Toyota Corolla (E120): Diagnosis circuit

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Emission inspection and maintenance (I/M) programs
Some states have vehicle emission inspection programs which include OBD (On Board Diagnostics) checks. The OBD system monitors the operation of the emission control system. If the malfunction indicator lamp comes on The OBD system determines that a problem exists somewhere in the emission cont ...

Checking monitor status
Hint: ”monitor result” indicates normal or malfunction of each component and system when judgment has done. 1. How to read data Connect the hand–held tester to the dlc 3.  enter ”monitor result” from ”diagnosis / enhanced obd ii / monitor info / monitor result” on ...

Replacement
1. Remove engine under cover rh 2. Drain coolant 3. Remove front wheel rh 4. Remove cylinder head cover no.2 Remove the 2 nuts, 2 clips and cylinder head cover. 5. Remove fan and generator v belt Turn the v–ribbed belt tensioner slowly clockwise and loosen it. Then, remove ...