PRE-RELEASE
DTC B1001
| DTC B1001 |
| Diagnostic Instructions |
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Perform the
Diagnostic System Check - Vehicle
prior to using this diagnostic procedure.
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Review
Strategy Based Diagnosis
for an overview of the diagnostic approach.
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Diagnostic Procedure Instructions
provides an overview of each diagnostic category
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| DTC Descriptor |
DTC B1001 00
Option Configuration
| Circuit/System Description |
The inflatable restraint sensing and diagnostic module (SDM) stores a primary data key, which is a 4-digit number. When the ignition is turned ON, the SDM compares this information to the information stored in the body control module (BCM) over the serial data communication circuit. If there is a mismatch between the information stored in the SDM and BCM, DTC B1001 will set.
| Conditions for Running the DTC |
System voltage is between 9-16 V.
| Conditions for Setting the DTC |
The 4-digit Primary Data Key stored in the SDM does not match the 4 digits stored in the BCM.
| Action Taken When the DTC Sets |
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The SDM requests the instrument cluster to illuminate the AIR BAG indicator.
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The SDM disables all deployments.
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| Conditions for Clearing the DTC |
The last 4-digit Primary Data Key in the SDM matches the last 4 digits stored in the BCM.
| Diagnostic Aids |
This DTC is an indication that an incorrect SDM is installed in the vehicle, or that the SDM and/or the BCM was replaced without reprogramming the BCM with the new information.
| 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
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Circuit Testing
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Testing for Intermittent Conditions and Poor Connections
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Wiring Repairs
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Connector Repairs
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Scan Tool Reference
Control Module References for scan tool information
| Circuit/System Verification |
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Cycle the ignition after performing the Setup SDM Primary Key procedure in the BCM. This enables the BCM to read the new SDM primary Key value. |
Verify the scan tool SDM Primary Key Status is Valid in the BCM.
