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Toyota Corolla Repair Manual: Ecm power source circuit

Toyota Corolla Repair Manual / Diagnostics / Sfi system / Ecm power source circuit

Inspection procedure
Hint: this dtc chart is on the premise that the engine is cranked normally. If the engine is not cranked, proceed to the problem symptoms table on page 0542. Read freeze frame data using t ...

Circuit description
When the ignition switch is turned on, battery positive voltage is applied to the coilwhich closes the contacts of the efi main relay (marked: efi) and supplies power to terminal +b of the ecm. ...

Other materials:

Indicators
The indicators inform the driver of the operating state of the vehicles various systems. *1: Vehicles without a smart key system: These lights turn on when the engine switch is turned to the ON position to indicate that a system check is being performed. They will turn off after the engin ...

Malfunction in clock
Wiring diagram Inspection procedure 1 Inspect fuse Check the continuity in cig fuse.  check the continuity in dome fuse. 2 Inspect harness or connector Check voltage.  Remove the clock assy with connector still connected.  Measure voltage between ter ...

Onvehicle inspection
1. Inspect drive belt Visually check the belt for excessive wear, frayed cords, etc. If any defect is found, replace the drive belt. Hint: cracks on the rib side of a belt are considered acceptable. If the missing chunks from the ribs are found on the belt, it should be replaced. 2 ...

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