To Next Page

To Previous Page

DTC 41 Throttle Position Sensor Circuit

CIRCUIT DESCRIPTION

ÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑ

ÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑ

ÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑ

The throttle position sensor is mounted in the

throttle body and detects the throttle valve opening

angle. When the throttle valve is fully closed, the

IDL contacts in the throttle position sensor are on,

so the voltage at the terminal IDL of the ECM be-

come 0 V. At this time, a voltage of approximately

0.7 is applied to the terminal VTA of the ECM. When

the throttle valve is opened, the IDL contacts go off

and thus the power source voltage of approximately

12 V in the ECM is applied to the terminal VTA of

the ECM increases in proportion to the opening

angle of the throttle valve and becomes approxi-

mately 3.5 0 5.0 V when the throttle valve is fully

opened. The ECM judges the vehicle driving condi-

tions from these signals input from the terminals

VTA and IDL, and uses them as one of the condi-

tions for deciding the air–fuel ratio correction, power

increase correction and fuel–cut control etc.

ÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑ

ÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑ

ÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑ

Text

Code No. Diagnostic Trouble Code Detecting Condition Trouble Area

Open or short in throttle position sensor circuit (VTA)

for 0.5 sec. or more.

Open or short in throttle position sensor circuit

Throttle position sensor

ECM

HINT: When the connector for the throttle position sensor is disconnected, diagnostic trouble code 41 is not dis-

played, Diagnostic trouble code 41 is displayed only when there is an open or short in the VTA signal circuit

of the throttle position sensor.

EG–392

–ENGINE TROUBLESHOOTING CIRCUIT INSPECTION

Toyota 3VZ–FE User Manual

Questions and Answers: