Toyota Corolla (E120): Source voltage drop

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General information
There are many ecu controlled systems used in the corolla. In general, ecu controlled system are considered to be very intricate and require a high level of technical knowledge and expert skill to troubleshoot. The fact is, however, that if you proceed by inspecting the circuits one by one, ...

Inspection procedure
1 Inspect park/neutral position switch assy Disconnect the park/neutral position switch connector.  measure resistance according to the value(s) in the table below when the shift lever is moved to each position. Standard: 2 Check harness and connector(park/neutral position ...

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 active te ...