Toyota Corolla (E120): Problem symptoms table

The suspected circuits or parts for each problem symptom are shown in the table below. Use this table to troubleshoot the problem when a normal code is displayed in the diagnostic trouble code chart but the problem is still occurring. Numbers in the table indicate the order in which the circuits or parts should be checked.

Hint: when the problem is not detected by the diagnostic system even though the problem symptom is present, it may be that the problem is occurring outside the detection range of the diagnostic system.

Circuit inspection

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    Inspection procedure
    1 Inspect ecm(+b voltage) Turn the ignition switch on.  measure the voltage between the terminals of the e4 and e6 ecm connectors. Standard: 2 Check harness and connector(ecm – body ground) Disconnect the e4 ecm connector. check the resistance between the wire ...

    Follow the correction procedures. (vehicles with a smart key system and with a drive monitor display)
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    1 Display the “Bluetooth* Setup” screen. 2 Select “System Settings”. 3 The following screen is displayed: 1 Bluetooth® Power on/off You can change Bluetooth® function on/off 2 Bluetooth® Name 3 Change PIN-code 4 Bluetooth® Address 5 Display Phone Status You can set the system ...