CIRCUIT OPERATION
Controls the current that is applied from the ECM terminals ETV+, ETV- to the throttle actuator control motor.
TECHNICAL DESCRIPTION
ECM varies the direction and the amperage of the current that is applied to the throttle actuator control motor in order to control the opening of the throttle valve.
DESCRIPTIONS OF MONITOR METHODS
The voltage difference between the throttle position sensor output voltage and the throttle position sensor output at the throttle actuator control motor relay off is smaller than the specified value.
MONITOR EXECUTION CONDITIONS (Other monitor and Sensor)
Other Monitor (There is no temporary DTC set in memory for the item monitored below)
Sensor (The sensor below is determined to be normal)
DTC SET CONDITIONS
Check Conditions
- Battery positive voltage is higher than 8.3 volts.
- The target throttle position sensor (main) voltage subtracted from the throttle position sensor (main) output voltage is more than 0.1 volt.
- The target throttle position sensor (sub) voltage subtracted from the throttle position sensor (sub) output voltage is more than 0.1 volt.
- The drive duty of the throttle actuator control motor is 100 percent or more.
- Except while during cranking.
or
- Battery positive voltage is higher than 8.3 volts.
- The throttle position sensor (main) output voltage subtracted from the target throttle position sensor (main) voltage is more than 0.1 volt.
- The throttle position sensor (sub) output voltage subtracted from the target throttle position sensor (sub) voltage is more than 0.1 volt.
- The drive duty of the throttle actuator control motor is 100 percent or more.
- Except while during cranking.
Judgment Criterion
- For 0.4 second, the difference between the output voltage of throttle position sensor (main) and the learning value of the middle-opened degree is less than 0.2 volt.
or
- For 0.4 second, the difference between the output voltage of throttle position sensor (sub) and the learning value of the middle-opened degree is less than 0.2 volt.
FAIL-SAFE AND BACKUP FUNCTION
- Throttle opening degree position is in default position.
OBD-II DRIVE CYCLE PATTERN
- Refer to Diagnostic Function - OBD-II Drive Cycle - Pattern 1 .
TROUBLESHOOTING HINTS (The most likely causes for this code to be set are: )
- Throttle actuator control motor failed.
- Open throttle actuator control motor circuit, harness damage or connector damage.
- ECM failed.