Toyota Corolla (E120): Diagnosis circuit

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Registering and connecting from the “Bluetooth* Setup” screen
To display the screen shown below, press the “SETUP” button and select “Bluetooth*” on the “Setup” screen. 1 Select to connect the device to be used with multimedia system. 2 Select to register a Bluetooth® device to be used with multimedia system. 3 Select to set detailed Bluet ...

Precaution
1. Check that the battery cables are connected to the correct terminals. 2. Disconnect the battery cables when the battery is given a quick charge. 3. Do not perform tests with a high voltage insulation resistance tester. 4. Never disconnect the battery while the engine is running. 5. Check that ...

Inspection
1. Cooling fan relay Inspect the cooling fan relay continuity.  Using an ohmmeter, check that there is continuity between terminals 1 and 2. If there is no continuity, replace the relay.  Check that there is no continuity between terminals 3 and 5. If there is conti ...