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Home >> Chevrolet >> 2010 >> Traverse LS, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 249 (Horn System) >> Diagnostic Information and Procedures >> DTC B2750 >> Component Testing
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Component Testing

WARNING: This page is about a different car, the 2011 GMC Acadia, 2011 Chevrolet Traverse, and 2011 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the horn relay.
  2. Test for 60-180 ohms between terminals 85 and 86.
    • If not within the specified range, replace the relay.
  3. Test for infinite resistance between the following terminals:
    • 30 and 86
    • 30 and 87
    • 30 and 85
    • 85 and 87
    • If not the specified value, replace the relay.
  4. Install a 30-amp fused jumper wire between relay terminal 85 and 12 volts. Install a jumper wire between relay terminal 86 and ground. Test for less than 2 ohms between terminals 30 and 87.
    • If greater than the specified range, replace the relay.
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