Toyota Corolla (E120): Ecu power source circuit

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Circuit description
The ignition switch provides circuit power and the ecm provides the circuit ground that illuminates the mil. Mil operation is checked visually: it should be illuminated when the ignition is first turned on. If the mil is off all of the time or on all of the time, use the procedure below to ...

Replacement
Hint: installation is in the reverse order of the removal. But the installation is indicated only when it has a point. In the lh side, work in the same procedure as in the rh side. 1. Disconnect battery negative terminal 2. Remove front seat assembly rh 3. Remove front seat inner be ...

Circuit description
The fuel trim is related to the feedback compensation value, not to the basic injection time. The fuel trim includes the short–term fuel trim and the long–term fuel trim. The short–term fuel trim is the short–term fuel compensation used to maintain the air–fuel ratio at stoichiomet ...