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Home >> Cadillac >> 2019 >> Escalade Base, RWD >> Repair and Diagnosis >> Electrical >> Charging Systems >> Battery, Charging System And Starting System >> Diagnostic Information and Procedures >> Auxiliary Battery System Malfunction >> Circuit/System Verification

Circuit/System Verification

  1. Ignition On - Engine Running
  2. All accessories OFF, slowly increase the engine speed to 2500 RPM.
  3. Verify voltage measured at the C1B Battery - Auxiliary is within 1 V of voltage measured at the C1 Battery - Primary.
    • If not within 1 V 
    1. Ignition - Cycle On and Off

      Verify the component does not turn On and Off: KR79 Auxiliary Battery Relay 2

      • If the component turns On and Off

        Refer to: Circuit/System Testing - Test 1

      • Go to next step: If the component does not turn On and Off
    2. Ignition - Cycle On and Off

      Verify the component turns On and Off: KR81 Auxiliary Battery Relay 1

      • If the component does not turn On and Off

        Refer to: Circuit/System Testing - Test 2

      • Go to next step: If the component turns On and Off

        Go to next step: Refer to: Circuit/System Testing - Test 3

    • Go to next step: If within 1 V 
  4. All OK.
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