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Circuit/System Verification

WARNING: This page is about a different car, the 2008 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.

Ignition ON, turn headlamps ON and place the turn signal/multifunction switch in the headlamp high beam position. Observe the scan tool High Beam Relay Command parameter. The reading should display On and the high beam headlamps should illuminate.

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