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Home >> Cadillac >> 2012 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 131 (Engine Controls - Self-Diagnostics) >> Diagnostic Tests >> DTC P0502: Vehicle Speed Sensor Low Output >> Test Description
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Test Description

WARNING: This page is about a different car, the 2003 Cadillac Seville and 2003 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to the step numbers in the diagnostic procedures.

  1. 2

    This step tests for DTCs and for a vehicle speed signal. It is important to record Freeze Frame and Failure Record information before proceeding further.
  2. 5

    This step tests for a resistance value greater than 1950 ohms which would indicate an open in the high signal circuit, the low signal circuit or the Vehicle Speed Sensor (VSS).