LEMON Manuals: Even more car manuals for everyone
Home >> Cadillac >> 2006 >> STS V >> Repair and Diagnosis >> External Pages >> Different car >> Section 130 (Battery, Charging System And Starting System) >> Diagnostic Information and Procedures >> DTC B1405 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2007 Cadillac SRX. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the battery current sensor.
  2. Ignition OFF, test for less than 1 ohm of resistance between the low reference circuit terminal B and ground.
    • If the 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 5 volts between the supply voltage circuit terminal A and ground.
    • If less than the specified range, test the supply voltage for a short to ground or an open/high resistance. If the circuit test normal replace the BCM.
  4. Test for 5 volts between the signal circuit terminal C and ground.
    • If less than 5 volts test the 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.
scientia non olet · About LEMON Manuals