B0080

DTC B0080

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview) provides an overview of each diagnostic category



DTC Descriptors
DTC B0080 01
- Passenger Seat Position Sensor Circuit Short to Battery

DTC B0080 02
- Passenger Seat Position Sensor Circuit Short to Ground

DTC B0080 05
- Passenger Seat Position Sensor Circuit Short to Battery or Open

DTC B0080 08
- Passenger Seat Position Sensor Circuit Signal Invalid




Diagnostic Fault Information






Circuit/System Description

The inflatable restraint seat position sensor (SPS) is used to determine the proximity of a front driver or passenger seat position with respect to the frontal air bag. The SPS interfaces with the sensing and diagnostic module (SDM). The state of the SPS allows the SDM to disable stage 2 of the frontal air bag for a front seat that is forward of the forward/rearward point in seat track travel. The SPS is a hall effect sensor that is mounted on the outboard seat track of the driver and passenger seats. The seat track includes a metal bracket that shunts the SPS magnetic circuit creating 2 states of seat position. The shunted state represents a rearward seat position. The non-shunted state represents a forward position. The SPS provides 2 current ranges, one range for the shunted state and a second range for a non-shunted state. These 2 states are inputs to the SDM, state 1 (shunted) being the rearward threshold and state 2 (non-shunted) being the forward threshold. When the SDM receives input from a SPS that state 1 threshold is reached (seat is rearward), the SDM will not disable stage 2 deployment, if required by the deployment sensors. When state 2 threshold is reached (seat is forward), the SDM will disable stage 2 deployment on the side the seat is forward. The SDM monitors the SPS circuit and if a fault is detected, the SDM will set code B0080 and disable stage 2 frontal deployment.


Conditions for Setting the DTC

Ignition voltage is between 9-16 volts

B0080 01

The SDM detects the SPS circuit is shorted to voltage for 2 seconds

B0080 02

The SDM detects the SPS circuit is shorted to ground for 2 seconds

B0080 05

The SDM detects the SPS circuit is shorted to voltage or open for 2 seconds.

B0080 08

The SDM detects the SPS is invalid for 500 milliseconds.


Action Taken When the DTC Sets

* The SDM defaults the SPS to the seat forward threshold.
* The SDM requests the instrument panel cluster (IPC) to illuminate the AIR BAG indicator.



Conditions for Clearing the MIL/DTC

* The condition for setting the DTC no longer exists.
* A history DTC clears after 100 fault free ignition cycles.



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 (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)

Scan Tool Reference

Control Module References (Programming and Relearning) for scan tool information


Circuit/System Testing

Important: When removing connectors, inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected component/connector:


* Seat position sensor (SPS)

* SDM module

* Seat position sensor wiring harness connector

* SDM wiring harness connector




1. Ignition OFF, disconnect the harness connector at the SPS.
2. Test for less than 1 ohm between the low reference circuit terminal B and ground.

• If greater than the specified range, test the low reference an open/high resistance. If the circuit tests normal, replace the SDM.

3. Ignition ON, test for 1.2-2.0 volts between the signal circuit terminal A and ground.

• If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the SDM.
• If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the SDM.

4. If all circuits test normal, replace the SPS.



Repair Instructions

Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.

* SIR/SRS Wiring Repairs (Component Tests and General Diagnostics)
* Control Module References (Programming and Relearning) for SDM replacement, setup, and programming