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Home >> Cadillac >> 2009 >> Escalade Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 207 (Transfer Case - Mp 3023/3024-NQH) >> Diagnostic Information and Procedures >> Transfer Case Shift Control Switch Indicator Inoperative - One or More >> Circuit/System Description

Circuit/System Description

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The indicator circuits consists of an interior lights dimming circuit and an indicator control circuit. When a mode has been selected, current is supplied to the indicator by the interior lights dimming circuit, traveling through the indicator LED, at which time the transfer case shift control module supplies the ground through the indicator lamp control circuit.