Toyota Corolla (E120) 2002–2008 Repair Manual / Diagnostics / Sfi system / Catalyst system efficiency below threshold

Toyota Corolla (E120): Catalyst system efficiency below threshold

Dtc p0420 catalyst system efficiency below threshold (bank 1)

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Torque converter clutch and drive plate (atm)
Inspection 1. Inspect torque converter clutch assy Inspect the one–way clutch.  Set sst into the inner race of the one–way clutch. Sst 09350–32014 (09351–32010)  set sst so that it fits in the notch of the converter hub and outer race of the one–way clutch. ...

Circuit description
The door key lock and unlock switch is built in the door lock motor. Wiring diagram Inspection procedure 1 Check door lock 2 Check wire harness (tvip ecu  door lock) Disconnect the tvip ecu and door lock connectors.  check the continuity between the terminals of the t ...

Chassis
On–vehicle inspection 1. Inspect steering linkage  check the steering wheel freeplay .  check the steering linkage for looseness or damage.  Check that the tie rod ends do not have excessive play.  Check that the dust seals and boots are not damaged.  Chec ...