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Home >> Chevrolet >> 2001 >> Cavalier LS, 2.2 4 >> Repair and Diagnosis >> External Pages >> Different car >> Section 339 (Lighting Systems) >> Diagnostic Information and Procedures >> DTC B2601: DRL Relay Control Circuit Shorted To Ground >> Test Description

Test Description

WARNING: This page is about a different car, the 2003 Pontiac Sunfire and 2003 Chevrolet Cavalier. 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. This step determines if a short to ground in the DRL relay control circuit or an open or high resistance in the left hand headlamp supply voltage circuit is causing DTC 2601 to set. A short to ground in the DRL relay control circuit will cause the DRLs to be on in this step. An open or high resistance in the left hand headlamp supply voltage circuit will cause the DRLs to not be illuminated in this step.
  2. This step determines if the BCM has an internal short to ground.
Fig 1: DTC B2601
G01558790Courtesy of GENERAL MOTORS CORP.
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