2010 Cadillac CTS Sedan AWD V6-3.6L Page 490

2010 Cadillac CTS Sedan AWD V6-3.6L Page 490

* A history DTC will clear once 50 consecutive malfunction-free ignition cycles have occurred.

Schematic Reference

OnStar Schematics (See: Accessories and Optional Equipment/Diagrams/Electrical Diagrams/OnStar Schematics)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

Description and Operation

OnStar Description and Operation (See: Accessories and Optional Equipment/Description and Operation/OnStar Description and Operation)

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)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Testing

1. Verify the Bluetooth (R) antenna is properly connected to the CIM and is not damaged.

瀚慖f the antenna is disconnected or damaged, repair or replace as necessary.

2. Ignition ON, verify the DTC B2485 is not set.

瀚慖f the DTC is set, replace the Bluetooth (R) antenna. Clear the DTC and cycle the ignition OFF then back ON. If the DTC resets as

current, replace the CIM.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Wireless Communication Interface Antenna Replacement (See: Accessories and Optional Equipment/Antenna/Service and Repair)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for CIM replacement, setup, and programming

B2494

DTC B2494

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 B2494 02

- Power Liftgate Handle Switch Circuit Short to Ground

Diagnostic Fault Information