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DTC U2005: Transmitted SPI Data Output High: Testing

  1. If body function controller (BFC) diagnostic system check has been performed, go to next step. If body function controller (BFC) diagnostic system check has not been performed, go toBODY FUNCTION CONTROLLER (BFC) DIAGNOSTIC SYSTEM CHECK  under SYSTEM TESTS.
  2. Disconnect IPC Gray 24-pin connector. Disconnect BFC Pink 24-pin connector C3. Using DVOM, measure voltage between BFC connector C3 terminal A3 (Yellow wire) and ground. See Figure . If zero volts exists, go to step  4 . If greater than zero volts exists, go to next step.
  3. Repair short to voltage in Yellow wire between BFC connector C3 and IPC. After repairs, go to step  11 .
  4. Reconnect BFC connector C3. Using scan tool, read SPI data output line. If SPI data output is HIGH, go to step  8 . If SPI data output is not HIGH, go to next step.
  5. Check for a poor connection at IPC connector terminal A9 (Yellow wire). If a poor connection exists, go to next step. If connection is okay, go to step  7 .
  6. Repair poor connection at IPC connector terminal A9 (Yellow wire). After repairs, go to step  11 .
  7. Replace IPC. See appropriate ANALOG INSTRUMENT PANELS article. After repairs, go to step  11 .
  8. Check for a poor connection at BFC connector C3 terminal A3 (Yellow wire). If a poor connection exists, go to next step. If connection is okay, go to step  10 .
  9. Repair poor connection at BFC connector C3 terminal A3 (Yellow wire). After repairs, go to step  11 .
  10. Replace BFC. See BODY FUNCTION CONTROLLER (BFC)  under REMOVAL & INSTALLATION. After repairs, go to next step.
  11. Reconnect all disconnected components and connectors. Clear DTCs. Perform BODY FUNCTION CONTROLLER (BFC) DIAGNOSTIC SYSTEM CHECK  under SYSTEM TESTS.
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