Circuit/System Testing

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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
- Left audio signal (-) - terminal 9
- Right audio signal (-) - terminal 10
- 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.