Instrument Cluster
The instrument cluster acts as a system monitor for the visual warnings. It receives inputs from switches and sensors directly or through the multiplex link from another module and triggers the necessary visual warning
Ignition Switch Lock Cylinder (North America Only)
A warning chime will sound continuously when the driver door is open and the key is in the ignition, on removal of the key the warning will cease. The switch is an integral part of the ignition lock cylinder and therefore can only be installed with the lock cylinder.
Door Ajar Switches
The door ajar switches (within the latch) activate the system to provide a visual warning when the ignition is in the RUN position and any of the doors are open/ajar.
Luggage Compartment Switch - 4 Door Vehicles
The luggage compartment switch activates the system to provide a visual warning when the ignition is in the RUN position and the luggage compartment is open/ajar.
Liftgate Switch - Wagon
The liftgate switch (within the liftgate latch) activates the system to provide a visual warning when the ignition is in the RUN position and the liftgate is open/ajar.
Liftgate Opening Window - Wagon
The liftgate opening window switch (within the liftgate window glass latch) activates the system to provide a visual warning when the ignition is in the RUN position and the liftgate window glass is open/ajar.
Engine Compartment Switch
The engine compartment switch activates the system to provide a visual warning when the ignition is in the RUN position and the hood is open/ajar.
Headlamp Switch
A warning chime will sound continuously when the driver door is open/ajar and the vehicle lamps are on. This warning is provided only with the ignition off and will cease after 30 minutes, when the lamps are switched off or when the door is closed.
Safety Belt Switch (North America, Japan, Mexico and Dominican Republic Only)
A warning chime will sound continuously for approximately six seconds when the driver turns the ignition to the RUN position and the safety belt is not engaged. The warning chime will cease if the safety belt is engaged. The switch is an integral part of the driver safety belt buckle and therefore can only be installed with a safety belt buckle. A visual warning will also be provided on the instrument cluster.
Cooling Over Temperature
Engine temperatures above 120°C activate the system to provide a visual warning in the instrument cluster. The temperature warning light is illuminated constantly and a HIGH ENGINE TEMPERATURE is displayed in the message center (if fitted).
Air Bag Malfunction Chime
If a fault is detected with the air bag visual indication circuit five short warning chimes will be generated and repeated five times. This sequence is repeated every 30 minutes.
J Gate (Automatic vehicles only)
A warning chime will sound if the J Gate selector is not in PARK and the ignition is turned from RUN to ACC. The chime continues for 10 seconds or until the selector is placed in PARK.
The complexity of the electronics involved with the instrument cluster and general electronic module (GEM), of which the message center is a part, and the multiplexed communication network which are connected to it preclude the use of workshop general electrical test equipment. Therefore, reference should be made to the Jaguar Approved Diagnostic System for detailed instructions on testing the message center.
The Jaguar Approved Diagnostic System tests and analyses, in detail, all functions of the message center.
Where a fault involving the message center is indicated by the Jaguar Approved Diagnostic System, some basic diagnostic methods may be necessary to confirm that connections are good and that the wiring is not damaged, before installing new components.
- Verify the customer concern by operating the system.
- Visually inspect for obvious signs of mechanical or electrical damage.