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Home >> Chevrolet >> 2002 >> Venture Plus >> Repair and Diagnosis >> External Pages >> Different car >> Section 1341 (Electronic Suspension System - Automatic Level Control) >> Diagnostic Information and Procedures >> DTC C0657: Level Control Compressor Circuit Low; C0658: Level Control Compressor Circuit High >> Test Description

Test Description

WARNING: This page is about a different car, the 2002 Cadillac Eldorado. 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. 2. Tests for voltage in the Automatic Level Control relay coil supply voltage circuit.
  2. 3. Tests for a short to voltage in the Automatic Level Control relay coil supply voltage circuit.
Fig 1: DTC C0657 Or C0658
G01651934Courtesy of GENERAL MOTORS CORP.
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