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Home >> Chevrolet >> 1997 >> Corvette Standard >> Repair and Diagnosis (Single Page) >> Body & Frame >> Body, Cab Control Systems >> Body Control Module >> Diagnosis & Repair >> DTC B2735: Pass-Key(R) Programming Mode Active >> Diagnostic Aids
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Diagnostic Aids

  1. If there is a short or open in circuit No. 1073 (White/Black wire) or No. 1074 (Purple/White wire) between BCM and ignition switch, BCM will not be able to accept a valid PASS-Key(R) code when program mode is activated. Vehicle will exhibit a no-crank condition.
  2. If DTC B2722 or B2723 exists, diagnose this DTC first. These DTCs will affect BCM's ability to properly read a PASS-Key(R) resistance value.
  3. If key resistor pellet is incorrect, there will be no BCM outputs to theft deterrent relay or PCM for about 3 minutes. If a key (even a proper PASS-Key(R)) is inserted or ignition is turned on again, 3 minutes timeout period will reset. If battery is disconnected, timeout period will be reset when battery is reconnected.
  4. Clean key resistor contacts thoroughly. Check for poor connections at BCM and ignition lock cylinder. A poor connections may cause an open, an incorrect PASS-Key(R) resistance or an intermittent malfunction.
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