Test Description

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

2. Verifies that the temperature displayed is not within the calibrated range.
3. Tests for the proper operation of the circuit in the high voltage range.
4. Tests for the proper operation of the circuit in the low voltage range. If the fuse in the jumper opens when you perform this test, the signal circuit is shorted to voltage.

Fig 1: DTC B0174, B0179, B0510, Or B0515 Diagnosis Procedure (Step 1 To 3)
Courtesy of GENERAL MOTORS CORP.

Fig 2: DTC B0174, B0179, B0510, Or B0515 Diagnosis Procedure (Step 4 To 12)
Courtesy of GENERAL MOTORS CORP.