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
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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:

Setting the speed
Maintaining and storing the speed Press the rocker switch up or down once while the system is interrupted. When the system is switched on, the current speed is maintained and stored as the desired speed. The stored speed is displayed in the speedometer and briefly in the instrument cluster. DSC ...

Onvehicle inspection
1. Connect handheld tester:  connect the handheld tester to the dlc3.  start the engine and run it at idle.  select the active test mode on the handheld tester. Hint: please refer to the handheld tester operators manual for further details. 2. Inspect actuator motor ...

Problem symptoms table
Proceed to the reference page shown in the table below for each malfunction symptom and troubleshoot each circuit. Hint: troubleshooting of the tvip system is based on the premise that the door lock control system and wireless door lock control system is operating normally. Accordingly, be ...

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