Service Information

Volt

DTC B3105

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 B3105 00: Keyless Entry System Transmitters

Circuit/System Description

The body control module (BCM) monitors the number of keyless entry transmitters programmed. Until at least one transmitter is programmed, the BCM determines a malfunction condition exists.

Conditions for Running the DTC

The BCM has been set up without transmitters being programmed.

Conditions for Setting the DTC

No keyless entry transmitter programmed to the BCM.

Action Taken When the DTC Sets

The keyless entry system is inoperative.

Conditions for Clearing the DTC

A current DTC is cleared when at least one transmitter has been programmed to the BCM.

Reference Information

Electrical Information Reference

•	Circuit Testing

•	Connector Repairs

•	Testing for Intermittent Conditions and Poor Connections

•	Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

Verify that the transmitter is a correct transmitter for the vehicle. This can be accomplished by comparing the part number printed on the transmitter to the appropriate part number in the parts catalogue.

⇒	*If the transmitter is incorrect*

Replace the transmitter.

⇓	*If the transmitter is correct*

Program the transmitter. Refer to Key with Integrated Transmitter Programming .
Verify the transmitter has successfully completed the programming procedure.

⇒	*If the transmitter does not program successfully*