Circuit/System Testing
WARNING: This page is about a different car, the 2012 Chevrolet Sonic. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, disconnect the harness connector at the appropriate P19 speaker.
- Radio ON, mute OFF, test for 5.0-7.5 V between each audio signal circuit terminal 1 and terminal 2 and ground.
- If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the radio.
- If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
- Insert the EL-50334-6 Audio Test CD from the EL-50334-50 USB cable and adapter kit.
- Play track number three (50 Hz bass test tone) from the test CD. Test for 49-51 Hz AC between each signal circuit terminal 1 and terminal 2 and ground.
- If not the specified value, replace the A11 radio.
- If all circuits test normal, replace the P19 speaker.
NOTE:
In the following tests, audio signal frequencies (Hz) will be tested. To prevent misdiagnosis, the door chime must be OFF during testing. Ensure the driver door latch is closed during testing.