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Home >> Chevrolet >> 2001 >> Impala Base, 3.8 K >> Repair and Diagnosis >> External Pages >> Different car >> Section 63 (Automatic Transaxle Diagnosis - 4T65-E) >> Diagnostic Tests >> DTC P0503: Vehicle Speed Sensor Circuit Performance >> Test Description

Test Description

WARNING: This page is about a different car, the 2002 Oldsmobile Intrigue and 2001 Oldsmobile Intrigue. However, it is still accessible from the selected car via links, so may be relevant.

The numbers listed below refer to step numbers in the diagnostic procedure:

  1. 3

    This step tests ability of VSS to produce AC voltage. This step also verifies integrity of wiring to PCM.

  2. 4

    This step tests VSS circuit for correct resistance.

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