Toyota Corolla (E120): Idle air control System/ Circuit

Dtc p0505 idle air control system

Dtc p0511 idle air control circuit

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Circuit description
Refer to dtc p0120 Dtc no. Dtc detection condition Trouble area P0121 The following condition is met 4 times. After the vehicle speed has exceeded 19 mph (30 km/h) once, the throttle position sensor output value is out of normal range when the throttle ...

Inspection procedure
1 Inspect shift solenoid valve(s1) Remove the shift solenoid valve s1. measure the resistance according to the value(s) in the table below. Standard: Connect the positive (+) battery lead to the solenoid connector terminal, and the negative (–) battery lead to the solenoid ...

Inspection procedure
Hint: when the throttle position is slightly opened (the accelerator pedal is slightly depressed) because a floor carpet is overlapped on the accelerator pedal, or if not fully releasing the accelerator pedal, etc., Dtc p505 will possibly be detected. Read freeze frame data using the ...