DTC 2001
DTC 2001-2054 or 202A-202E
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (Diagnostic System Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Strategy Based Diagnosis) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Diagnostic Procedure Instructions) provides and overview of each diagnostic category.
DTC Descriptors
DTC 2001 to DTC 2054
- Internal Electronic Performance 1
DTC 200A to DTC 202E
- Internal Electronic Performance 1
Circuit/System Description
The passenger presence system (PPS) is used to monitor the pressure profile of any occupant that is sitting in the front outboard passenger seat and communicates 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 DTC 2001-2054 or DTC 202A-2-2E within itself, the PPS will communicate to the SDM through a dedicated serial data circuit that a PPS fault is present. The SDM will set DTC B0081 indicating a problem within the PPS and suppress the deployment of the I/P module and illuminate the AIR BAG indicator.
Conditions for Running the DTC
Ignition voltage is between 9-16 volts
Conditions for Setting the DTC
The PPS has detected an internal fault.
Action Taken When the DTC Sets
* The PPS will set a DTC and then communicate with the SDM.
* The SDM will set DTC B0081.
* The SDM disables the I/P module deployment loop.
* The PPS will illuminate the passenger air bag status OFF indicator.
* The SDM requests the instrument panel cluster (IPC) to illuminate the AIR BAG indicator.
Conditions for Clearing the DTC
* The condition for setting the DTC no longer exists.
* A history DTC will clear once 100 malfunction-free ignition cycles have occurred.
Reference Information
Schematic Reference
SIR Schematics ([1][2]Air Bag Systems)
Connector End View Reference
Component Connector End Views (Connector Views)
Description and Operation
SIR System Description and Operation (Description and Operation)
Electrical Information Reference
* Circuit Testing (Circuit Testing)
* Connector Repairs (Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (Wiring Repairs)
Scan Tool Reference
Control Module References (Programming and Relearning) for scan tool information
Circuit/System Verification
Important: When removing connectors inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected.
* PPS module
* PPS module wiring harness
1. Verify that the connector from the seat harness to the ECU and the sensor mat pigtail to the ECU are fully seated.
• If connection is not fully seated, make the connection and verify that the DTC goes history, if the DTC stays current then replace the PPS module.
2. Verify DTC 1066-1068 is not set in the PPS module.
• If any of these DTCs are set, refer to DTC 1066-1068 (DTC 1066).
3. Verify that DTC 2001-2054 or 202A-202E is not set or has been set in the PPS module.
• If any of these DTCs are set, replace the PPS module.
Repair Instructions
Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.
Inflatable Restraint Passenger Seat Suppression Module Replacement (UD0) (Service and Repair)
Control Module References (Programming and Relearning) for PPS module replacement, setup, and programming