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Circuit/System Testing

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  1. Ignition OFF, disconnect the X3 harness connector at the turn signal multifunction switch.
  2. Ignition ON, verify the scan tool Windshield Wiper Switch parameter is OFF.
    • If not the specified value, test the signal circuit terminal N for a short to ground. If the circuit tests normal, replace the BCM.
  3. If all circuits test normal, test or replace the turn signal multifunction switch.
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