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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 17 (Supplemental Inflatable Restraint System) >> Diagnostic Information and Procedures >> DTC 056 >> Test Description

Test Description

WARNING: This page is about a different car, the 2005 Buick LaCrosse and 2005 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.

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

  1. 2:  This step is requesting the PPS DTCs, checking to see if DTC 034 or DTC 036 is current.
DTC 056

Step Action Yes No
Schematic Reference: SIR Schematics 
Connector End View Reference: SIR 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 
  1. Turn ON the ignition, with the engine OFF.
  2. With a scan tool, request the PPS DTCs. Use the Passenger Presence System Flash Code Procedures  to retrieve PPS DTCs.
Does DTC 034 or DTC 036 set as current?		 Go to Diagnostic Trouble Code (DTC) List - Vehicle in Vehicle DTC Information Go to Step 3 
3 Was a new passenger presence system (PPS) service kit installed? Go to Step 4  Go to Step 5 
4 When a PPS service kit has been installed you must perform the rezeroing procedure. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.
Did you complete the rezeroing procedure?		 Go to Step 5  -
5
  1. Use the scan tool in order to clear the SIR and PPS DTCs.
  2. Perform the PPS rezeroing procedure. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.
  3. Cycle the ignition OFF then back ON, with the engine OFF.
  4. Use the Passenger Presence System Flash Code Procedures  to retrieve PPS DTCs.
Does DTC 056 reset?		 Go to Step 6  Go to Step 7 
6
  1. Turn OFF the ignition.
    2. IMPORTANT: The PPS, heated seat element, and seat bottom cushion is only serviced as a complete kit.
  2. Replace the PPS. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.
Did you complete the replacement?		 Go to Step 7  -
7
  1. Reconnect all SIR and PPS system components.
  2. Verify that all components, connectors, and connector position assurances (CPAs) are properly mounted.
  3. Use the scan tool in order to clear the SIR and PPS DTCs.
  4. 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
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