Chime Warning System

The chime warning system operates on battery voltage received on a non-switched fused B(+) circuit so that the system may operate regardless of the status of the ignition switch. The chime warning system also monitors the ignition switch status so that some chime features are functional only when the status of the ignition switch is ON, while others are functional regardless of the ignition switch status.

The chime warning system provides an audible indication to the vehicle operator or occupants under the following conditions:

• ABS Indicator Warning  - On vehicles equipped with an optional Antilock Brake System (ABS), the Instrument Panel Cluster (IPC) will generate one short chime each time the ABS indicator is illuminated. This warning indicates a failure condition has been monitored affecting the operation of the ABS related components or circuits. This warning will only occur following completion of the ABS indicator bulb test, and will only occur once during any ignition cycle.
• Adjustable Pedal System Warning  - On vehicles equipped with the optional adjustable pedal system, the IPC will generate one short chime each time a pedal adjustment request is received and a PEDAL ADJUST. DISABLED - CRUISE CONTROL SET  or a PEDAL ADJUST. DISABLED - SHIFTER IN REVERSE  textual message is displayed in the Electronic Vehicle Information Center (EVIC) display of the IPC. A single short chime will also be sounded each time a pedal adjustment request is received while a failure condition has been monitored affecting the operation of the adjustable pedal system related components or circuits.
• Airbag Indicator Warning  - The IPC will generate one short chime when the status of the ignition switch transitions to ON and the airbag indicator is illuminated. This warning indicates a failure condition has been monitored affecting the operation of the Supplemental Restraint System (SRS) related components or circuits. This warning will only occur following completion of the airbag indicator bulb test.
• Automatic Oil Change Indicator  - The IPC will generate one short chime each time an OIL CHANGE REQUIRED  or OIL CHANGE RESET  textual message is displayed in the EVIC display of the IPC. This warning indicates that a duty-cycle algorithm contained within the software of the Powertrain Control Module (PCM) has determined that a recommended oil change interval has been attained, or that a reset of the interval has been requested following performance of the recommended service.
• Charging System Indicator Warning  - The IPC will generate one short chime each time the status of the ignition switch is ON and the charging system indicator is illuminated. This warning indicates that a failure condition has been monitored affecting the operation of the charging system related components or circuits.
• Check Engine Indicator Warning  - The IPC will generate one short chime when the status of the ignition switch is ON and the check engine (Malfunction Indicator Lamp/MIL) indicator is illuminated. This warning indicates that a failure condition has been monitored affecting the operation of a critical fuel or emissions related component or circuit.
• Door Ajar Warning  - The IPC will generate one short chime when a DOOR(S) OPEN  textual message and icon are displayed in the EVIC display of the IPC. This warning indicates that a door is, or multiple doors are not closed or completely latched while the vehicle is moving.
• Electronic Stability Control (ESC) System Warning  - On vehicles equipped with the optional ESC, the IPC will generate one short chime when the ESC OFF  textual message is displayed in the EVIC display of the IPC. This warning indicates that the ESC system has been manually disabled using the ESC switch.
• Electronic Stability System Fault Warning  - On vehicles equipped with the optional ESC, the IPC will generate one short chime each time the ESC indicator is illuminated in the instrument cluster. This warning indicates a failure condition has been monitored affecting the operation of the ESC related components or circuits. This warning will only occur following completion of the ESC indicator bulb test, and will only occur once during any ignition cycle.
• Fasten Seat Belt Indicator Warning  - The IPC will generate repetitive chimes at a slow rate to announce that an input from the seat belt switch and the ignition switch indicate that the driver side front seat belt is not fastened while the status of the ignition switch is ON. The chime warning system also supports the enhanced seat belt reminder (beltminder) when this feature is enabled. Refer to INDICATORS, INSTRUMENT CLUSTER, OPERATION .
• Head/Park Lamps-ON Warning  - The IPC will generate repetitive chimes at a fast rate to indicate that hard-wired inputs from the headlamp switch and the ignition switch indicate that the exterior lamps are turned ON while the status of the ignition switch is OFF, and either a hard-wired input or an electronic message is received over the CAN data bus indicating that the driver side front door is open. The chimes will continue to sound until the exterior lamps are turned OFF, the driver side front door is closed or the status of the ignition switch transitions to ON, whichever occurs first.
• Low Brake Fluid Warning  - The IPC will generate one short chime when a LOW BRAKE FLUID LEVEL  textual message is displayed in the EVIC display of the IPC. This warning indicates that the monitored fluid level in the brake master cylinder is low.
• Low Coolant Warning  - The IPC will generate one short chime when the COOLANT LOW  textual message and icon are displayed in the EVIC display of the IPC. This warning indicates that the monitored engine coolant level in the coolant reserve bottle is low. This chime will only occur once during any ignition cycle.
• Low Fuel Warning  - The IPC will generate one short chime when the FUEL LOW  textual message and icon are displayed in the EVIC display of the IPC. This warning indicates that the monitored fuel level in the fuel tank is low. This chime will only occur once during any ignition cycle.
• Low Oil Pressure Indicator Warning  - The IPC will generate one short chime when the low oil pressure indicator is illuminated and the engine speed is greater than 300 revolutions per minute. This warning indicates that the monitored engine oil pressure is low.
• Low Wash Warning  - The IPC will generate one short chime when the WASHER FLUID LOW  textual message and icon are displayed in the EVIC display of the IPC. This warning indicates that the monitored washer fluid level in the washer reservoir is low.
• Memory System Warning  - On vehicles equipped with the optional memory system, the IPC will generate one short chime each time a memory recall request is received and a MEMORY SYSTEM DISABLED - SEATBELT FASTENED  textual message and icon, or a MEMORY SYSTEM DISABLED - VEHICLE NOT IN PARK  textual message is displayed in the EVIC display of the IPC. A single short chime will also be sounded each time a memory recall request is received while the memory system is inhibited due to a vehicle speed input that is greater than zero.
• Overspeed Warning  - The IPC will generate repetitive chimes at a slow rate when the WARNING! LIMIT SPEED  textual message is displayed in the EVIC display of the IPC. This warning indicates that the vehicle speed is over a pre-programmed speed value. This feature is only enabled on vehicles that have been configured for sale in a Middle East Gulf Coast Country (GCC).
• Park Assist System Warning  - On vehicles equipped with the optional park assist system, the IPC will generate one short chime when the PARK ASSIST OFF  textual message is displayed in the EVIC display of the IPC. This warning indicates that the park assist system has been manually disabled using the park assist switch. The same chime and PARK ASSIST OFF  textual message is displayed at the beginning of each ignition cycle and each time the gear selector is moved into Reverse R  while the system has been manually disabled.
• Park Brake Reminder  - The IPC will generate one short chime when the brake/park brake indicator is illuminated to announce that the park brake is applied or not fully released and the vehicle is moving. This chime will only occur once during any ignition cycle.
• Remote Keyless Entry System Warning  - The IPC will generate one short chime when a SERVICE KEYLESS SYS., KEY FOB NOT DETECTED, VEHICLE NOT IN PARK,  or VEHICLE NOT IN REVERSE  textual error message is displayed in the reconfigurable display of the IPC. This message indicates that a Passive Entry and Keyless Go (PEKG) system feature is inoperable due to the displayed error condition.
• FOBIK PROGRAMMING. Refer to  STANDARD PROCEDURE  . 
• Service Park Assist System Warning  - On vehicles equipped with the optional park assist system, the IPC will generate one short chime each time the SERVICE PARK ASSIST SYSTEM  textual message is displayed in the EVIC display of the IPC. This warning indicates a failure condition has been monitored affecting the operation of the park assist system related components or circuits.
• Service Tire Pressure Monitor System Warning  - On vehicles equipped with a base or optional premium Tire Pressure Monitor (TPM) system, the IPC will generate one short chime each time a SERVICE TIRE PRESS. SYSTEM  textual message is displayed in the EVIC display of the IPC. This warning indicates a failure condition has been monitored affecting the operation of the tire pressure monitor system related components or circuits.
• Tire Pressure Monitor Warning  - On vehicles equipped with a base or optional premium Tire Pressure Monitor (TPM) system, the IPC will generate one short chime each time a LOW PRESSURE  textual message is displayed in the EVIC display of the IPC. This warning indicates that a low pressure condition has been monitored in one of the tires on or in the vehicle.
• Trans Overtemp Warning  - The IPC will generate one short chime each time the TRANSMISSION OVER TEMP  textual message is displayed in the EVIC display of the IPC. This warning indicates that the fluid temperature in the automatic transmission is excessive. This chime will repeat each time the trans overtemp message is cycled from OFF to ON.
• Turn Signal/Hazard Warning Flasher Emulation  - The IPC will generate repetitive clicks at a slow rate to emulate an electromechanical flasher when the turn signal or hazard warning system are operating. The IPC will generate repetitive clicks at a fast rate to indicate that the right or left turn signal are operating with one or more bulbs or circuits ineffective. In either case, the clicks will continue until the turn signal and hazard warning systems are turned OFF.
• Turn Signal ON Warning  - The IPC will generate one short chime and a TURN SIGNAL ON  textual message with a blinking right or left turn signal icon are displayed in the EVIC display of the IPC. This warning indicates that a turn signal has been active continuously for 1.6 kilometers (1 mile) with the vehicle speed greater than 22 km/h (15 mph). The hazard warning flashers will not activate this chime feature.

The IPC provides chime service for all available features in the chime warning system, except for the audible warning function provided by each of the optional park assist system display modules. The IPC relies on its internal programming, numerous hard-wired inputs, and electronic message inputs received from other modules over the CAN data bus to provide the chime warning system features. The internal programming of the IPC determines the priority of each chime request input that is received, as well as the rate and duration of each chime that is to be generated.

The hard wired circuits between components related to the chime warning system may be diagnosed using conventional diagnostic tools and procedures. Refer to the appropriate wiring information. The wiring information includes wiring diagrams, details of wire harness routing and retention, connector pin-out information and location views for the various wire harness connectors, splices and grounds. For proper wire repair, and connector repair procedures. Refer to STANDARD PROCEDURE . and. Refer to REMOVAL . Refer to INSTALLATION .

However, conventional diagnostic methods will not prove conclusive in the diagnosis of the chime warning system or the electronic controls and communication between modules and other devices that provide some features of the chime warning system. The most reliable, efficient and accurate means to diagnose the chime warning system or the electronic controls and communication related to chime warning system operation requires the use of a diagnostic scan tool. Refer to the appropriate diagnostic information.