Circuit/System Testing : Notes

WARNING: This page is about a different car, the 2006 Chevrolet Monte Carlo and 2006 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.

Ignition ON and headlamps OFF, with a test lamp connected to ground, probe each of the test points on the DRL 1 fuse while commanding the DRL ON and OFF with a scan tool. The test lamp should illuminate at one or both of the fuse test points.

If the test lamp does not illuminate at either test point, refer to DRL Relay Circuit Test .
If the test lamp illuminates, refer to DRL Circuit Test .