2007 RESTRAINTS Supplemental Inflatable Restraints -CTS
SIR Scan Tool Data List
Ignition ON/Engine OFF/Driver Seat Belt Buckled
Scan Tool Parameter Data List Units Displayed Typical Data Value
8-Digit GM Part Number Module 2 Information 8-digit number 16XXXXXX
Calibration ID Module 1 Information 4-digit number Varies
Component Serial Number Module 2 Information 4-digit number XXXX
Driver Belt Status changed this ignition cycle Inputs Yes/No Yes
Driver Seat Belt Status Inputs Buckled/Unbuckled Buckled
Driver Side Impact Sensor ID Module 1 Information 2-digit number 43
Electronic Front End Sensor ID Module 1 Information 2-digit number 51
Ignition Voltage Data Volts 12 volts
Julian Date of Build Module 1 Information 3-digit number Varies
Passenger Side Impact Sensor ID Module 1 Information 2-digit number 43
ROM ID Module 1 Information 4-digit number Varies
Vin Information Inputs Number Varies
Year Module Built Module 1 Information 4-digit number Varies
SCAN TOOL DATA DEFINITIONS
The SIR scan tool data definitions contain a brief description of all SIR related parameters available on the scan tool. The parameters that are available on the scan tool are listed below in alphabetical order.
8-Digit GM Part Number
The scan tool displays an 8-digit part number. This number is the GM part number that is stored within the SDM memory.
Calibration ID
The scan tool displays a 4-digit number. This calibration ID is the check sum of the SDM read only memory contents.
Component Serial Number The scan tool displays a 4-digit number. This number is the SDM serial number. Driver Belt Status Changed This Ignition Cycle The scan tool displays Yes or No. Driver seat belt has been buckled or unbuckled after the ignition is turned ON. Driver Seat Belt Status The scan tool displays Buckled or Unbuckled. The signal from the drivers seat belt switch indicates whether the driver seat is buckled or unbuckled. Driver Side Impact Sensor ID The scan tool displays a 2-digit ID number. The ID signal is sent to the SDM from the Driver SIS. Electronic Front End Sensor ID The scan tool displays a 2-digit ID number. The ID signal is sent to the SDM from the front end sensor. Ignition Voltage The scan tool displays 0-20 volts. The Ignition represents the system voltage measured by the SDM at its ignition feed. Julian Date of Build This displays the day of the year the module was built. Passenger Side Impact Sensor ID The scan tool displays a 2-digit ID number. The ID signal is sent to the SDM from the Passenger SIS. ROM ID The scan tool displays a 4-digit number. This number is the read-only memory (ROM) ID. VIN Information The scan tool displays a list. The Dash Integration Module (DIM) is programmed in the assembly plant with the last four digits of SDM part number and the VIN of the vehicle. Year Module Built
The scan tool displays what year the module was built.
DTC 1049 -1050 Circuit Description
The inflatable restraint passenger presence system (PPS) is used to monitor the pressure profile of any occupant that is sitting in the front outboard passenger seat and communicate the profile classification to the sensing and diagnostic module (SDM). The SDM will either enable or suppress the deployment of the instrument panel (I/P) module based on the profile classification of the occupant. If the PPS detects that the vehicle voltage is too low or high the PPS will then set a DTC within the PPS, then the PPS will communicate to the SDM through a non class 2 communications circuit that a PPS fault is present. The SDM will then set DTC B0092 indicating a problem within the PPS.
DTC Descriptors
This diagnostic procedure supports the following DTCs:
l DTC 1049 PPS System Fault
l DTC 1050 PPS System Fault
Conditions for Running the DTC
Ignition 1 voltage is within the normal operating voltage range.
Conditions for Setting the DTC
The PPS has detected supply battery voltage too low or too high.
Action Taken When the DTC Sets
l The PPS will set a DTC then communicate with the SDM via non class 2 circuit.
l The SDM will set DTC B0092.
l The SDM disables the I/P module deployment loop.
l The SDM commands the AIR BAG indicator ON via class 2 serial data.
Diagnostic Aids
DTC 1049 is an indication that the supply battery voltage (ignition 1) to the PPS too low and could be from corrosion and DTC 1050 is an indication that the supply battery voltage (ignition 1) to the PPS too high. The following are possible causes of the malfunction:
l A malfunctioning charging system
l High resistance in the PPS ignition 1 circuit
l The PPS connector
l A malfunctioning PPS Thoroughly inspect the wiring and the connectors. An incomplete inspection of the wiring and the connectors may result in a misdiagnosis, causing a part replacement with the reappearance of the malfunction. If an intermittent malfunction exists, refer to Testing for Intermittent Conditions and Poor Connections .
Test Description
The numbers below refer to the step numbers on the diagnostic table.
2: Inspect to see if DTC 1050 is set indicating that the supply battery voltage is
too high.
3: Inspect to see if DTC 1049 is set indicating that the supply battery voltage is
too low.
6: This step test's the PPS ignition 1 for high resistance or short to ground. DTC 1049 -1050
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
2 1. Connect the scan tool. 2. Go to the passenger presence system (PPS) menu, then retrieve the DTCs. Refer to Passenger Presence System Displaying Code Procedure. Does DTC 1050 set as current? Go to Diagnostic System Check -Vehicle Go to Step 3
3 Does DTC 1049 set as current? Go to Step 4 Go to Step 8
4 1. Turn OFF the ignition. 2. Disconnect the PPS module connector located under the front passenger seat. Refer to Inflatable Restraint Passenger Presence System Replacement -Front. 3. Inspect the component and harness side of the connector for the PPS for damage or corrosion that may cause the malfunction. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Does connector exhibits any signs of damage or corrosion? Go to Step 5 Go to Step 6
1. If the PPS connector is damaged, the PPS must be replaced. Refer to
5
6
7
8
9
10
Inflatable Restraint Passenger Presence System Replacement -Front.
2. If the wiring harness side of the PPS connector is damaged, replace the harness side of the connector. Refer to Connector Repairs .
Did you find and correct the condition? Test the PPS ignition 1 circuit for high resistance or short to ground. Refer to
Circuit Testing and Wiring Repairs . Did you find and correct the condition? Test the PPS ground circuit for high
resistance. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition?
1. Reconnect all components.
2. Use the scan tool in order to clear the DTCs.
3. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text.
Does the DTC reset?
1. Turn OFF the ignition.
IMPORTANT: The PPS is a calibrated system. The PPS must be check for preloads after replacement.
2. Replace the PPS. The PPS is only serviceable as PPS and seat bottom foam assembly. Refer to Control Module References for replacement, setup, and programming.
Did you complete the replacement?
1. Verify that all components, connectors and connector position assurances (CPA)s are properly mounted.
2. Use the scan tool in order to clear the DTCs.
3. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text.
Go to Step 10
Go to Step 10
Go to Step 10
Go to Step 9
Go to Step 10 -
Go to Step 7
Go to Step 8
System OK
-
DTC 1051 Circuit Description
The inflatable restraint passenger presence system (PPS) is used to monitor the pressure profile of any occupant that is sitting in the front outboard passenger seat and communicate the profile classification to the sensing and diagnostic module (SDM). The SDM will either enable or suppress the deployment of the instrument panel (I/P) module based on the profile classification of the occupant. If the PPS has been replaced the new PPS must run a preload test on the completed serviced seat before that vehicle is released back to the customer. This test assures that completed serviced seat does not add any pressure to the seat surface that could influence the pressure profile of any occupant that is sitting in the seat. This test must be performed on an empty seat. When a new PPS is installed a DTC will set indicating that a preload test needs to be preformed. If the PPS detects any preload DTC within the PPS, then the PPS will communicate to the SDM through a non class 2 communications circuit that a PPS fault is present. The SDM will then set DTC B0092 indicating a problem within the PPS.
DTC Descriptor
This diagnostic procedure supports the following DTC: DTC 1051 PPS Initialization/Preload Fault
Conditions for Running the DTC
Ignition 1 voltage is within the normal operating voltage range.
Conditions for Setting the DTC
The PPS will set a DTC when replaced.
Action Taken When the DTC Sets
l The PPS will set a DTC then communicate with the SDM via non Class 2 circuit.
l The SDM will set DTC B0092.
l The SDM disables the I/P module deployment loop.
l The SDM commands the AIR BAG indicator ON via Class 2 serial data.
Conditions for Clearing the DTC
l The condition responsible for setting the DTC no longer exists.
l You issue a scan tool CLEAR DTCs command.
l A history DTC will clear once 255 malfunction-free ignition cycles have occurred.
Diagnostic Aids
When a new PPS and seat bottom foam has been installed, a DTC 1051 will be set indicating that the preload test procedure must be run.
Test Description
The number below refers to the step number on the diagnostic table.
2: Inspect to see if DTC 1051 is set. DTC 1051
Step Action Yes No
Schematic Reference: SIR Schematics
1 Did you perform the Diagnostic System Check -Vehicle? Go to Step 2 Go to Diagnostic System Check -Vehicle
2 1. Connect the scan tool. 2. Go to the passenger presence system (PPS) menu, then retrieve the DTCs. Refer to Passenger Presence System Displaying Code Procedure. Does DTC 1051 set as current? Go to Passenger Presence System Preload Test Go to Step 3
3 Do DTCs 1052-1057 set as current? Go to DTC 1052, 1053, 1054, 1055, 1056, or 1057 Go to Step 4
4 1. Verify that all components, connectors and connector position assurances (CPA)s are properly mounted. 2. Use the scan tool in order to clear the DTCs. 3. 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
DTC 1052, 1053, 1054, 1055, 1056, OR 1057
Circuit Description
The passenger presence system (PPS) is divided up into 6 regions. When there is an unwanted force being applied to one or more PPS regions, the PPS will set a diagnostic trouble code (DTC). If the PPS detects any preload DTC within the PPS, then the PPS will communicate to the SDM through a non class 2 communications circuit that a PPS fault is present. The SDM will then set DTC B0092 indicating a problem within the PPS.
2007 Cadillac CTS
