–
DIAGNOSTICS
ENGINE (5VZ–FE)
DI–265
527
Author:
Date:
2003 TOYOTA TACOMA (RM1002U)
DTC
P0120
Throttle Pedal Position Sensor/Switch ”A”
Circuit (w/ ETCS)
DTC
P0122
Throttle Pedal Position Sensor/Switch ”A”
Circuit Low Input (w/ ETCS)
DTC
P0123
Throttle Pedal Position Sensor/Switch ”A”
Circuit High Input (w/ ETCS)
DTC
P0220
Throttle/Pedal Position Sensor/Switch ”B”
Circuit (w/ ETCS)
DTC
P0222
Throttle Pedal Position Sensor/Switch ”B”
Circuit Low Input (w/ ETCS)
DTC
P0223
Throttle Pedal Position Sensor/Switch ”B”
Circuit High Input (w/ ETCS)
DTC
P2135
Throttle/Pedal Position Sensor/Switch
”A”/”B” Voltage Correction (w/ ETCS)
DIB1Q–01
A02396
A02395
A02624
Throttle Position Sensor Output Voltage (V)0
1.5
Throttle Valve Opening Angle (deg)
70
125
VTA
VTA2
5
VTA2 VTA
E2
VC
Movable Range
Usable Range
Usable Range
*1
*2
*1
*2
Movable Range
Usable
Range
*2
*1
Accelerator pedal
released (15°)
Accelerator pedal
depressed (about
100°)
*2:
*1:
DI–266
–
DIAGNOSTICS
ENGINE (5VZ–FE)
528
Author:
Date:
2003 TOYOTA TACOMA (RM1002U)
CIRCUIT DESCRIPTION
HINT:
This is the procedure of throttle position sensor (w/ ETCS).
The throttle position sensor is mounted on the throttle body and it have 2 sensors to detect the throttle open-
ing angle and a malfunction of the throttle position sensor.
The voltage applied to the terminals VTA and VTA2 of the ECM changes between 0 V and 5 V in proportion
to the opening angle of the throttle valve. The VTA is a signal to indicate the actual throttle valve opening
angle which is used for the engine control, and the VTA2 is a signal to indicate the information about the
opening angle which is used for detecting a malfunction.
The ECM judges the current opening angle of the throttle valve from these signals input from terminals VTA
and VTA2, and the ECM controls the throttle motor to make the throttle valve angle properly in response to
the driving condition.
If this DTC is stored, the ECM shuts down the power for the throttle motor and the electromagnetic clutch,
and the throttle valve is full