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Home >> Chevrolet >> 2007 >> Impala SS >> Repair and Diagnosis >> External Pages >> Different car >> Section 249 (Lighting Systems) >> Diagnostic Information and Procedures >> DTC B2645 >> Circuit/System Verification

Circuit/System Verification

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, headlamp switch in the AUTO position, observe the scan tool Ambient Light Sensor parameter. The reading should be between 1.96-4.8 volts and change between day and night time conditions.

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