Test Description

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)

Courtesy of GENERAL MOTORS CORP.

Fig 2: DTC B2958 (2 Of 2)

Courtesy of GENERAL MOTORS CORP.