DTC 1058-1062. GMC Truck Savana

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 2006 🢒 Savana - AWD 🢒 Restraints 🢒 SIR 🢒 DTC 1058-1062

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 a malfunction with the communication circuit then the PPS will then set a DTC within the PPS. The SDM will then set DTC B0092 indicating a problem within the PPS.

DTC Descriptors

This diagnostic procedure supports the following DTCs:

•	DTC 1058 PPS Communication Fault

•	DTC 1059 PPS Communication Fault

•	DTC 1060 PPS Communication Fault

•	DTC 1061 PPS Communication Fault

•	DTC 1062 PPS Communication Fault

Conditions for Running the DTC

Ignition 1 voltage is within the normal operating voltage range.

Conditions for Setting the DTC

The PPS has never established or lost communications with the SDM.

Action Taken When the DTC Sets

•	The PPS will set a DTC.

•	The SDM will set DTC B0092.

•	The SDM disables the I/P module deployment loop.

•	The SDM commands the AIR BAG indicator ON via Class 2 serial data.

Diagnostic Aids

This DTC is an indication that the communication circuit between the SDM and the PPS has problems. The following are possible causes of the malfunction:

•	An open, short to voltage, or high resistance in the communication circuit between the SDM and the PPS

•	The PPS connector

•	The SDM connector

•	A malfunctioning PPS

•	A malfunctioning SDM

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.

This step inspects the PPS and the vehicle wiring harness for damage or corrosion.

This step inspects the SDM and the vehicle wiring harness for damage or corrosion.

This step tests the PPS communication circuit between the SDM and the PPS for an open, or high resistance, or a short to voltage.

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	Connect the scan tool. Go to the passenger presence system (PPS) menu, then retrieve the DTCs. Refer to Passenger Presence System Displaying Code Procedure . Does DTC 1058-1062 set as current?	Go to Step 3	Go to Step 11
3	Turn OFF the ignition. Disconnect the PPS module connector located under the front passenger seat. Refer to Inflatable Restraint Passenger Presence System Replacement - Front . 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 4	Go to Step 5
4	If the PPS connector is damaged, the PPS must be replaced. Refer to Inflatable Restraint Passenger Presence System Replacement - Front . 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?	Go to Step 11	--
5	Turn OFF the ignition. Disconnect the inflatable restraint sensing and diagnostic module (SDM) connector. Refer to Control Module References for replacement, setup, and programming. Inspect the SDM connector for damage or corrosion that may cause a malfunction in the PPS communication circuit. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition?	Go to Step 11	Go to Step 6
6	If the component side of the SDM connector is damaged, the SDM must be replaced. Refer to Control Module References for replacement, setup, and programming. If the harness side of the SDM connector is damaged, replace the harness side of the connector. Refer to Connector Repairs . Did you find and correct the condition?	Go to Step 11	Go to Step 7
7	Test the PPS communication circuit between the SDM and the PPS for a short to voltage. Refer to Circuit Testing and Wiring Repairs . Test the PPS communication circuit between the SDM and the PPS for an open or high resistance. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition?	Go to Step 11	Go to Step 8
8	Turn OFF the ignition. Replace the SDM. Refer to Control Module References for replacement, setup, and programming. Did you complete the replacement?	Go to Step 9	--
9	Reconnect all components. Use the scan tool in order to clear the DTCs. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text. Does the DTC reset?	Go to Step 10	System OK
10	Turn OFF the ignition. Important: The PPS is a calibrated system. The PPS must be check for preloads after replacement. 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?	Go to Step 11	--
11	Verify that all components, connectors and connector position assurances (CPA)s are properly mounted. Use the scan tool in order to clear the DTCs. 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