Toyota Corolla (E120) 2002–2008 Repair Manual / Preparation / Instrument panel/meter
Toyota Corolla (E120): Instrument panel/meter
Preparation
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Recomended tools
Equipment
Seat
Preparation
Equipment
Theft deterrent & door lock
Preparation
Recomended tools
Other materials:
Fuel
Preparation
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Recomended tools
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Equipment
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How to proceed with troubleshooting
1 Vehicle brought to workshop
2 Customer problem analysis
3 Check and clear dtc
4 Problem symptom confirmation
5 Symptom simulation
6 Dtc check
7 Dtc chart
8 Problem symptoms table
9 Circuit inspection
10 Identification of problem
11 Parts inspection
12 Repair
1 ...
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 supplyin ...