DTC B389A
- Make
- Vauxhall
- Model
- Astra J
- Section
- Theft Deterrent › Other Information › DTC B389A
DTC B389ADiagnostic 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 provide an overview of each diagnostic category. |
DTC Descriptors
| DTC B389A 00: Environment Identification Malfunction - Received by BCM |
Circuit/System Description
When certain modules are programmed and configured during installation, the module learns a specific immobilizer identifier which is unique to the vehicle. The identifier is used to prevent swapping modules between vehicles. The body control module (BCM) is the keeper of the environment identifier. The instrument cluster, electronic brake control module (EBCM), HVAC control module, inflatable restraint sensing and diagnostic module (SDM), engine control module (ECM), each learn the identifier during their configuration process. During vehicle operation, each of these modules compare their identifier to the BCM. If the identifiers match, vehicle starting is allowed. If an identifier does not match, vehicle starting is disabled.
Conditions for Running the DTC
The ignition is ON.
Conditions for Setting the DTC
An incorrect environment identifier is received by the BCM.
Action Taken When the DTC Sets
| • | The security indicator in the instrument cluster will illuminate. |
| • | Vehicle starting will be disabled. |
Conditions for Clearing the DTC
A current DTC will be cleared when the module learns an environment identifier.
Reference Information
Schematic Reference
Theft Deterrent System Schematics
Connector End View Reference
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
Note: Make sure to fix DTC B3902 first that has set in the following modules: Instrument Cluster, SDM, ECM, HVAC Control Module, EBCM, and steering column lock control module (if equipped) before proceeding to the following diagnosis regarding the BCM.
Perform the Programming and Setup procedure for the K9 Body Control Module. Verify the DTC does not reset after programming.
If the DTC resets, replace the K9 Body Control Module.Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for control module replacement, programming and setup
Parts & tools for this job For Vauxhall Astra
- TOOLOBD2 scannerSearch: OBD2 scanner
- TOOLDigital multimeterSearch: automotive digital multimeter
- TOOLBack-probe test leadsSearch: back probe test leads
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