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Home >> Cadillac >> 2009 >> Escalade Base, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Hybrid Engine Controls - DTC P181C To DTC P2797) >> DTC P1B0F or P1B10 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.
  1. Observe the BECM Contactor Sys. Req. Signal parameter. The HV contactor relays should be Closed, enabling the high voltage system.
    • If the HV contactor relays are Open, diagnose and repair the DTCs which are preventing high voltage from being enabled.
  2. Ignition OFF, wait 2 minutes.
  3. Ignition ON, wait 2 minutes and then turn ignition OFF.
  4. Ignition ON, monitor DTC Status. DTC P1B10 and P1B0F should have passed last test.
    • If the DTC has passed, clear DTC Information. No further diagnosis of this DTC is necessary.
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