Toyota Corolla Quiz
Diagnostics

Checking monitor status

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
7steps
~42min
2/5difficulty
Done 0 of 7
Hint

: ”monitor result” indicates normal or malfunction of each component and system when judgment has done.

 1. How to read data
Toyota Corolla. How to read data
  1. Connect the hand–held tester to the dlc 3.
  2. enter ”monitor result” from ”diagnosis / enhanced obd ii / monitor info / monitor result” on the hand–held tester. You will see ”test id” and ”incmp”, ”pass” or ”fail” on the monitor result screen.
Hint

:
  • incmp: the judgement has not been done yet.
  • Pass: normal is detected.
  • Fail: malfunction is detected.
Toyota Corolla. How to read data
  1. Select a test id that you want from the list and press the ”enter” button. You will see the following screen:
  2. val (test value) [test data] [unit]
  3. lmt (test limit) [test limit] [unit]
  4. tlt [test limit type]
    Toyota Corolla. How to read data
  5. By pressing the ”help” button, you can see more information.
Hint

:
  • monitor test results can be viewed in the monitor result screen.
  • Monitor test results indicate the latest malfunction judgement result of this diagnostic.
  • Test value indicates the detection parameter value (example: p0128 thermostat malfunction = engine coolant temperature) at the time of malfunction (or normal) judgement is done.
  • Test limit indicates a threshold of malfunction judgement (example: p0128 thermostat malfunction = 75 c).
  • When the monitor runs, the monitored parameter’s value is recorded. The value is then compared to the test limit to determine if the result is pass or fail.
  • By comparing the parameter value to the test limit, it is possible to determine the degree of failure.
  • In rare cases, the monitor may have passed even with a dtc set and mil illuminated. The monitor may have failed on a previous trip, and then passed on the most recent trip. This would indicated an intermittent problem may be the cause of the dtc.

Test yourself

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