Toyota Corolla Quiz
Diagnostics

Terminals of ecu

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
3steps
~18min
2/5difficulty
Done 0 of 3
1. Inspect integration relay
Toyota Corolla. Inspect integration relay
  1. Disconnect the connector and check the continuity of each terminal of the disconnected connector.

Standard :

If the result is not as specified, the vehicle’s side may malfunction.

If the result is not as specified, the vehicle’s side may malfunction.

  1. Reconnect the connector and check each terminal.

Standard:

If the result is not as specified, the integration relay may malfunction.

If the result is not as specified, the integration relay may malfunction.

2. Inspect instrument panel j/b (integration relay)
Toyota Corolla. Inspect instrument panel j/b
  1. Inspect the door fuse.
  2. disconnect connectors id, if, ih and ij of the instrument panel j/b.
  3. check each terminal of the disconnected connectors.

Standard:

Toyota Corolla. Inspect instrument panel j/b

If the result is not as specified, the vehicle’s side may malfunction.

  1. reconnect the connectors and check each terminal.

Standard:

Toyota Corolla. Inspect instrument panel j/b

If the result is not as specified, the instrument panel j/b (integration relay) assembly may malfunction.

Test yourself

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