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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1109 (Battery, Charging System And Starting System) >> Diagnostic Information and Procedures >> DTC B1517 >> Circuit/System Testing >> B1517 03, B1517 07

B1517 03, B1517 07

WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
  1. If the DTC is history, refer to Charging System Test .
  2. Ignition On, record the voltage at the battery terminals. Observe the scan tool BCM battery positive voltage parameter. The battery terminal and BCM parameter should not differ by more than 2 volts.
    • If not within the specified range, test the B+ circuits of the BCM X3 terminal 3 and X4 terminal 10 to ground circuit X4 terminal 9.
    • If not within the specified range, test the B+ circuits for a short to ground or an open/high resistance and the ground circuit for an open/high resistance.
  3. If all the circuits test normal, test or replace the BCM.
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