Toyota Corolla (E120): Diagnosis circuit

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Electronic control
Removal and installation of battery terminal  before performing electrical work, disconnect the battery negative (–) terminal cable beforehand so as to prevent burnt–out damage by short.  When disconnecting and installing the terminal cable, turn the ignition switch an ...

Inspection procedure
1 Check p/t squib(rh) circuit(airbaga sensor assy center – front seat outer belt assy rh) Disconnect the negative (–) terminal cable from the battery, and wait at least for 90 seconds.  disconnect the connectors between the airbag sensor assy center and the seat belt pretensi ...

On–vehicle inspection
1. Check cooling fan operation with low temperature (below 83 c (181 f)) Turn the ignition switch on.  check that the cooling fan stops. Hint: if not, check the cooling fan relay and water temperature sensor, and check for separated connector or severed wire between the cooling fan ...