2010 Cadillac CTS Sedan AWD V6-3.6L Page 210
3. Turn the ignition OFF and wait 5 seconds.
4. Repeat steps 2-4 two more times for a total of 3 cycles or 30 minutes.
5. Turn the ignition ON. The start disable will now be cleared.
6. Using the Red Emergency Button, notify the OnStar advisor that the Ignition Block on the vehicle has been cleared and to update the account
status.
Without Y41
DTC B302A (without Y41)
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC B302A 00
- Telematic Requested Immobilization
Circuit/System Description
As part of the vehicle telematics enhanced services, a request may be sent to the theft deterrent module (TDM) to disable vehicle starting. If a valid
message is received by the TDM requesting that starting be disabled, the start enable message will not be sent to the engine control module (ECM).
Conditions for Setting the DTC
A valid start disable from telematics will set DTC B302A only as a history DTC.
Action Taken When the DTC Sets
Vehicle starting will be suspended and the security indicator will be illuminated.
Conditions for Clearing the DTC
* A current DTC will clear when the telematic start disable request is no longer seen.
* A history DTC will clear after 100 ignition cycles in which the telematic start disable request is not seen.
Diagnostic Aids
DTC B302A is only an indicator that a start disable request has been received from the vehicle telematics system and does not indicate a fault in the
immobilizer system. B302A will only set as a history DTC.
Reference Information
Schematic Reference
Immobilizer Schematics (See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Diagrams/Electrical Diagrams/Immobilizer
Schematics)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Immobilizer Description and Operation (without Y41) (See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Description and
Operation/Immobilizer Description and Operation (Without Y41))Immobilizer Description and Operation (with Y41) (See: Accessories and
Optional Equipment/Antitheft and Alarm Systems/Description and Operation/Immobilizer Description and Operation (With Y41))
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit
Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/Wiring Repairs)
