Toyota Corolla (E120): Idle signal circuit

Dtc 51 idle signal circuit

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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 ...

Replacement
Hint: installation is in the reverse order of the removal. But the installation is indicated only when it has a point. 1. Remove radiator grille sub–assy Remove the 2 bolts and clip.  using a screwdriver, remove the radiator grille. Hint: tape the screwdriver tip before use. ...

Inspection procedure
Hint: start the inspection from step 1 in case of using the hand–held tester and start from step 2 in case of not using the hand–held tester. 1 Read value of hand–held tester(front speed sensor) Select the datalist mode on the hand–held tester.  check that there is no differe ...