Throttle Actuator Control Monitor - P1224, P1229

Throttle actuator control monitor - P1224, P1229

Throttle Control OBDII position error
During ignition on conditions the calculated target throttle voltage is compared to the actual throttle position sensor voltage. If the voltage of the target and actual throttle signal differ by more than a calibratable amount for more than a calibratable period a failure judgement is made.

Throttle Control OBDII circuit malfunction
During ignition on conditions the throttle motor current signal is monitored by hardware. If over-current is detected for more than a calibratable period a failure judgement is made. During ignition on conditions throttle motor current is monitored by software. If the throttle motor current is more than a calibration level for more than a calibratable period a failure judgement is made. During ignition on conditions the PWM throttle motor duty is monitored. If 100% duty is detected for more than a calibratable period a failure judgement is made.