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Toyota Corolla Repair Manual: Fuel pump control circuit

Toyota Corolla Repair Manual / Diagnostics / Sfi system / Fuel pump control 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 ...

Circuit description
In the diagram below, when the engine is cranked, current flows from terminal st2 of the ignition switch to the starter relay coil and also current flows to terminal sta of the ecm (sta signal). ...

Other materials:

Foamed material application areas
If an increase in temperature or other condition damages the foamed material when repairing or replacing the panel, fill in the insufficient areas with urethane foam. The following illustration shows the areas for one side, but the foamed material must be applied equally to both the left and r ...

How to proceed with troubleshooting
The handheld tester can be used at step 3, 4, 5, 7, 10. 1 Vehicle brought to workshop 2 Customer problem analysis 3 Connect handheld tester to dlc3 Hint: if the display indicates a communication fault in the tool, inspect dlc3. 4 Check dtc and freeze frame data Hint: record or print ...

Problem symptoms table
Hint: if a normal code is displayed during the dtc check but the trouble still occurs, check the circuits for each symptom in the order given in the charts on the following pages and proceed to the page given for troubleshooting. The matrix chart is divided into 3 chapters. If the instruc ...

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