Toyota Corolla (E120): Idle signal circuit

Dtc 51 idle signal circuit

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Terminals of ecu
Oscilloscope wave (*1) Hint: terminal: od – gnd gauge set: 5 v / div, 50 ms / div condition: during cruise control driving o/d switch on. ...

Circuit description
The intake air temperature (iat) sensor, mounted on the mass air flow (maf) sensor, monitors the intake air temperature. The iat sensor has a thermistor that varies its resistance depending on the temperature of the intake air. When the air temperature is low, the resistance in the thermisto ...

Definition of terms
Term Definition Monitor description Description of what the ecm monitors and how it detects malfunction (monitoring purpose and its details). Related dtcs Diagnostic code Typical enabling condition Preconditions that allow the ecm to detect m ...