Dtc Detection Logic And Conditions [Lf] - Mazda 2006 MX-5 Service Highlights

DTC DETECTION LOGIC AND CONDITIONS [LF]

B1342 PCM malfunction
• Malfunction in the PCM internal circuit.
P0011 CMP Timing over-advanced
• The actual valve timing is over-advanced by 15 ° from the target valve timing for specified period when the oil
control valve (OCV) is controlled in the maximum valve timing retard condition.
Monitoring condition
— Engine coolant temperature is above 63 °C {145.4 °F}
P0012 CMP timing over-retarded
• Actual valve timing is over-retarded by 10 ° from the target valve timing for specified period when the oil control
valve (OCV) system control is within the feedback range.
Monitoring condition
— Engine coolant temperature is above 63 °C {145.4 °F}
P0016 CKP-CMP correlation
• The PCM monitors the input pulses from the CKP sensor and CMP sensor. If the input pulse pick-up timing do
not match each other, the PCM determines that the camshaft position does not coincide with the crankshaft
position.
P0030 Front HO2S heater control circuit problem
• The PCM monitors the front HO2S impedance when under the front HO2S heater control for 200 s. If the
impedance is more than 44 ohms, the PCM determines that there is a front HO2S heater control circuit
problem.
P0031 Front HO2S heater circuit low input
• The PCM monitors the front HO2S heater control voltage when the PCM turns the front HO2S heater off. If the
control voltage exceeds 50% of the battery voltage, the PCM determines that the front HO2S heater control
circuit voltage is low.
P0032 Front HO2S heater circuit high input
• The PCM monitors the front HO2S heater control voltage when the PCM turns the front HO2S heater on. If the
control voltage is less than 50% of the battery voltage, the PCM determines that the front HO2S heater control
circuit voltage is high.
P0037 Rear HO2S heater circuit low input
• The PCM monitors the rear HO2S heater control voltage when the PCM turns the rear HO2S heater off. If the
control voltage exceeds 25% of the battery voltage, the PCM determines that the rear HO2S heater control
circuit voltage is low.
P0038 Rear HO2S heater circuit high input
• The PCM monitors the rear HO2S heater control voltage when the PCM turns the rear HO2S heater on. If the
control voltage is less than 57% of the battery voltage, the PCM determines that the rear HO2S heater control
circuit voltage is high.
P0069 Manifold absolute pressure/atmospheric pressure correlation
• PCM monitors differences between intake manifold vacuum and atmospheric pressure. If the difference is
below –12 kPa {–90 mmHg, –3.5 inHg} or above 12 kPa {90 mmHg, 3.5 inHg} when the following conditions
are met, the PCM determines that there is a MAP sensor performance problem.
MONITORING CONDITION
— 12—15 s from when ignition switch is turned off.
— Intake air temperature is above -10°C {14°F}.
— Engine coolant temperature is above 70°C {158°F}.
P0101 MAF sensor circuit range/performance problem
• PCM monitors mass intake air flow amount when the engine is running.
— If the mass intake air flow amount is above 37 l/s for 5 s and the engine speed is below 2,000 rpm with the
engine running, the PCM determines that the detected mass intake air flow amount is too high.
— If the mass intake air flow amount is below 4.4—59 l/s (The value depends on engine speed.) for 5 s and
the engine speed is above 1,000 rpm with the engine running and the throttle opening angle above 50 %,
the PCM determines that detected the mass intake air flow amount is too low.
P0102 MAF sensor circuit low input
• The PCM monitors input voltage from the MAF sensor when the engine running. If the input voltage is below
0.21 V, the PCM determines that the MAF circuit has a malfunction.
P0103 MAF sensor circuit high input
• The PCM monitors the input voltage from the MAF sensor when the engine running. If the input voltage is
above 4.92 V, the PCM determines that the MAF circuit has a malfunction.
P0107 MAP sensor circuit low input
• The PCM monitors the input voltage from the MAP sensor when intake air temperature is above –10 °C {14
°F}. If the input voltage is below 0.1 V, the PCM determines that the MAP sensor circuit has a malfunction.
MONITORING CONDITIONS
— Calculated load: 13—32 %
ON-BOARD DIAGNOSTIC
E5U010200000N03
01–02
01–02–11