Throttle Position Sensor

Sticking throttle closed (lower than expected) / open (higher than expected) position (P0121)

If the PCM detects that the throttle opening angle - less than 12.5% within 5 seconds after the occurrence of the following conditions, the PCM determines that the throttle valve is locked in the closed position:

- Engine coolant temperature - above 80 ?� C;

- A signal of the pressure sensor in the intake manifold - more than 32.0 g / s;

- If the PCM detects that the throttle valve opening - more than 50% within 5 seconds after the occurrence of the following conditions, the PCM determines that the throttle valve is locked in the open position:

- Rotational speed of the engine - up to 500 min ^-1;

- A signal of the pressure sensor in the intake manifold - 0 g / s.

The low level of the input signal chain throttle position (P0122)

If the PCM detects a voltage of the throttle position sensor to terminal 2 A block of PCM - below 0.1 V after ignition, then the PCM determines that the TP circuit has malfunction.

The high level of the input signal chain throttle position (P0123)

If the PCM detects a voltage of the throttle position sensor to terminal 2 A block of PCM - above 4.9 V after ignition, then the PCM determines that the TP circuit has malfunction.

No response front sensor heated oxygen concentration in the enriched mixture (P0131)

The PCM monitors the input voltage of the oxygen concentration sensor front heated when the following conditions.

- Engine speed - higher than 1500 ^min -1;

- Engine coolant temperature - above 80 ?� C.

If the input voltage of the sensor below 0.45 V for 41.2 seconds, the PCM determines that the front sensor oxygen concentration is not switched.

No response front sensor heated oxygen concentration in the lean (P0132)

The PCM monitors the input voltage of the oxygen concentration sensor front heated when the following conditions.

- Engine speed - higher than 1500 ^min -1;

- Engine coolant temperature - above 80 ?� C.

If the input voltage of the sensor above 0.45 volts for 41.2 seconds, the PCM determines that the front sensor oxygen concentration is not switched.

Sensor Circuit Malfunction front heated oxygen concentration (P0133)

The PCM controls the period of the cycle inversion, switching time "rich-poor" and "rich-poor". The PCM calculates the average period of the cycle inversion, the average switching time "rich-poor" and "rich-poor", the following conditions:

- Motion mode 3;

- Design load 14,8-59,4% (at 2000 ^min-1.);

- Engine speed 1410-4000 ^min -1 (model with a manual transmission);

- Engine speed 1190-4000 ^min -1 (model with automatic transmission);

- Vehicle speed - above 3.76 km / h;

- The engine coolant temperature higher than 10 ?� C;

- Cycle inversion signal of the front sensor heated oxygen concentration - greater than 10 cycles.

If any of the computed values exceed the threshold, the PCM determines that the circuit has a malfunction.

No signal chain front sensor heated oxygen concentration (P0134)

The PCM monitors the input voltage of the oxygen concentration sensor front heated when the following conditions are met:

- Engine speed - higher than 1500 ^min -1.

- Engine coolant temperature - above 80 ?� C.

If the input voltage sensor never exceeds 0.55 V for 83.2 s, the PCM determines that sensor circuit is not activated.

The high level of the input signal chain rear oxygen concentration sensor heated (P0138)

The PCM monitors the input voltage of the rear oxygen concentration sensor is heated. If the input voltage adjustable oxygen concentration sensor heated - above 0.45 V for 6.4 s after the fuel cut, the PCM determines that the input level is too high.

No signal chain rear oxygen concentration sensor heated (P0140)

The PCM controls the output voltage of the rear oxygen concentration sensor heating, when the following conditions are met:

- Engine speed - higher than 1500 ^min -1.

- Engine coolant temperature - up to 80 ?� C

If the input voltage from the sensor is less than 0.55 V for 30.4 s, the PCM determines that sensor circuit is not activated