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Home >> Chevrolet >> 2013 >> Traverse LS, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 17 (Cellular Systems, Entertainment Systems & Navigation Systems) >> Diagnostic Information and Procedures >> DTC B1278 or B1279 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2010 Cadillac SRX. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the X1 harness connector at the auxiliary audio jack.
  2. Ignition ON, test for less than 1 V between the terminals listed below and ground:
    • signal terminal 1
    • signal terminal 2
    • If greater than the specified value, test the circuit for a short to voltage. If the circuit tests normal, replace the multimedia player interface module.
  3. Ignition OFF, test for infinite resistance between the terminals listed below and ground:
    • signal terminal 1
    • signal terminal 2
    • If less than the specified value, test the circuit for a short to ground. If the circuit tests normal, replace the multimedia player interface module.
  4. If all of the circuits test normal, replace the auxiliary audio jack.
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