Toyota Corolla (E120): Engine control system

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Disabling the TRAC system
If the vehicle gets stuck in mud, dirt or snow, the TRAC system may reduce power from the engine to the wheels. Pressing to turn the system off may make it easier for you to rock the vehicle in order to free it. To turn the TRAC system off, quickly press and release . The “TRAC OFF” ind ...

Circuit description
A flat type knock sensor (non–resonant type) has the structure that can detect the vibration in a wider band of frequency from about 6 khz to 15 khz and has the following features. Knock sensors are fitted on the cylinder block to detect the engine knocking. The sensor contains a piezoele ...

On–vehicle inspection
1. Connect hand–held tester:  connect the hand–held tester to the dlc3.  start the engine and run it at idle.  select the active test mode on the hand–held tester. Hint: please refer to the hand–held tester operator’s manual for further details. 2. Inspect actua ...