Toyota 1 MZ–FE Manual page 472

EG2–472
DTC P0121 Throttle Position Circuit Range Performance
Problem
CIRCUIT DESCRIPTION
Refer to throttle position circuit malfunction on page EG2–463.
Diagnostic Trouble Code Detecting Condition
DTC No.
When closed throttle position switch is ON,
condition a) continues.
P0121
(2 trip detection logic)
a ) VTA ) 2.0 V
DIAGNOSTIC CHART
Are there any other codes (besides DTC P0121)
being output?
Replace throttle position sensor.
1MZ–FE ENGINE – CIRCUIT INSPECTION
YES
Trouble Area
Throttle position sensor.
Go to relevant diagnostic trouble code
chart.