Circuit/System Testing
WARNING: This page is about a different car, the 2010 Chevrolet HHR. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, disconnect the harness connector at the PAL module.
- Test for less than 5 Ω between terminal 9 and ground.
- If greater than specified value, test the ground circuit for an open/high resistance.
- Ignition ON, verify that a test lamp illuminates between terminal 16 and ground.
- If the test lamp does not illuminate, test the B+ circuit for an open/high resistance.
- Ignition OFF, reconnect the harness connector at the PAL module.
- Disconnect the X2 harness connector at the radio.
- Radio ON, iPod sourced and playing, test for a varying mV AC voltage between the following signal circuit terminals listed below and ground.
- Left audio signal (+) - terminal 1
- Right audio signal (+) - terminal 2
- Audio common signal (-) - terminal 9
- If the varying mV A/C voltage is not present, test the signal circuit for a short to voltage, short to ground, or an open/high resistance. If the circuits tests normal, replace the PAL module.
- If all circuits test normal, replace the radio.
PAL LED Indicator Malfunction
- Ignition OFF, disconnect the PAL harness connector.
- Ignition ON, verify that a test lamp illuminates between the PAL B+ circuit terminal and ground.
- If the test lamp does not illuminate, test the B+ circuit for an open/high resistance.
- Verify that a test lamp illuminates at both PAL ground circuit terminals and B+.
- If the test lamp does not illuminate, test the ground circuits for an open/high resistance.
- If all circuits test normal, replace the PAL.