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 profile of any occupant that is sitting in the front passenger seat and communicates the profile classification to the inflatable restraint sensing and diagnostic module (SDM). The SDM will either enable or suppress the deployment of the passenger instrument panel air bag based on the profile classification of the occupant. If the passenger presence module detects DTC 2001-2054 or DTC 202A-2-2E within itself, the passenger presence module 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 passenger instrument panel air bag and illuminate the AIR BAG indicator.
Conditions for Running the DTC
Ignition voltage is between 9-16 volts
Conditions for Setting the DTC
The passenger presence module has detected an internal fault.
Action Taken When the DTC Sets
* The passenger presence module will set a DTC and then communicate with the SDM.
* The SDM will set DTC B0081.
* The SDM disables the passenger instrument panel air bag deployment loop.
* The passenger presence module 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 End Views By Name)
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.
* Passenger presence module
* Passenger presence module wiring harness
1. Verify that the connector from the seat harness to the passenger presence module and the passenger presence sensor mat pigtail to the passenger presence module 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 passenger presence module.
2. Verify DTC 1066-1068 is not set in the passenger presence 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 passenger presence module.
• If any of these DTCs are set, replace the passenger presence module.
Repair Instructions
Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.
Control Module References (Programming and Relearning)for passenger presence module replacement, setup, and programming