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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1204 (Horn System) >> Diagnostic Information and Procedures >> DTC B2527: Short To Ground Or An Open In The Horn Relay Control Circuit >> Test Description

Test Description

WARNING: This page is about a different car, the 2003 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.

The number(s) below refer to the step number(s) on the diagnostic table.

  1. Listen for an audible click when the horn relay operates. Command both the ON and OFF states. Repeat the commands as necessary.
  2. Tests for voltage at the coil side of the horn relay.
  3. Verifies that the body control module (BCM) is providing ground to the horn relay.
  4. Tests if ground is constantly being applied to the horn relay.
Fig 1: DTC B2527
G01454054Courtesy of GENERAL MOTORS CORP.
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