Alarm Module: Service and Repair

VEHICLE SECURITY MODULE (VSM)







Removal

CAUTION: Electronic modules are sensitive to static electrical charges. If exposed to these charges, damage to the module may result.

NOTE:
- Prior to the removal of the module, it is necessary to upload the module configuration information to a scan tool. This information must be downloaded into the new VSM after installation.
- The tire pressure monitoring system (TPMS) functionality is integral to the VSM.
- A new VSM is delivered in a "manufacturing mode" with 6 pre-set DTCs. A successful configuration of the VSM, then a successful TPMS sensor training, then a successful self-test including the clearing of all DTCs is required in order to clear the 6 manufacturing mode DTCs. The 6 manufacturing mode DTCs are:
- B2477 (Module Configuration Failure)
- B2868 (Left Front Tire Pressure Sensor Fault)
- B2869 (Right Front Tire Pressure Sensor Fault)
- B2870 (Right Rear Tire Pressure Sensor Fault)
- B2871 (Left Rear Tire Pressure Sensor Fault)
- C2780 (ECU in Manufacturer Sub-State)

1. NOTE: This step is necessary only if the VSM is being replaced.

Upload the module configuration information from the VSM into the scan tool.

2. Remove the RH A-pillar lower trim panel.
3. Remove the 2 VSM bolts.
4. Disconnect the 2 electrical connectors and remove the VSM.

Installation
1. Position the VSM and connect the 2 electrical connectors.
2. Install the VSM and the 2 bolts.
- Tighten the bolts to 6 Nm (53 lb-in).

3. NOTE: If the VSM is not being replaced, this is the last step that is necessary.

Install the RH A-pillar lower trim panel.

4. NOTE:
- When successful, this step provides the calibration necessary for the VSM operation and clears the DTC B2477. The clearing of this DTC indicates the calibration data has been successfully downloaded to the VSM
- If the module configuration upload/download (PMI) is successful, the RKE TICs will be downloaded into the new VSM and it will not be necessary to program them to the new VSM. In this event, it is not necessary to have all of the RKE transmitters present. It would be convenient, though, to test all of the transmitters before releasing the vehicle to the customer. If the module configuration upload/download is not successful, then all of the customer RKE transmitters must be programmed to the new VSM.

Download the VSM configuration information from the scan tool to the VSM.

5. NOTE: When successful, this step clears DTCs B2868, B2869, B2870 and B2871. The clearing of these DTCs indicates the VSM has recognized the tire pressure sensors during the training procedure.

Train the tire pressure sensors.

6. NOTE: DTC C2780 will not clear if any other DTCs are present in the VSM.

Carry out the VSM on-demand self-test by clearing the DTCs and then retrieving the DTCs to confirm all DTCs have been cleared.