Toyota Corolla (E120): Window defogger system

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Manual air conditioning system∗
Air conditioning controls ► Heater ► Air conditioning system ■ Adjusting the temperature setting ► Heater To adjust the temperature setting, turn the dial clockwise to increase the temperature. ► Air conditioning system To adjust the temperature setting, tu ...

Inspection procedure
Hint: hand–held tester only: narrowing down the trouble area is possible by performing ”a/f control” active test (heated oxygen sensor or other trouble areas can be distinguished).  perform active test using hand–held tester (a/f control). Hint: ”a/f control” is the act ...

How to proceed with troubleshooting
The hand–held tester can be used at step 4, 6, 8 and 9. 1 Vehicle brought to workshop 2 Customer problem analysis 3 Warning light check 4 The dtcs check (present and past dtcs) 5 The dtcs chart 6 Circuit inspection 7 Repair 8 Clear the dtcs (present and past dtcs) 9 The dt ...