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 Signal | 1 | 1 | 1 | -- |
Key In Ignition Ground | -- | 1 | 1 | -- |
1. Chime Malfunction | ||||
Circuit/System Description
The instrument panel cluster (IPC) generates the audible warning through an internal acoustic speaker. The IPC receives audible warning requests via the serial data circuit from 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 a lamp test. If any indicators are illuminated after the bulb test, perform the indicator diagnostics before this diagnostics.
- Ignition ON, headlamp switch OFF, verify the scan tool Headlamp Switch parameter is Inactive.
- Ignition ON, doors closed, verify the scan tool All Door Lock Command is On.
- Verify that the Key In Ignition Cylinder Switch parameter is Active when the key is in the ignition and Inactive when the key is out of the ignition.
| ⇒ | If not Inactive, refer to Headlamps Malfunction. |
| ⇒ | If not On, refer to Courtesy Lamps Malfunction. |
Circuit/System Testing
- Ignition OFF, disconnect the harness connector at the key in ignition switch.
- Ignition OFF, test for less than 1 ohm between the ground circuit terminal 2 and ground.
- Verify the BCM scan tool Key In Ignition Cylinder Switch parameter is Inactive.
- Install a 3A fused jumper wire between the signal circuit terminal 1 and the ground circuit terminal 2. Verify the scan tool Key In Ignition Cylinder Switch parameter displays Active.
- If all circuits test normal, test or replace the ignition switch.
| ⇒ | If greater than 1 ohm, test the circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the ECM. |
| ⇒ | 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 for 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 BCM or IPC replacement, setup, and programming |
