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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 819 (Theft Deterrent System) >> Diagnostic Information and Procedures >> DTC B2958: BCM Signal Input Low >> Test Description

Test Description

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The numbers below refer to the step numbers on the diagnostic table.

  1. Tests for proper operation of the circuit in the high voltage range.
  2. Tests for proper operation of the circuit in the low voltage range.
  3. Tests for high resistance or an open in the 12V reference circuit.
  4. Tests for a short to voltage, a high resistance, or an open in the signal circuit.
  5. Tests for high resistance or an open in the ground circuit.
Fig 1: Diagnostic System Check - DTC B2958 (1 Of 2)
G01458339Courtesy of GENERAL MOTORS CORP.
Fig 2: Diagnostic System Check - DTC B2958 (2 Of 2)
G01458340Courtesy of GENERAL MOTORS CORP.
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