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 provides an overview of each diagnostic category. |
Diagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Key In Ignition Ground | -- | 1 | -- | -- |
Key In Ignition Signal | 1 | 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
Connector End View Reference
Description and Operation
Audible Warnings Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
Important: Before performing this diagnostics, make sure no indicator(s) are illuminated after the IPC performs the displays test. If any indicators are illuminated after the bulb test, perform the indicator diagnostics before this diagnostic.
- Ignition ON, headlamp switch OFF, verify the scan tool Headlamp Switch parameter is Inactive.
- Ignition ON, park lamp switch OFF, verify the scan tool Park Lamp Switch parameter is Inactive.
- Ignition ON, doors closed, verify the scan tool Door Ajar Switch parameters are Door Closed.
- Ignition ON, radio ON, adjust the radio balance and fade to the left front speaker.
- Verify that the Key In Ignition Status parameter is Key In when the key is in the ignition and Key Out when the key is out of the ignition.
| ⇒ | If not Inactive, refer to Headlamps Malfunction. |
| ⇒ | If not Inactive, refer to Park, License, and/or Tail Lamps Malfunction. |
| ⇒ | If not Door Closed, refer to Courtesy Lamps Malfunction. |
| ⇒ | If the speaker does not operate properly, refer to Speaker Malfunction. |
Circuit/System Testing
- Ignition OFF, disconnect the harness connector at the ignition switch.
- Test for less than 5 ohms between the ground circuit terminal 2 and ground
- Ignition ON, verify the scan tool Key In Ignition parameter is Key In.
- Install a 3A fused jumper wire between the signal circuit terminal 1 and ground. Verify the scan tool Key In Ignition parameter is Key Out.
- If all circuits test normal, test or replace the ignition switch.
| ⇒ | If greater than the specified range, test the ground circuit for an open/high resistance. |
| ⇒ | If not the specified value, test the signal circuit terminal 1 for a short to ground. If the circuit tests normal, replace the BCM |
| ⇒ | If not the specified value, test the signal circuit 1 for a short to voltage or an open/high resistance. If the circuit tests normal, replace the BCM. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Control Module References for the BCM replacement, setup, and programming |
