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Home >> Chevrolet >> 2002 >> Astro Van Passenger, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 797 (Antilock Brake System) >> Diagnostic Information and Procedures >> DTC C0235 to C0237 or P0609: Rear Wheel Speed Signal Circuit >> Test Description

Test Description

WARNING: This page is about a different car, the 2003 GMC Safari and 2003 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. This step tests for a voltage signal from the PCM.
  2. 4. This step tests for a missing or erratic vehicle speed signal from the PCM. An assistant may be required in order to perform this test.
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