Toyota Corolla (E120) 2002–2008 Repair Manual / Introduction / How to troubleshoot ecu controlled systems

Toyota Corolla (E120): How to troubleshoot ecu controlled systems

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Inspection procedure
Hand–held tester: 1 Check fuel tank cap assy(check that fuel tank cap is toyota genuine parts) 2 Check that fuel tank cap is correctly installed 3 Inspect fuel tank cap assy 4 Check filler neck for damage Remove the fuel tank cap.  visually check the fuel inlet pipe for ...

Circuit description
The side airbag sensor assy (lh) circuit consists of the diagnosis circuit and lateral deceleration sensor, etc. It receives signals from the lateral deceleration sensor, judges whether or not the srs must be activated, and detects diagnosis system malfunction. Dtc b1141/33 is recorded wh ...

Circuit description
Shifting from 1st to o/d is performed in combination with on and off of the shift solenoid valve s1 and s2 controlled by ecm. If an open or short circuit occurs in either of the solenoid valves, the ecm controls the remaining normal solenoid valve to allow the vehicle to be operated smoothly ...