Monitor Description
This monitor will run when the engine is started at -10 to 50°C (14 to 122°F) of the engine coolant temperature. The DTC will be set after the engine has been idling for 13 seconds (2 trip detection logic).
The DTC is designed to monitor the idle air control at cold start. When the engine is started at a temperature lower than 50°C (122°F) of the engine coolant temperature, the ECM measures the accumulated mass air flow when the engine is idling. If it does not reach the criteria within 10 seconds, the ECM interprets this as a malfunction. The MIL is illuminated and a DTC is set when the malfunction is detected in consecutive driving cycles (2 trip detection logic).
The electronic throttle control system controls the idle speed. The electronic throttle control system operates the throttle actuator to open and close the throttle valve, and adjusts the intake air amount to achieve the target idle speed.
When the negative battery terminal is disconnected during inspection or repairs, the idle speed control learned values are cleared. idle speed control learning is performed when the engine has been warmed up and idled for 5 minutes because this DTC cannot be set after the idle speed control learned values are cleared.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P050A | Insufficient mass air flow after a cold start (2 trip detection logic) |
|