Toyota 2GR-FE Manual page 320

ES–164
DTC No.
P0222
P0223
P2135
HINT:
• When any of these DTCs are set, check the throttle valve opening angle by entering the following
ES
menus on an intelligent tester: DIAGNOSIS / ENHANCED OBD ll / DATA LIST / ETCS / THROTTLE
POS AND THROTTLE POS #2.
• THROTTLE POS denotes the VTA1 signal (expressed in percentages), and THROTTLE POS #2
denotes the VTA2 signal (expressed in voltages).
Reference (Normal Condition):
Tester Display
THROTTLE POS
THROTTLE POS #2
MONITOR DESCRIPTION
The ECM uses the Throttle Position (TP) sensor to monitor the throttle valve opening angle. There are
several checks that the ECM performs to confirm the proper operation of the TP sensor.
• A specific voltage difference is expected between the sensor terminals, VTA1 and VTA2, for each
throttle valve opening angle. If the difference between VTA1 and VTA2 is incorrect, the ECM interprets
this as a malfunction in the sensor, and sets a DTC.
• VTA1 and VTA2 each have a specific voltage range. If VTA1 or VTA2 is outside the normal operating
range, the ECM interprets this as a malfunction in the sensor, and sets a DTC.
• VTA1 and VTA2 should never be close to the same voltage level. If VTA1 is within 0.02 V of VTA2, the
ECM determines that there is a short circuit in the sensor, and sets a DTC.
MONITOR STRATEGY
Related DTCs
Required Sensors/Components (Main)
Required Sensors/Components (Sub)
Frequency of Operation
2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
DTC Detection Condition
Output voltage of VTA2 is 1.75 V or less for 2 seconds
(1 trip detection logic)
Output voltage of VTA2 is 4.8 V or more, and VTA1 is
between 0.2 V and 2.02 V, for 2 seconds (1 trip
detection logic)
Either condition (a) or (b) is met (1 trip detection logic):
(a) Difference between output voltages of VTA1 and
VTA2 is 0.02 V or less for 0.5 seconds or more
(b) Output voltage of VTA1 is 0.2 V or less, and VTA2
is 1.75 V or less, for 0.4 seconds or more
Accelerator Pedal Fully Released
• TP sensor (built into throttle body)
• Short in VTA2 circuit
• Open in VC circuit
• ECM
• TP sensor (built into throttle body)
• Open in VTA2 circuit
• Open in E2 circuit
• Short between VC and VTA2 circuits
• ECM
• Short between VTA1 and VTA2 circuits
• TP sensor (built into throttle body)
• ECM
10 to 24 %
2.1 to 3.1 V
P0120: Throttle position sensor 1 range check (Fluctuating)
P0122: Throttle position sensor 1 range check (Low voltage)
P0123: Throttle position sensor 1 range check (High voltage)
P0220: Throttle position sensor 2 range check (Fluctuating)
P0222: Throttle position sensor 2 range check (Low voltage)
P0223: Throttle position sensor 2 range check (High voltage)
P2135: Throttle position sensor range check (Correlation)
Throttle position sensor
-
Continuous
Trouble Area
Accelerator Pedal Fully Depressed
64 to 96 %
4.5 to 5.0 V