Mazda 6 Workshop Manual page 35

coolant temperature sensor circuit.
P0122 Accelerator pedal position (APP) sensor No.1 circuit low input
• The PCM monitors the input signal from accelerator pedal position sensor No.1. If the voltage from accelerator
pedal position sensor No.1 is less than 0.3 V, the PCM determines that there is a malfunction in the
accelerator pedal position sensor No.1 circuit.
P0123 Accelerator pedal position (APP) sensor No.1 circuit high input
• The PCM monitors the input signal from accelerator pedal position sensor No.1. If the voltage from accelerator
pedal position sensor No.1 is more than 4.7 V, the PCM determines that there is a malfunction in the
accelerator pedal position sensor No.1 circuit.
P0182 Fuel temperature sensor circuit low input
• The PCM monitors the input signal from the fuel temperature sensor. If the voltage from the fuel temperature
sensor is less than 0.14 V, the PCM determines that there is a malfunction in the fuel temperature sensor
circuit.
P0183 Fuel temperature sensor circuit high input
• The PCM monitors the input signal from the fuel temperature sensor. If the voltage from the fuel temperature
sensor is more than 4.92 V, the PCM determines that there is a malfunction in the fuel temperature sensor
circuit.
P0191 Fuel pressure sensor range/performance problem
• The PCM monitors the fuel pressure in the common rail and input signal from the fuel pressure sensor while
the engine is running. If any one of the following conditions is met, the PCM determines that there is
malfunction in the fuel pressure sensor range/performance problem.
— The PCM calculates the difference between the actual fuel pressure and the target fuel pressure. If the
pressure difference more than 2 MPa {20 kgf/cm
malfunction in fuel pressure sensor range/performance problem.
— The PCM monitors the input signal from fuel pressure sensor. If the difference between the maximum and
minimum value of the fuel pressure sensor is less than 0.015 V, the PCM determines that there is a
malfunction in fuel pressure sensor range/performance problem.
P0192 Fuel pressure sensor circuit low input
• PCM monitors input voltage from fuel pressure sensor while engine is running. If input voltage from fuel
pressure sensor is less than 0.4 V, PCM determines fuel pressure sensor circuit low input.
P0193 Fuel pressure sensor circuit high input
• PCM monitors input voltage from fuel pressure sensor while engine is running. If input voltage from fuel
pressure sensor is more than 4.86 V, PCM determines fuel pressure sensor circuit high input.
P0200 Fuel injector operation identified
• The PCM monitors each cylinder injection confirmation signal from the IDM while the engine is running. If the
PCM does not receive the injection confirmation signal for unspecified cylinder normally, the PCM determines
that the unspecified cylinder fuel injector operation is not verified.
P0201 Fuel injector No.1 operation identified
• The PCM monitors each cylinder injection confirmation signal from the IDM while the engine is running. If the
PCM does not receive the injection confirmation signal for No.1 cylinder normally, PCM determines that the fuel
injector No.1 operation is not verified.
P0202 Fuel injector No.2 operation identified
• The PCM monitors each cylinder injection confirmation signal from the IDM while the engine is running. If the
PCM does not receive the injection confirmation signal for No.2 cylinder normally, the PCM determines that the
fuel injector No.2 operation is not verified.
P0203 Fuel injector No.3 operation identified
• The PCM monitors each cylinder's injection confirmation signal from the IDM while the engine is running. If the
PCM does not receive the injection confirmation signal for No.3 cylinder normally, the PCM determines that the
fuel injector No.3 operation is not verified.
P0204 Fuel injector No.4 operation identified
• The PCM monitors each cylinder injection confirmation signal from the IDM while the engine is running. If the
PCM does not receive the injection confirmation signal for No.4 cylinder normally, the PCM determines that the
fuel injector No.4 operation is not verified.
P0222 Accelerator pedal position (APP) sensor No.2 circuit low input
• The PCM monitors the input signal from accelerator pedal position sensor No.2. If the voltage from accelerator
pedal position sensor No.2 is less than 0.3 V, the PCM determines that there is a malfunction in the
accelerator pedal position sensor No.2 circuit.
P0223 Accelerator pedal position (APP) sensor No.2 circuit high input
• The PCM monitors the input signal from accelerator pedal position sensor No.2. If the voltage from accelerator
pedal position sensor No.2 is more than 4.7 V, the PCM determines that there is a malfunction in the
accelerator pedal position sensor No.2 circuit.
P0225 Idle switch circuit malfunction
• The PCM monitors the input signals from the accelerator pedal position sensor and the idle switch. If the idle
switch is off even if the voltage from the accelerator pedal position sensor No.2 is less than 0.75 V, the PCM
determines that there is a malfunction in the idle switch circuit.
ON-BOARD DIAGNOSTIC
2
, 290 psi}, the PCM determines that there is a
F2
F2–23