Toyota Corolla (E120): Door unlock detection switch circuit

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Purpose of the readiness tests
The on–board diagnostic (obd ii) system is designed to monitor the performance of emission–related components and report any detected abnormalities in the form of diagnostic trouble codes (dtcs). Since the various components need to be monitored during different driving condition ...

Fail–safe chart
If any of the following codes is recorded, the ecm enters the fail–safe mode. Check for intermittent problems Hand–held tester only: by putting the vehicle’s ecm in the check mode, the 1 trip detection logic is possible instead of the 2 trip detection logic, and the sensitivity to de ...

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 ...