Toyota Corolla (E120): Circuit description

Wiring diagram

Wiring diagram

Inspection procedure

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    Inspection procedure
    Hint: if dtc p0441 (purge flow), p0446 (vsv for ccv or vsv for pressure switching valve), p0451, p0452 or p0453  is output with dtc p0442 or p0456 , first troubleshoot dtc p0441, p0446, p0451, p0452 or p0453. If no malfunction is detected, troubleshoot dtc p0442 or p0456 next. ...

    Emission inspection and maintenance (I/M) programs
    Some states have vehicle emission inspection programs which include OBD (On Board Diagnostics) checks. The OBD system monitors the operation of the emission control system. If the malfunction indicator lamp comes on The OBD system determines that a problem exists somewhere in the emission control sy ...

    Transmission valve body assy (atm)
    Replacement 1. Remove engine under cover lh 2. Drain automatic transaxle fluid  remove the drain plug, gasket and drain atf.  install a new gasket and drain plug. Torque: 17.5 Nvm (178 Kgf·cm, 13 ft·lbf) 3. Remove automatic transaxle oil pan sub–assy Remove the 18 ...