PRE-RELEASE
DTC B0081 (SDM)
| DTC B0081 (SDM) |
| Diagnostic Instructions |
| • |
Perform the
Diagnostic System Check - Vehicle
prior to using this diagnostic procedure.
|
|
| • |
Review
Strategy Based Diagnosis
for an overview of the diagnostic approach.
|
|
| • |
Diagnostic Procedure Instructions
provides an overview of each diagnostic category.
|
|
| DTC Descriptors |
DTC B0081 00
Passenger Presence Module Malfunction
DTC B0081 3A
Passenger Presence Module Incorrect Component Installed
| Circuit/System Description |
When the ignition is turned ON, the inflatable restraint sensing and diagnostic module (SDM) and the passenger presence module perform tests to diagnose critical malfunctions. Upon a successful power-up mode the SDM will illuminate both PASSENGER AIRBAG ON/OFF indicators. If the SDM detects a fault in the passenger presence module, it may disable the passenger instrument panel air bag deployment loop, set DTC B0081 00 or DTC B0081 3A and illuminate the AIRBAG indicator.
| Conditions for Running the DTC |
Ignition voltage is between 9-16 V.
| Conditions for Setting the DTC |
B0081 00
The SDM has received a fault present message from the passenger presence module.B0081 3A
The SDM has received a message from the passenger presence module indicating a vehicle and passenger presence module mismatch.| Action Taken When the DTC Sets |
| • |
The SDM requests the instrument cluster to illuminate the AIR BAG indicator.
|
|
| • |
The passenger instrument panel air bag deployment loop will be disabled.
|
|
| Conditions for Clearing the DTC |
| • |
The condition responsible for setting the DTC no longer exists.
|
|
| • |
A history DTC will clear once 100 malfunction-free ignition cycles have occurred.
|
|
| Diagnostic Aids |
| • |
If either the SDM or PPS were replaced verify that the correct part numbers were used for the vehicle application.
|
|
| • |
If this DTC is set as either current or history it may have been caused by an electronic device. If an electronic device (Computers, MP3 Players, Cell Phones, Diagnostic Scan Tool, etc.) was placed on the passenger seat the passenger presence module may command the passenger air bag indicator to turn on and/or command the passenger seat belt indicator to turn on. Make sure there are no objects on the passenger seat and clear the DTCs. If this DTC returns then perform this diagnostic. If the DTC does not reset there is no further work needed on the passenger presence system.
|
|
| • |
If this DTC is set as either current or history it may have been caused by an aftermarket seat heater. The aftermarket seat heater may command the passenger air bag indicator to turn on and/or command the passenger seat belt indicator to turn on. Remove the aftermarket seat heater from the passenger seat and clear the DTCs. If this DTC returns then perform this diagnostic. If the DTC does not reset there is no further work needed on the passenger presence system.
|
|
| Reference Information |
Schematic Reference
SIR Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
SIR System Description and Operation
Electrical Information Reference
| • |
Circuit Testing
|
|
| • |
Testing for Intermittent Conditions and Poor Connections
|
|
| • |
Connector Repairs
|
|
| • |
Wiring Repairs
|
|
Scan Tool Reference
Control Module References for scan tool information
| Circuit/System Verification |
| Note | ||
| • |
This system is serviced as a kit (seat foam, module and/or sensing mat). Perform a passenger presence system preload procedure whenever a component is replaced. Refer to
Passenger Presence System Programming and Setup
.
|
|
| • |
Both SDM and passenger presence module set DTC B0081 but with different symptoms bytes. Therefore it is important to identify which module has set the DTC B0081. Use the symptom bytes as a way of identify the correct module to diagnose.
|
|
| 1. |
Verify that DTC B1001 is not set in the SDM.
|
|
| 2. |
Verify that DTC B0074, B101D, or B101E is not set in the passenger presence module.
|
|
| 3. |
Verify that DTC B0081 00 is not set in the SDM |
|||||||
| 4. |
Verify that DTC B0081 3A is not set in the SDM. |
|||||||
| 5. |
All OK.
|
|
| Repair Instructions |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for passenger presence system and SDM replacement, programming and setup
