Circuit/System Testing
WARNING: This page is about a different car, the 2010 Cadillac SRX. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, disconnect the X1 harness connector at the A11 radio.
- Ignition ON, test for less than 1 V between the amplifier control circuit terminal 37 and ground.
- If greater than the specified value, test the circuit for a short to voltage. If the circuit tests normal, replace the T3 audio amplifier.
- Ignition OFF, test for greater than 20 Ω between the amplifier control circuit terminal 37 and ground.
- If less than the specified value, test the circuit for a short to ground. If the circuit tests normal, replace the T3 audio amplifier.
- Ignition OFF, disconnect the X3 harness connector at the T3 audio amplifier.
- Test for less than 5 Ω between the A11 radio X1 terminal 37 to the T3 audio amplifier X3 terminal 11.
- If greater than specified range, test the circuit for an open/high resistance.
- If all circuits test normal, replace the A11 radio.