GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2009 🢒 Captiva Sport 🢒 Driver Information and Entertainment 🢒 Cellular, Entertainment, and Navigation 🢒 Navigation System - Voice Recognition Inoperative

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 provide an overview of each diagnostic category.

Circuit/System Description

The vehicle navigation radio and the Onstar® system both utilize the cellular microphone to receive voice commands. The navigation radio receives an audio voice signal from the vehicle communication interface module (VCIM).

Reference Information

Schematic Reference

Radio/Navigation System Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Navigation System Description and Operation

Electrical Information Reference

    •  Circuit Testing
    •  Connector Repairs
    •  Testing for Intermittent Conditions and Poor Connections
    •  Wiring Repairs

Scan Tool Reference

Control Module References

Circuit/System Testing
  1. Verify the OnStar® voice recognition is operating normally.
    2. ⇒If the OnStar® voice recognition is inoperative, refer to OnStar Microphone Inoperative - Caller Cannot Be Heard .
  2. Ignition OFF, disconnect the radio harness connector X1 and VCIM harness connector X3.
  3. Test for less than 1 volt on the microphone out circuit radio harness connector terminal 4 and ground.
    4. ⇒If greater than specified value, repair short to voltage.
  4. Test for greater than 1 ohm between the microphone out circuit radio harness connector terminal 4 and ground.
    5. ⇒If less than specified value, repair short to ground.
  5. Test for less than 1 ohm between the microphone out circuit radio harness connector terminal 4 and the microphone out signal circuit VCIM harness connector terminal 2.
  6. If greater than specified value, repair open circuit.
  7. Test for less than 1 volt on the low reference circuit radio harness connector terminal 5 and ground.
    8. ⇒If greater than specified value, repair short to voltage.
  8. Test for greater than 1 ohm between the low reference circuit radio harness connector terminal 5 and ground.
    9. ⇒If less than specified value, repair short to ground.
  9. Test for less than 1 ohm between the low reference circuit radio harness connector terminal 5 and the low reference signal circuit VCIM harness connector terminal 4.
    10. ⇒If greater than specified value, repair open circuit.
  10. If all circuits test normal, replace the radio.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for radio replacement, setup, and programming