Circuit/System Testing
WARNING: This page is about a different car, the 2011 Chevrolet Caprice. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, disconnect the harness connector at the appropriate speaker.
- Radio ON, test for 5.0-7.5 V between the appropriate audio signal circuit terminals listed below and ground.
- Door speaker terminal A
- Door speaker terminal B
- Tweeter speaker terminal 1
- Tweeter speaker terminal 2
- 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 EL-50334-50 USB Cable and Adapter Kit.
- Mute OFF, play track number three (50 Hz bass test tone) from the test CD. Test for 49-51 Hz AC between the appropriate audio signal circuit terminals listed below and ground.
- Door speaker terminal A
- Door speaker terminal B
- Tweeter speaker terminal 1
- Tweeter speaker terminal 2
- If not the specified value, replace the A11 radio.
- If all circuits test normal, replace the appropriate speaker.