Toyota Corolla (E170): Using the steering wheel switches to change audio source

Changing audio source

List screen operation

Other materials:

Circuit description
In the diagram below, when the engine is cranked, current flows from terminal st2 of the ignition switch to the starter relay coil and also current flows to terminal sta of the ecm (sta signal). When the sta signal and ne signal are input to the ecm, tr is turned on, current flows to the c ...

Cassette tape cannot be inserted or played
Wiring diagram Inspection procedure 1 Check for any foreign object Check for any foreign object.  Check that no foreign object or defect is detected in the cassette tape player of radio receiver assembly. Standard: no foreign object and defect detected. 2 Check cassett ...

How to proceed with troubleshooting
Hint: troubleshooting of the wireless door lock control system is based on the premise that the power door lock system is operating normally. Therefore, before troubleshooting the wireless door lock control system, first make certain that the the power door lock system is operating ...