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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 20 (Theft Deterrent System) >> Diagnostic Tests >> DTC B2958: BCM Signal Input Greater Than 4.9 Volts After Ignition CRANK >> Test Description

Test Description

WARNING: This page is about a different car, the 2002 GMC Safari, 2002 Chevrolet Astro, 2001 GMC Safari, and 2001 Chevrolet Astro. However, it is still accessible from the selected car via links, so may be relevant.

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

  1. 3. Tests for proper operation of the circuit in the high voltage range.
  2. 4. Tests for proper operation of the circuit in the low voltage range.
  3. 5. Tests for high resistance or an open in the 12V reference circuit.
  4. 7. Tests for a short to voltage, a high resistance, or an open in the signal circuit.
  5. 8. Tests for high resistance or an open in the ground circuit.

Fig 1: DTC B2958 (1 Of 2)
G00377253Courtesy of GENERAL MOTORS CORP.
Fig 2: DTC B2958 (2 Of 2)
G00377254Courtesy of GENERAL MOTORS CORP.
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