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Home >> Chevrolet >> 2010 >> Traverse LT, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 479 (Seat Heating System And Seat Cooling System) >> Diagnostic Information and Procedures >> DTC B2508 or B2509: Seat Heater Relay Circuit (With Memory A45 and KB6) >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2016 GMC Acadia, 2016 Chevrolet Traverse, and 2016 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the X1 and X4 harness connectors at the K40 Seat Memory Control Module.
  2. Test for infinite resistance between the control circuit terminal 6 X1 and ground.
    • If not the specified value, test the control circuit for a short to ground.
  3. Test for infinite resistance between the control circuit terminal 14 X1 and ground.
    • If not the specified value, test the control circuit for a short to ground.
  4. Ignition ON, verify that a test lamp does not illuminate between the control circuit terminal 6 X1 and ground.
    • If the test lamp illuminates, test the control circuit for a short to voltage.
  5. Ignition ON, verify that a test lamp does not illuminate between the control circuit terminal 14 X1 and ground.
    • If the test lamp illuminates, test the control circuit for a short to voltage.
  6. If all circuits test normal, replace the K40 Seat Memory Control Module.
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