Pinpoint Test AK: The Chime Sounds When The Driver Door Is Ajar (No Key In Ignition And Headlamps Off)
Instrumentation, Message Center and Warning Chimes
Pinpoint Test AK: The Chime Sounds When The Driver Door Is Ajar (No Key In Ignition And Headlamps Off)
Refer to Wiring Diagram Set 60, Instrument Panel Cluster for schematic and connector information Electrical Diagrams.
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 (Body Control Module) 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 (Body Control Module). When the key is inserted into the ignition lock cylinder, the key-in-ignition switch closes, supplying voltage to the BCM (Body Control Module).
On vehicles with IA (Intelligent Access), the BCM (Body Control Module) monitors the ignition start/stop button and determines the ignition mode. When the ignition is in ACC, the BCM (Body Control Module) assumes a key-in-ignition state.
When the BCM (Body Control Module) determines a key-in-ignition state with the LH front door open or ajar, the BCM (Body Control Module) sends the IPC (Instrument Panel Cluster) a chime request message to sound the key-in-ignition warning chime.
The headlamps on warning chime sounds when the LH front door is opened with the ignition OFF and the headlamp switch in the PARK or HEADLAMP ON position. The BCM (Body Control Module) receives the headlamp switch status from the Front Lighting Control Module (FLM) over the HS-CAN (High Speed Controller Area Network) and the LH front door ajar status from the LH front door ajar switch through hardwired circuitry. The BCM (Body Control Module) communicates the headlamp on chime request to the IPC (Instrument Panel Cluster) when the headlamps or parking lamps are on and the driver door is opened.
When the BCM (Body Control Module) determines a key-in-ignition state with the LH front door open or ajar, the BCM (Body Control Module) sends the IPC (Instrument Panel Cluster) 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 (Body Control Module) detects an open on the key-in-ignition switch input circuit or if the BCM (Body Control Module) detects ignition start, run/start or run/acc inputs without the key-in-ignition input.
This pinpoint test is intended to diagnose the following:
- Exterior lighting concern
- Interior lighting concern
- Vehicle may still be in factory mode
- Wiring, terminals or connectors
- Key-in-ignition warning switch (part of the ignition switch) (without IA (Intelligent Access))
- BCM (Body Control Module)
PINPOINT TEST AK : THE CHIME SOUNDS WHEN THE DRIVER DOOR IS AJAR (NO KEY IN IGNITION AND HEADLAMPS OFF)
NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
AK1 CHECK FOR VEHICLE OPERATION MODE
- Ignition ON.
- Observe the message center display.
Does the message center display FACTORY MODE?
Yes
CONTACT hotline to place the vehicle in normal operation mode.
No
GO to AK2.
AK2 CHECK THE IPC (Instrument Panel Cluster) ILLUMINATION
- Close all doors.
- Wait one minute.
- Observe the exterior lights.
Are the headlamps and parking lamps off?
Yes
GO to AK3.
No
REFER to Lighting and Horns.
AK3 CHECK THE INTERIOR LIGHTING OPERATION
- Open and close the driver door.
- Observe the interior lamps.
Do the interior lamps operate correctly from the driver door?
Yes
GO to AK4.
No
REFER to Lighting and Horns.
AK4 RETRIEVE THE RECORDED DTCs FROM THE BCM (Body Control Module) SELF-TEST
- Check the recorded DTCs from the BCM (Body Control Module) self-tests.
Are any DTCs present?
Yes
For DTC B10F1:14, GO to AK5.
For all other DTCs, REFER to Body Control Systems.
No
GO to AK7.
AK5 CHECK THE BCM (Body Control Module) INPUT PIDs FROM THE IGNITION SWITCH
- Enter the following diagnostic mode on the scan tool: BCM (Body Control Module) DataLogger.
- Select and monitor the BCM (Body Control Module) ignition switch PIDs (IGN_ACC/RUN), (IGN_RUN/STRT) and (IGN_SW_STATE) while cycling the ignition switch through ACC, OFF, RUN and START states.
Do the BCM (Body Control Module) PIDs match the ignition switch position?
Yes
GO to AK6.
No
REFER to Steering Column to diagnose the ignition switch outputs to the BCM (Body Control Module).
AK6 CHECK THE KEY-IN-IGNITION INPUT CIRCUIT FOR VOLTAGE
- Ignition OFF.
- Remove the key from the ignition cylinder.
- Disconnect: BCM (Body Control Module) C2280B.
- Measure the voltage between the BCM (Body Control Module) C2280B-34, circuit CDC30 (BU/GY), harness side and ground.
Is any voltage present?
Yes
GO to AK7.
No
GO to AK8.
AK7 CHECK KEY-IN-IGNITION INPUT CIRCUIT FOR A SHORT TO VOLTAGE
- Disconnect: Ignition Switch C250.
- Measure the voltage between the BCM (Body Control Module) C2280B-34, circuit CDC30 (BU/GY), harness side and ground.
Is any voltage present?
Yes
REPAIR circuit CDC30 (BU/GY) for a short to voltage. TEST the system for normal operation.
No
INSTALL a new ignition switch. TEST the system for normal operation.
AK8 CHECK FOR CORRECT BCM (Body Control Module) OPERATION
- Disconnect all the BCM (Body Control Module) connectors.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect all the BCM (Body Control Module) connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
Is the concern still present?
Yes
INSTALL a new BCM (Body Control Module). TEST the system for normal operation.
No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.