Throttle Position Sensor Signal - Toyota 2VZ-FE Manual

Diag. Code
CIRCUIT DESCRIPTION
The throttle position sensor is provided to the throttle body and detects the opening angle of the
throttle valve.
The ECU judges the vehicle driving conditions from the signals input from the terminal VTA of the
throttle position sensor.
Code No.
Open or short circuit in throttle position
sensor signal (VTA).
41 41
IDL contact is ON and VTA output
exceeds 1.45 V.
HINT: When the connector for the throttle position sensor is disconnected, diagnostic code 41 is not
output. Diagnostic code 41 is output only when there is an open or short in the VTA signal circuit of
the throttle position sensor.
DIAGNOSTIC CHART
Check voltage between terminals VC and
E2 of throttle position sensor connector.
Check throttle position sensor.
Check voltage between terminals VTA and
E2 of ECU connector.
Replace ECU. *
Replace ECU. *
Check voltage between terminal VC of
Check voltage between terminal VC of
throttle position sensor connector and body
throttle position sensor connector and body
ground.
ground.
Check voltage between terminals VC and
Check voltage between terminals VC and
E2 of ECU connector.
E2 of ECU connector.
Check for short circuit between ECU and
Check for short circuit between ECU and
throttle position sensor.
throttle position sensor.
Repair or relace harness or connector.
Repair or relace harness or connector.
ENGINE TROUBLESHOOTING
41

Throttle Position Sensor Signal

Diagnosis
– Circuit Inspection
Trouble Area
· Open or short in throttle position sensor cir-
cuit.
· Throttle position sensor
· ECU
Adjust or replace throttle position
sensor.
Check harness and connector
Check harness and connector
between ECU and throttle
between ECU and throttle
position sensor.
position sensor.
* When diag. code 41 is not
* When diag. code 41 is not
displayed, proceed to next circuit
displayed, proceed to next circuit
inspection shown on matrix chart
inspection shown on matrix chart
(See page TR–21).
(See page TR–21).
Check harness and connector
Check harness and connector
between ECU and throttle
between ECU and throttle
position sensor.
position sensor.
Check for open circuit between
Check for open circuit between
ECU and throttle position sensor.
ECU and throttle position sensor.
Replace ECU.
Replace ECU.
TR–63