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Home >> Suzuki >> 2009 >> XL7 Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 73 (Charging System) >> Diagnostic Information and Procedures >> DTC B1405 >> Circuit/System Testing
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Circuit/System Testing

WARNING: This page is about a different car, the 2008 Suzuki XL7. 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 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 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.
    • If greater than specified range, test the battery current sensor supply voltage circuit for a short to voltage. If the circuit test normal, replace the BCM.
  4. Ignition ON, 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.
    • If greater than specified range, test the battery current sensor signal circuit for a short to voltage. 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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