Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Hummer >> 2009 >> H3T Alpha >> Repair and Diagnosis >> External Pages >> Different car >> Section 28 (Battery, Charging System And Starting System) >> Diagnostic Information and Procedures >> DTC C0899 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
  1. Measure and record the voltage at the battery terminals. With scan tool, observe the battery voltage signal parameter. Verify that battery terminal voltage and battery voltage signal readings do not differ more than 1 volt.
    • If more than 1 volt, test the battery positive voltage and ground circuits of the EBCM for an open/high resistance or replace the EBCM.
  2. Refer to Charging System Test .
scientia non olet · About Mike's Workshop Manuals