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Home >> Oldsmobile >> 1998 >> Intrigue Base >> Repair and Diagnosis >> Body & Frame >> Body, Cab Control Systems >> Body Control Module >> Diagnostic Tests >> DTC B2805: RFA Programming/Diagnostic Mode Message Not Received >> Diagnostic Procedures
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Diagnostic Procedures

  1. If BCM diagnostic system check was performed, go to next step. If BCM diagnostic system check was not performed, see procedures in BCM DIAGNOSTIC SYSTEM CHECK  .
  2. Turn ignition off. Disconnect BCM harness connector C1. Using test light connected to ground, backprobe BCM harness connector terminal C15 (Black wire). See WIRING DIAGRAMS  . If test light illuminates, go to next step. If test light does not illuminate, go to step 4).
  3. Replace BCM. Perform new BCM setup procedure. See procedures in BCM PROGRAMMING  . After programming BCM, go to step 7).
  4. Disconnect Remote Control Door Lock Receiver (RCDLR) connector. Using DVOM, check continuity of circuit No. 917 (Black wire). If continuity is present, go to next step. If continuity is not present, go to step 6).
  5. Replace RCDLR. After replacing RCDLR, go to step 7).
  6. Repair poor connection or open in circuit No. 917 (Black wire). After repairs, go to next step.
  7. Turn ignition off. Reinstall all components and connectors. Turn ignition on. Using scan tool, clear DTCs. After clearing DTCs, perform BCM DIAGNOSTIC SYSTEM CHECK  .
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