Voice Recognition Malfunction
Voice Recognition Malfunction
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provide an overview of each diagnostic category.
Diagnostic Fault Information
Circuit/System Description
When voice recognition for the infotainment system is started, voice signals from the cellular phone microphone are passed through the telematics communication interface control module to the human machine interface module via the voice recognition audio circuits.
Diagnostic Aids
* Refer to the Owners Manual and/or the Navigation System Owners Manual for voice recognition use and commands.
* When the system recognizes the command the system will either perform the function or ask to confirm the choice by clearly saying "yes" or "no".
* If experiencing difficulty with the system recognizing a command, confirm that the command is correct.
* Background noise such as a climate control fan positioned on high, open windows, or very loud outside noises, can cause voice commands to be misunderstood.
Reference Information
Schematic Reference
OnStar Schematics OnStar Schematics
Connector End View Reference
Component Connector End Views Fuel Pump and Level Sensor Assembly
Description and Operation
OnStar Description and Operation OnStar
Electrical Information Reference
* Circuit Testing Circuit Testing
* Connector Repairs Connector Repairs
* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections
* Wiring Repairs Wiring Repairs
Scan Tool Reference
Control Module References Control Module References for scan tool information
Circuit/System Verification
1. Verify the OnStar (R) voice recognition system is operating normally.
• If the OnStar (R) voice recognition system is not operating normally.
Refer to OnStar Voice Recognition Malfunction OnStar Voice Recognition Malfunction.
• If the OnStar (R) voice recognition system is operating normally.
2. Ignition ON, infotainment system ON.
Note: Refer to the Owners Manual and/or the Navigation System Owners Manual for voice recognition use and commands.
3. Begin voice recognition for the infotainment system and clearly speak one of the available commands.
4. Verify the infotainment system responds correctly to the command.
• If the infotainment system does not respond correctly to the command.
1. Clearly speak a different command.
2. Verify the infotainment system responds correctly to the command.
• If the infotainment system does not respond correctly to any commands, refer to Circuit/System Testing.
• If the infotainment system responds correctly to the command.
3. Refer to the owners manual and/or the navigation system owners manual for hints on speaking commands.
• If the infotainment system responds correctly to the command.
5. All OK
Circuit/System Testing
1. Ignition OFF, disconnect the X2 harness connector at the K73 telematics communication interface module.
2. Test for less than 10 ohms between the low reference circuit terminal 12 and ground.
• If 10 ohms or greater
1. Ignition OFF, disconnect the X1 harness connector at the human machine interface module.
2. Test for less than 2 ohms in the low reference circuit end to end.
• If 2 ohms or greater, repair the open/high resistance in the circuit.
• If less than 2 ohms, replace the human machine interface module.
• If less than 10 ohms
3. Ignition ON, infotainment system ON.
4. Test for less than 1 V between the signal circuit terminal 6 and ground.
• If 1 V greater
1. Ignition OFF, disconnect the X1 harness connector at the human machine interface module. Ignition ON.
2. Test for less than 1 V between the signal circuit and ground.
• If 1 V or greater, repair the short to voltage on the circuit.
• If less than 1 V, replace the human machine interface module.
• If less than 1 V
5. Ignition OFF, disconnect the X1 harness connector at the human machine interface module.
6. Test for infinite resistance between the circuits listed below and ground:
* human machine interface module signal circuit terminal 1 X1
* human machine interface module low reference circuit terminal 2 X1
• If less than infinite resistance
Repair the short to ground on the circuit.
• If infinite resistance
7. Test for less than 5 ohms between the terminals listed below:
* human machine interface module signal circuit terminal 1 X1 and the K73 telematics communication interface module signal circuit terminal 6 X2
* human machine interface module low reference circuit terminal 2 X1 and the K73 telematics communication interface module low reference circuit terminal 12 X2
• If 5 ohms greater
Repair the open/high resistance in the circuit.
• If less than 5 ohms
8. Replace the human machine interface module. Connect all harness connectors.
Note: Refer to the Owners Manual and/or the Navigation System Owners Manual for voice recognition use and commands.
9. Begin voice recognition for the infotainment system and clearly speak one of the available commands.
10. Verify the infotainment system responds correctly to the command.
• If the infotainment system does not respond correctly to the command
1. Clearly speak a different command.
2. Verify the infotainment system responds correctly to the command.
• If the infotainment system does not respond correctly to any commands, replace the K73 telematics communication interface module.
• If the infotainment system responds correctly to the command
11. All OK
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the repair.
Control Module References Control Module References for human machine interface module or telematics communication interface control module replacement, programming and setup.