DTC B1015. Cadillac SRX 2007

For 1990-2009 cars only

Makes 🢒 Cadillac 🢒 2007 🢒 SRX 🢒 DTC 🢒 DTC B1015

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 Descriptor

DTC B1015 : Vehicle Identification Number (VIN) Information Error

After a loss of battery power has been restored, the theft deterrent control module will perform a check on the stored vehicle identification number (VIN). If the VIN is CORRECT, the theft deterrent control module will run the VIN Timer for a programmable length of time, typically 10 minutes. The theft deterrent control module will send a message via the serial data circuit to the instrument panel cluster (IPC) to illuminate the SECURITY indicator. After the VIN Timer has timed out, the security indicator will turn OFF. If the VIN is INCORRECT, the theft deterrent control module will send the fuel disable password to the engine control module (ECM), via the serial data circuit. The immobilizer system considers this to be a tamper and will not allow the vehicle to start. The theft deterrent control module will send a message via the serial data circuit to the IPC to flash the SECURITY indicator.

Substitution detection is based on correct response from the following modules: instrument panel cluster (IPC), export body control module (XBCM), driver door module (DDM), passenger door module (PDM). The modules compare their VIN to that stored in the VIN master on every ignition ON cycle and report their status to the theft deterrent module.

Conditions for Running the DTC

Ignition ON

Conditions for Setting the DTC

•	The VIN check flag of the theft deterrent control module is true.

•	The theft deterrent control module has determined that the battery has been reconnected after a battery disconnect.

Action Taken When the DTC Sets

•	The vehicle will not start.

•	The theft deterrent control module sends the fuel disable message via the serial data circuit to the ECM.

•	The theft deterrent control module will run the VIN Timer for a programmable length of time, typically 10 minutes.

•	The theft deterrent control module sends a message to the IPC to illuminate the SECURITY indicator.

Conditions for Clearing the DTC

•	The theft deterrent control module clears the current DTC when the correct VIN information is present.

•	The DTC can be cleared by using a scan tool.

Reference Information

Electrical Information Reference

•	Circuit Testing

•	Connector Repairs

•	Testing for Intermittent Conditions and Poor Connections

•	Wiring Repairs

Scan Tool Reference

•	Scan Tool Data List

•	Scan Tool Data Definitions

Circuit/System Verification

With a scan tool, verify the stored VIN in the body control module (BCM) matches the actual VIN.

⇒	If VIN does not match, perform the BCM Programming/RPO Configuration procedure. If the BCM VIN does not match the actual VIN after programming, replace the BCM.

With a scan tool, verify the stored VIN in the following modules:

•

IPC

•

XBCM

•

DDM

•

PDM

⇒	If any modules VIN does not match the actual VIN perform the setup procedure for that module. If VIN does not match after setup, replace the module.

If all modules VIN match the actual VIN, replace the TDM.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for BCM, XBCM, TDM, IPC, DDM, PDM replacement, setup, and programming