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HOMESERVICE MANUALSBUICK2006ALLURE CXSREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTANTI-THEFT SYSTEMSTHEFT DETERRENT SYSTEMDIAGNOSTIC INFORMATION AND PROCEDURESDTC P1631TEST DESCRIPTION
2006 Buick Allure CXS

Test Description

2006 Buick Allure CXSSECTION Test Description

The numbers below refer to the step numbers on the diagnostic table.

  1. 2:  Verifies if the condition for setting DTC B2960 is present.
  2. 3:  To set this code, the password that the PCM has learned does not agree with the password being received from the BCM. This condition can occur if the BCM has been replaced and the programming theft deterrent system components procedure has not been performed.
  3. 5:  If the PCM resets the DTC after the programming theft deterrent system components procedure has been performed, the BCM is malfunctioning.
DTC P1631 Test

Step Action Yes No
Schematic Reference: Theft Deterrent System Schematics 
Connector End View Reference: Theft Deterrent System Connector End Views 
1 Did you perform the Diagnostic System Check - Vehicle? Go to Step 2  Go to Diagnostic System Check - Vehicle in Vehicle DTC Information
2  Is DTC B2960 set as a current code? Go to DTC B2960  Go to Step 3 
3 
IMPORTANT: If a 10-Minute or 30-Minute Relearn Procedure is performed, all keys not learned at that time will be erased and will not be recognized. Perform the Adding Keys procedure on all keys or instruct the customer how to perform the Adding Keys procedure. Refer to Adding Keys (Domestic)  or Adding Keys (Export including Canada) .
Perform the Programming Theft Deterrent System Components procedure. Refer to Programming Theft Deterrent System Components .Is the procedure complete?		 Go to Step 4  -
4
  1. Use the scan tool in order to clear the DTCs.
  2. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text.
Does the DTC reset?		 Go to Step 5  System OK
5 
IMPORTANT: If a 10-Minute or 30-Minute Relearn Procedure is performed, all keys not learned at that time will be erased and will not be recognized. Perform the Adding Keys procedure on all keys or instruct the customer how to perform the Adding Keys procedure. Refer to Adding Keys (Domestic)  or Adding Keys (Export including Canada) .
Replace the body control module (BCM). Refer to Control Module References in Computer/Integrating Systems for replacement, setup and programming.Did you complete the replacement?		 Go to Step 6  -
6
  1. Use the scan tool in order to clear the DTCs.
  2. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text.
Does the DTC reset?		 Go to Step 2  System OK
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.