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Test 8F - Repairing Open In Panel Lights Feed Circuit

NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION  in this article. For wiring diagrams, see WIRING DIAGRAMS  in this article.
CAUTION: Always turn ignition off prior to disconnecting or connecting any module connector.
  1. Reinstall fuse No. 9. Turn ignition off. Disconnect Natural Body Control Module (BCM) connector. BCM is located behind center console. Check connector, and clean or repair connector as necessary. Perform TEST VER-1B  . If connector is okay, go to next step.
  2. Using DRB in voltmeter mode, check voltage on fused park light relay output circuit (Tan wire) at Natural BCM connector terminal No. 16. If voltage is more than 10 volts, go to step 5). If voltage is less than 10 volts, go to next step.
  3. Check voltage on park light relay output circuit (Black/Yellow wire) at fuse No. 9 connector. If voltage is more than 10 volts, repair open Tan wire between fuse No. 9 connector and BCM connector. Perform TEST VER-1B. If voltage is less than 10 volts, go to next step.
  4. Disconnect jumper wire at power distribution center. Using an external ohmmeter, check resistance of park light relay output circuit (Black/Yellow wire) between fuse No. 9 connector and park light relay connector. If resistance is more than 5 ohms, repair open Black/Yellow wire. Perform TEST VER-1B. If resistance is less than 5 ohms, replace park light relay. Perform TEST VER-1B.
  5. Disconnect left pod switch connectors. Using DRB in ohmmeter mode, check resistance of ground circuit (Black wire) at Black left pod switch connector terminal No. 6. If resistance is more than 5 ohms, repair open Black wire. Perform TEST VER-1B. If resistance is less than 5 ohms, go to next step.
  6. Check resistance of dimmer switch signal circuit (Orange/Black wire) at left pod switch connector terminal No. 1. If resistance is less than 5 ohms, repair short to ground in Orange/Black wire. Perform TEST VER-1B  . If resistance is more than 5 ohms, go to next step.
  7. Using an external ohmmeter check resistance between terminals No. 1 (Orange/Black wire) and No. 6 (Black wire) at left pod switch. If while moving dimmer control from low to high, resistance does not range from less than 2000 ohms to more than 9000 ohms, replace left pod switch. Perform TEST VER-1B. If while moving dimmer control from low to high, resistance ranges from less than 2000 ohms to more than 9000 ohms, go to next step.
  8. Reconnect left pod switch connectors. Using DRB in ohmmeter mode, check resistance of dimmer switch signal circuit (Orange/Black wire) at Natural BCM connector terminal No. 20. If while moving dimmer control from low to high, resistance does not range from less than 2000 ohms to more than 9000 ohms, repair open Orange/Black wire between BCM and left pod switch. Perform TEST VER-1B. If while moving dimmer control from low to high, resistance ranges from less than 2000 ohms to more than 9000 ohms, replace BCM. Perform TEST VER-1B.
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