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HOMESERVICE MANUALSPONTIAC1997GRAND PRIX GTP, 4D SEDANREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 7 (BODY CONTROL MODULE)DIAGNOSIS & REPAIRDTC B2735, PASS-KEY(R) PROGRAMMING MODE ACTIVENOTES
1997 Pontiac Grand Prix GTP, 4D Sedan

DTC B2735, Pass-Key(R) Programming Mode Active: Notes

1997 Pontiac Grand Prix GTP, 4D SedanSECTION Notes
WARNING: This page is about a different car, the 1997 Buick Regal and 1997 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.

PASS-Key(R) II detection circuit is completed when PASS-Key(R) II (with embedded resistor pellet) is inserted in ignition lock cylinder. When contacts in lock cylinder mate with contacts of resistor pellet, BCM compares resistance value of key pellet to valid resistance programmed into BCM.

If BCM determines that resistance value of key pellet is okay, BCM will use the class 2 serial data line to send a password to Powertrain Control Module (PCM). PCM will then energize theft deterrent relay and allow fuel delivery to engine.

When BCM is replaced, it must be programmed to accept resistance value of existing vehicle keys to allow PASS-Key(R) II operation. New BCM is programmed to accept first PASS-Key(R) II resistance value that it detects.

DTC B2735 will set when BCM is unable to detect a valid PASS-Key(R) II code during programming procedure, due to other malfunctions which are present (an open or short circuit). BCM will not end programming sequence. BCM will send a message to PCM to enable theft deterrent relay and to allow fuel delivery to engine.

If conditions for malfunction no longer exist, history DTC will clear after 100 consecutive ignition cycles. DTC B2723 will also clear when conditions no longer exist or scan tool is used to clear codes.

NOTE: If DTC B2735 is a history code, it indicates that BCM had previously entered and successfully completed programming mode. Clear DTCs and recheck system operation.
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