Detection Condition
WARNING: This page is about a different car, the 2003 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
If PCM detects failure to turn off the ET control relay (fail safe mode), PCM determines throttle actuator control system has a malfunction.
- Accelerator Pedal Position (APP) sensor No. 1 output voltage is 1.19 volts or less, or 4.3 volts or more
- Actual throttle opening angle is too large as compared to target opening angle (open too much)
- APP sensor No. 1 signal value and APP sensor No. 2 signal value correlation is out of specification
- APP sensor No. 2 output voltage is 0.54 volt or less, or 3.8 volts or more
- Difference exists in APP sensor No. 1 or No. 2 voltage between PCM main CPU and sub-CPU
- Difference in default throttle opening angle from fully closed throttle angle detected by TP sensor No. 1 is 1.5 times larger or more than that of No. 2
- During dash pot correction, a difference exists between actual and target throttle valve opening angles
- During normal driving, a difference exists between actual and target throttle valve opening angles
- Fully closed throttle angle detected by each TP sensor No. 1 and No. 2 is one degree or larger than default throttle opening angle
- PCM detects actual throttle opening angle is larger than target throttle opening angle by 2.5 degrees or more during closing throttle valve.
- PCM detects actual throttle opening angle is smaller than target throttle opening angle by 2.5 degrees or more during closing throttle valve
- PCM detects internal failure or an abnormal output signal for throttle actuator control system
- PCM detects large voltage differences from ET control relay and main relay
- PCM detects throttle opening angle signal voltage is higher than default throttle opening angle voltage after ignition is turned to off
- Target throttle opening angle is too large as compared to actual opening angle (closed too much)
- Throttle actuator motor current is less than threshold current
- TP sensor No. 1 output voltage is 0.255 volt or less, or 4.72 volts or more
- TP sensor No. 1 signal value and TP sensor No. 2 signal value correlation is out of specification
- TP sensor No. 2 output voltage is 0.255 volt or less, or 4.72 volts or more
- Voltage from ET control relay is too low or too high
- When idling, a difference exists between actual and target idling speeds