Toyota Corolla (E120): Circuit description

If the ignition switch is turned to the on position, battery positive voltage is applied to the switches, such as terminal ig of the ecu.

Wiring diagram

Inspection procedure

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    Basic inspection
    Resistance measuring condition of electronic parts  unless stated, all resistance is measured at an ambient temperature of 20 c (68 °F). As the resistance may be outside the specifications if measured at high temperatures immediately after the vehicle has been running, measu ...

    Bluetooth® Audio
    Operating a Bluetooth® enabled portable player 1 Power 2 Volume 3 Select an album, fast-forward or reverse 4 Repeat play 5 Random playback 6 Selecting an item 7 Displays text message 8 Playback 9 Playback/pause 10 Search playback 11 Select a track Selecting an album Press ( ) or ...

    Inspection procedure
    1 Inspect dlc3 terminal voltage(ts terminal) Turn the ignition switch to on. measure voltage between terminals ts and cg of dlc3. Ok: voltage: 10 – 14 v 2 Check harness and connector(dlc3 – body ground) Check for open and short circuit in harness and connector between ...