GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2005 🢒 Equinox 🢒 Vehicle Control Systems 🢒 Vehicle DTC Information 🢒 Chime Malfunction

Diagnostic Instructions
    • Perform the Diagnostic Starting Point - Instrument Panel, Gages and Console prior to using this diagnostic procedure.
    • Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

Diagnostic Fault Information

Circuit

Short to Ground

Open/High Resistance

Short to Voltage

Signal Performance

Key In Ignition Signal

1

1

--

--

Key In Ignition Ground

--

1

1

--

1. Chime Malfunction.

Circuit/System Description

The radio generates the audible warning through the left speaker. The radio receives audible warning requests via the serial data circuit from the instrument panel cluster (IPC) or the body control module (BCM).

Reference Information

Schematic Reference

Audible Warnings Schematics

Connector End View Reference

Instrument Panel, Gages, and Console Connector End Views

Description and Operation

Audible Warnings Description and Operation

Electrical Information Reference

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

Circuit/System Verification

Important: Before performing this diagnostics, make sure no indicators are illuminated after the IPC performs a lamp test. If any indicators are illuminated after the bulb test, perform the indicator diagnostics before this diagnostics.

  1. Ignition ON, headlamp switch OFF, verify the scan tool Headlamp Switch parameter is Inactive.
    2. ⇒If not Inactive, refer to Headlamp Low or High Beams Always On.
  2. Ignition ON, park lamp switch OFF, verify the scan tool Park Lamps Switch parameter is Inactive.
    3. ⇒If not Inactive refer to Park Lamps Always On.
  3. Ignition ON, doors closed, verify the scan tool All Door Lock Command is On.
    4. ⇒If not On, refer to Courtesy Lamps Always On.
  4. Ignition ON, radio ON, adjust the radio balance and fade to the left front speaker.
    5. ⇒If the speaker does not operate properly, refer to Speakers Inoperative - One or More.
  5. Verify that the Key In Ignition Status parameter is Yes when the key is in the ignition and No when the key is out of the ignition.

Circuit/System Testing
  1. Ignition OFF, disconnect the harness connector at the ignition switch.
  2. Test for less than 5 ohms between the ground circuit terminal E and ground.
    3. ⇒If greater than the specified range, test the ground circuit for an open/high resistance.
  3. Ignition ON, verify the scan tool Key In Ignition parameter is No.
    4. ⇒If not the specified value, test the signal circuit terminal D for a short to ground. If the circuit tests normal, replace the BCM.
  4. Install a 3A fused jumper wire between the signal circuit terminal D and ground. Verify the scan tool Key In Ignition parameter is Yes.
    5. ⇒If not the specified value, test the signal circuit D for a short to voltage or an open/high resistance. If the circuit tests normal, replace the BCM.
  5. If all circuits test normal, test or replace the ignition switch.

Repair Instructions

Perform the diagnostic repair verification after completing the diagnostic procedure.

    •  Ignition and Start Switch Replacement.
    •  Control Module References for the BCM replacement, setup and programming.