2010 Cadillac Truck SRX FWD V6-3.0L Page 549

2010 Cadillac Truck SRX FWD V6-3.0L Page 549

The telematics communication interface control module and/or the navigation radio detect a short to ground on the GPS antenna signal circuit.

B2462 04

The telematics communication interface control module and/or the navigation radio detect an open/high resistance on the GPS antenna signal

circuit.

Action Taken When the DTC Sets

Onstar - Telematics Communication Interface Control Module

* The OnStar(R) status LED turns red.

* The OnStar(R) Call Center cannot locate the vehicle.

Navigation Radio

* The radio uses the last reported position and the vehicle speed signal to calculate the vehicle position.

* Route guidance may be inaccurate.

* Turn by turn navigation may be inaccurate or inoperative.

Conditions for Clearing the DTC

* The condition responsible for setting the DTC no longer exists.

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

Reference Information

Schematic Reference

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

* Radio/Navigation System Schematics (See: Accessories and Optional Equipment/Diagrams/Electrical Diagrams/Radio/Navigation System

Schematics)

Connector End View Reference

* Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

* Antenna Coaxial/Connector Cable Identification Table (See: Accessories and Optional Equipment/Antenna/Antenna, Radio/Antenna

Cable/Application and ID)

Description and Operation

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

* Radio/Audio System Description and Operation (See: Accessories and Optional Equipment/Description and Operation/Radio/Audio System

)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

Scan Tool Reference

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

Special Tools

EL-49903 GM OnStar Antenna Diagnostic Tool Kit

Circuit/System Verification

Note: The following verification requires the vehicle to be outside with an unobstructed view of the southern sky. Allow 5 minutes after turning

key on for the GPS satellites to acquire vehicle signal.

1. Ignition ON, wait 5 minutes, then contact the OnStar call center consultant by pressing the blue OnStar button. A call center consultant

should answer the call, verifying the vehicle OnStar system is functioning and the consultant can locate the vehicle.

瀚慖f the OnStar system is not functioning and the vehicle is not equipped with a navigation radio, refer to OnStar Malfunction without