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Home >> Cadillac >> 2013 >> Escalade Base, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 8 (Hybrid/EV Energy Storage System) >> Diagnostic Information and Procedures >> Drive Motor Battery Noise >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.
  1. Ignition ON, command the hybrid drive motor battery fan ON and OFF with a scan tool. The fan should not make objectionable noise. Some noise is considered normal.
  2. Ignition ON, command the HV contactors ON and OFF with a scan tool one at a time. The contactors should not make objectionable noise. Some noise is considered normal.
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