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For 1990-2009 cars only

Bluetooth Communication Automatic Radio Mute Mode Malfunction Holden Genuine Accessory

Diagnostic Instructions

    • Perform the Diagnostic System Check - Vehicle prior to using the diagnostic procedure.
    • Review Strategy Based Diagnosisfor an overview of the diagnostic approach.
    •  Diagnostic Procedure Instructionsprovides an overview of each diagnostic category Circuit/System Description.

Circuit/System Description

The Bluetooth Module is a cellular device that is powered by battery positive voltage, Ignition I voltage and ground from a patch harness connected between the radio connectors. It allows a cordless link between a cellular telephone and the vehicle Bluetooth communication system. The Bluetooth Module is not connected to the GMLAN system. It communicates with the cellular telephone via low-power radio waves. Due to the low power of the signal, approximately 1 milliwatt, a cellular telephone must be within 10 meters (32 feet) of the vehicle's Bluetooth module to connect an operate.

When making or receiving a call, the vehicle's audio system is automatically set to MUTE mode. The voice of the caller is heard through the speakers of the audio systems.

Reference Information

Schematic Reference

Bluetooth Communication Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Bluetooth Communication Description and Operation

Component View Reference

Bluetooth Communication Component Views

Electrical Information Reference

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

Circuit/System Testing

  1. Ignition OFF, disconnect the connector at the Bluetooth microphone.
  2. Ignition ON, test for 2.5-3.5 volts between the signal circuit terminal 3 and ground.
  3. If greater than the specified range, test the signal circuit for a short to voltage.
    If less than the specified range, test the signal circuit for a short to ground or an open/high resistance.
    If the circuit tests normal, test the Bluetooth switch.
  4. Ignition OFF, connect the connector at the Bluetooth microphone.
  5. Ignition OFF, disconnect the X2 connector at the Radio.
  6. Ignition ON, test for infinite resistance between the signal terminal 4 and ground.
  7. If not the specified value, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the Bluetooth module.
  8. Ignition ON, slowly press the Bluetooth switch 3 times, immediately after pressing the Bluetooth switch, test for 5.5-6.0 k/Ohm between the signal circuit terminal 4 and ground. The test value should stay within this range for about two seconds only.
  9. If not the specified value, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the Bluetooth module.

Component Testing

Bluetooth Switch Tests

  1. Ignition OFF, disconnect the connector at the Bluetooth switch.
  2. Test for infinite resistance between the following terminals:
  3. • 3 and 1
    • 3 and 2
    If not the specified value, replace the Bluetooth switch.
  4. Bluetooth switch pressed, test for 650- 700 Ohms between terminals 3 and 1.
  5. If the resistance is not within the specified range, replace the Bluetooth switch.
  6. Bluetooth switch pressed, test for 6.2-6.8 k/Ohms between terminals 3 and 1.
  7. If the resistance is not within the specified range, replace the Bluetooth switch.

Repair Instructions

For component removal and installation refer to the accessory fitting instructions. Perform the Diagnostic Repair Verificationafter completing the diagnostic procedure.