Toyota Corolla Quiz
Diagnostics

Inspection procedure

In this manual: Diagnostics
Introduction — 31Preparation — 32Service specifications — 19Diagnostics — 497Engine control system — 6Fuel — 13Emission control — 28Exhaust — 3Cooling — 13Lubrication — 7Ignition — 3Starting & charging — 13Front suspension — 12Rear suspension — 9Tire & wheel — 1Drive shaft / propeller shaft — 15Brake — 42Automatic transmission / trans — 47Clutch — 19Steering column — 9Power steering — 11Heater & air conditioner — 20Supplemental restraint system — 27Seat belt — 12Lighting — 18Wiper & washer — 9Audio & visual — 12Wiring — 1Communication system — 1Windshield/windowglass/mirror — 31Seat — 10Theft deterrent & door lock — 10Sliding roof/convertible — 8Engine hood/door — 12Exterior/interior trim — 20Vehicle control system — 1Cruise control — 5Maintenance — 8
15steps
~90min
4/5difficulty
Done 0 of 15
Hint

: read freeze frame data using the hand-held tester or the obd ii scan tool. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, it is useful for determining whether the vehicle was running or stopped, the engine was warmed up or not, the air–fuel ratio was lean or rich, etc. At the time of the malfunction.

 1 Check fuse(efi fuse)
Toyota Corolla. Check fuse
  1. Remove the efi fuse from the engine room r/b.
  2. check for continuity in the efi fuse.

    Standard: continuity

  3. reinstall the efi fuse.
    2 Inspect ecm(batt voltage)
2 Inspect ecm(batt voltage)
Toyota Corolla. Inspect ecm
  1. Measure the voltage between the terminals of the e4 and e6 ecm connectors.

Standard:

3 Check harness and connector(ecm – efi fuse, efi fuse – battery)
3 Check harness and connector(ecm – efi fuse, efi fuse – battery)
Toyota Corolla. Check harness and connector
  1. Check the harness and the connector between the efi fuse and ecm.
  2. Remove the efi fuse from the engine room r/b.
  3. Disconnect the e6 ecm connector.
  4. Check the resistance between the wire harness side connectors.

Standard (check for open):

Standard (check for short):

Standard (check for short):

Toyota Corolla. Check harness and connector
  1. Reconnect the ecm connector.
  2. Reinstall the efi fuse.
  3. check the harness and the connector between the efi fuse and battery.
  4. Remove the efi fuse from the engine room r/b.
  5. Disconnect the battery positive terminal.
  6. Check the resistance between the wire harness side connectors.

Standard (check for open):

Standard (check for short):

Standard (check for short):

  1. Reconnect the battery positive terminal.
  2. Reinstall the efi fuse.
    Check and replace engine room relay block assy
Check and replace engine room relay block assy

Test yourself

A quick Toyota Corolla quiz: every answer comes with an explanation and a link to the manual page.