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Home >> Cadillac >> 2012 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 1780 (Power Door Lock System And Release Systems) >> Diagnostic Information and Procedures >> DTC B396B >> Circuit/System Testing
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Circuit/System Testing

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  1. Ignition OFF, disconnect the X3 harness connector at the liftgate control module.
  2. Test for less than 15 Ω between the control terminal 14 at the liftgate control module and ground.
    • If greater than the specified range, replace the liftgate control module.
  3. Test for less than 15 Ω between the control terminal 13 at the liftgate control module and ground.
    • If greater than the specified range, replace the liftgate control module.
  4. Test for 9-10 Ω between the control circuit terminal 13 and control circuit terminal 14 at the liftgate motor assembly.
    • If less than the specified range, test either control circuit for a short to ground. If the circuits test normal, replace the liftgate actuator assembly.
    • If greater than the specified range, test either control circuit for a short to voltage or an open/high resistance. If the circuits test normal, replace the liftgate actuator assembly.
  5. If all circuits test normal, replace the liftgate control module.
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