Toyota Tacoma manuals

Toyota Corolla Repair Manual: 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.

This signal causes current to flow to the coil, closing the contacts of the efi relay and supplying power to terminal +b of the ecm.

If the ignition switch is turned off, the ecm continues to switch on the efi relay for a maximum of 2 seconds for the initial setting of the isc valve.

Wiring diagram

Inspection procedure

Ecm power source circuit
...

Inspection procedure
1 Inspect ecm(+b voltage) Turn the ignition switch on.  measure the voltage between the terminals of the e4 and e6 ecm connectors. Standard: 2 Check harness and connector(ec ...

Other materials:

Inspection procedure
Hint Advanced timing over (valve timing is out of specified range) P0011 Retarded timing over (valve timing is out of specified range) P0012 If dtc p0011 or p0012 is displayed, check the vvt system circuit. Read freeze frame data using the handheld tester or ...

Body dimension drawings
Engine compartment Body opening areas (side view: front) Body opening areas (side view: rear) Sedan Body opening areas (rear view) Sedan Under body Under body Front suspension crossmember Front suspension crossmember ...

Circuit description
Refer to dtc p0010 Dtc no. Dtc detection condition Trouble area P0011 Condition (a) or (b) continues after engine is warmed up and engine speed at 550 to 4,000 rpm (problem of the advanced ocv):  valve timing does not change from current valve tim ...

2011-2021 Copyright www.tcorolla.net