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B1516 08: Notes

WARNING: This page is about a different car, the 2006 Buick Lucerne. However, it is still accessible from the selected car via links, so may be relevant.

Battery Current Sensor Signal Invalid

  1. Ignition OFF, disconnect the harness connector at the battery current sensor.
  2. Ignition OFF, test for less than 1.0 ohm of resistance between the low reference circuit terminal B and ground.
    • If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal replace the BCM.
  3. Ignition ON, test for 4.8 - 5.2 volts between the battery current sensor supply voltage circuit terminal A and ground.
    • If less than the specified range, test the battery current sensor supply voltage circuit for a short to ground or an open/high resistance. If the circuit test normal replace the BCM.
  4. Test for 4.8 - 5.2 volts between the battery current sensor signal circuit terminal C and ground.
    • If less than the specified range test the battery current sensor signal circuit for a short to ground or an open/high resistance. If the circuit test normal replace the BCM.
  5. If all circuits test normal test or replace the battery current sensor.
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