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Test 40G - Dimming Interior Displays

NOTE: For connector terminal identification, see CONNECTOR  IDENTIFICATION. For wiring diagram, see WIRING DIAGRAMS  . Perform TEST VER-1 after each repair.
CAUTION: Always turn ignition switch to OFF position prior to disconnecting or connecting any module connector.
  1. Disconnect Body Control Module (BCM) Black connector. Check, clean and repair connections as needed. Using DRB, measure resistance at BCM Black connector terminal No. 6 (Yellow/Black wire). If resistance is more than 5 ohms, replace BCM. If resistance is less than 5 ohms, go to next step.
  2. Disconnect left pod switch assembly connector. See Figure . Check, clean and repair connections as needed. If resistance is more than 5 ohms, replace dimmer switch, located in left pod switch. If resistance is less than 5 ohms, go to next step.
  3. Disconnect radio connector. Check, clean and repair connections as needed. If resistance is more than 5 ohms, replace radio. If resistance is less than 5 ohms, go to next step.
  4. Disconnect Automatic Temperature Control (ATC) module connector (if equipped). Check, clean and repair connections as needed. If resistance is more than 5 ohms, replace ATC unit. If resistance is less than 5 ohms, repair Yellow/Black wire between BCM Black connector and dimmer switch connector for short to ground.
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