Pinpoint Test Al: The Key-In-Ignition Warning Chime Is Inoperative: Notes

Pinpoint Test AL: The Key-In-Ignition Warning Chime Is Inoperative 

Refer to Wiring Diagrams Instrument Panel Cluster for schematic and connector information.

Normal Operation 

The Instrument Panel Cluster (IPC) receives the key-in-ignition warning chime command from the Body Control Module (BCM) over the High Speed Controller Area Network (HS-CAN). The BCM monitors the door ajar input from the LH front door and the key-in-ignition switch status.

On vehicles without Intelligent Access (IA), the key-in-ignition warning switch (part of the ignition switch) is hardwired to the BCM. When the key is inserted into the ignition lock cylinder, the key-in-ignition switch closes, supplying voltage to the BCM.

On vehicles with IA, the BCM monitors the ignition start/stop button and determines the ignition mode. When the ignition is in ACC, the BCM assumes a key-in-ignition state.

When the BCM determines a key-in-ignition state with the LH front door open or ajar, the BCM sends the IPC a chime request message to sound the key-in-ignition warning chime.

• DTC B10F1:14 (Key In Switch: Circuit Short To Ground or Open) - a continuous and on-demand DTC that sets if the BCM detects an open on the key-in-ignition switch input circuit or if the BCM detects ignition START, RUN/START or RUN/ACC inputs without the key-in-ignition input.

This pinpoint test is intended to diagnose the following: 

• Interior lighting concern
• Wiring, terminals or connectors
• Key-in-ignition warning switch (part of the ignition switch) (without IA)
• BCM
• IPC