Eighty-Eight Royale FWD V6-3.8L VIN K (1996)
Audible Warning Device: Component Tests and General Diagnostics
Circuit Operation - Chime
The audio alarm system brings to the driver's attention one or more of several conditions:
1. Lamps are on, ignition switch is set to LOCK, OFF or ACCY, and driver's door is open.
2. Key is in ignition switch, ignition switch is set to LOCK, OFF or ACCY, and driver's door is open.
3. Seat belt is unbuckled and ignition switch is in RUN, BULB TEST or START
4. A turn signal is left on and vehicle has traveled over 1.2 km (3/4 mile).
5. Park brake is engaged and vehicle has traveled approximately 12 m (40 feet).
Module Power
Voltage is applied at all times on CKTS 540 and 640 to Body Control Module (MALL) connector C1 terminal H and G respectively, to power the
module, With the ignition switch in RUN, BULB TEST or START, voltage is applied on CKT 39 to module connector C2 terminal C13.
Lamps On Chime
If the LH front door is open and the Body Control Module (MALL) does not sense voltage at the lamps off input (terminal D5) and there is no
voltage at the ignition on input (terminal C13), the fast-pulsed lamps on chime sounds.
Key In Ignition Chime
The key in ignition chime sounds with the key in ignition switch and the driver's door open. When the ignition key warning switch and the LH
front door lock switch are closed, the Body Control Module (MALL) senses ground at the key in ignition and sounds the medium-pulsed chime.
Fasten Belts Chime
With ignition switch in RUN, BULB TEST, or START, voltage is applied through IGN/CHIME/CLUSTER Fuse to module connector C2
terminal C13 to the Body Control Module (MALL). With the driver's seat belt unbuckled, module connector C2 terminal D1 is grounded through
the seat belt switch, and the FASTEN BELTS indicator lights for 4 to 8 seconds.
The fasten belts chime sounds for 4 to 8 seconds if driver's seat belt is unbuckled and ignition switch is turned to RUN, BULB TEST or START.
If driver's seat belt is buckled when the ignition switch is turned to RUN, BULB TEST or START, no chime sounds.
Turn Signal On Chime
When a turn signal is operated, the Body Control Module (MALL) begins to monitor vehicle distance. If the turn signal is still flashing after the
vehicle has traveled 1.2 km (3/4 mile), the turn signal on chime sounds.
Park Brake Chime
Refer to Brake Warning Systems for park brake chime operation.
General Information
For Oldsmobile the Multi-Function Chime (MFC) control module is located on the multi-use bracket behind the I/P Compartment. The MFC module has
no audible output. For all chime warnings, the MFC control module grounds Terminal B6. This signals the body control module (MALL) to sound a
chime. The MFC control module provides the following warnings:
^
High Coolant Temperature
^
Low Oil Pressure
^
Low Brake Fluid Level
^
Low Oil Level
^
Low Coolant Level
^
Low Washer Fluid Level
Hi Coolant Temperature Warning
The Coolant Temperature Sensor determines when the engine coolant is too hot and signals the Powertrain Control Module (PCM) at Connector C2
terminal 52. The PCM then grounds Multi-Function Chime (MFC) control module. Terminal B5 and the TEMP indicator in the Instrument Cluster. A
fast-pulsed chime sounds briefly and the TEMP indicator lights and stays on even after the chime stops. The ignition switch provides a bulb check of the
TEMP indicator when the ignition switch is in BULB TEST or START.
LO Oil Pressure Warning
When the oil pressure is low. Multi-Function Chime (MFC) control module Terminal B8 is grounded. If the voltage at Terminal A4, engine running
input, is above 5.1 volts, a fast-pulsed chime sounds briefly and the OIL Indicator lights the Instrument Cluster.
LO Washer Fluid Level Warning
When the washer fluid level is low, Multi-Function Chime (MFC) control module Terminal A2 is grounded. A slow, brief chime sounds and the control
module turns on its output at Terminal A1 to light the LOW WASHER FLUID Indicator in the Instrument Cluster.
LO Brake Fluid Level Warning
When there is low brake fluid level in the master cylinder reservoir, Multi-Function Chime (MFC) control module Terminal A6 is grounded and a fast