Mazda 2002 Millenia Spezifikationen PDF herunterladen (Seite 107)

F46

ON-BOARD DIAGNOSTIC

Throttle Position (TP) Sensor

Throttle position stuck closed (lower than expected)/open (higher than expected) (P0121)

• If the PCM detects that throttle valve opening angle is below 12.5% for 5 s after following conditions are met,

the PCM determines that TP is stuck closed:

 Engine coolant temperature above 80 °

°°

°C {176 °

°°

°F}

 MAF sensor signal above 32.0 g/s {4.2 lb/minutes}

• If the PCM detects that throttle valve opening angle is above 50% for 5 seconds after following conditions are

met, the PCM determines that TP is stuck open:

 Engine speed above 500 rpm

 MAF sensor signal 0 g/s {0.7 lb/min.}

TP circuit low input (P0122)

• If the PCM detects TP sensor voltage at the PCM terminal 2A is below 0.1 V after ignition key is turned to on,

the PCM determines that TP circuit has a malfunction.

TP circuit high input (P0123)

• If the PCM detects TP sensor voltage at the PCM terminal 2A is above 4.9 V after ignition key is turned to on,

the PCM determines that TP circuit has a malfunction.

Front Heated Oxygen Sensor (HO2S)

Front HO2S stuck low (P0131)

• The PCM monitors input voltage from the front HO2S when the following conditions are met. If input voltage

from the sensor remains below 0.45 V for 41.2 s, the PCM determines that there is no front HO2S inversion.

 Engine speed is above 1,500 rpm.

 Engine coolant temperature is above 80 °

°°

°C {176°

°°

°F}.

Front HO2S stuck high (P0132)

• The PCM monitors input voltage from the front HO2S when the following conditions are met. If input voltage

from the sensor remains above 0.45 V for 41.2 s, the PCM determines that there is no front HO2S inversion.

 Engine speed is above 1,500 rpm.

 Engine coolant temperature is above 80 °

°°

°C {178 °

°°

°F}.

Front HO2S circuit malfunction (P0133)

• The PCM monitors inversion cycle period, lean-to-rich response time and rich-to-lean response time of the

sensor. The PCM calculates the average of the inversion cycle period-specified inversion cycles, average

response time from lean-to-rich, and from rich-to-lean when following conditions are met. If any exceeds

threshold, the PCM determines that circuit has a malfunction.

 Drive mode 3

 Following conditions are met:

• Calculation load 14.859.4% (at 2,000 rpm.)

• Engine speed 1,4104,000 rpm (MTX)

• Engine speed 1,1904,000 rpm (ATX)

• Vehicle speed is above 3.76 km/h

• Engine coolant temperature is above -10 °

°°

°C {14 °

°°

°F}

• Front HO2S signal inversion cycle is above 10 cycles

Front HO2S circuit no activity detected (P0134)

• The PCM monitors input voltage from the front HO2S when the following conditions are met. If input voltage

from sensor never exceed 0.55 V for 83.2 s, the PCM determines that sensor circuit is not activated.

 Engine speed is above 1,500 rpm.

 Engine coolant temperature is above 80 °

°°

°C {176 °

°°

°F}.

Rear Heated Oxygen Sensor (HO2S)

Rear HO2S circuit high input (P0138)

• The PCM monitors input voltage from the rear HO2S. If input voltage from the rear HO2S sensor is above 0.45

V for 6.4 s during deceleration fuel cut, the PCM determines that the circuit input is high.

Rear HO2S circuit no activity detected (P0140)

• The PCM monitors input voltage from the rear HO2S when the following conditions are met. If input voltage

from sensor never exceed 0.55 V for 30.4 s, the PCM determines that sensor circuit is not activated.

 Engine speed is above 1,500 rpm.

 Engine coolant temperature is above 80 °

°°

°C {176 °

°°

°F}.

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