE MAIN BODY ECU ...
Page 958: ...ST 96 2GR FE STARTING SMART KEY SYSTEM ST OK END MAIN BODY ECU DEFECTIVE ...