Instruments and Controls Identification VIGIL II Warning System, Optional gine. It will run for about 30 seconds before shutting down again. The VIGIL II system is an electronically controlled warning and engine shutdown system. It controls the turn signal functions and various optional functions. A solid state lightbar ( Fig. 2.22 ) in the instrument panel contains displays for the functions. Turn Signal Functions The system operates the turn signal relay and the in- dicators. Other Functions 1 2 3 4 5 6 7 8 The system also controls several functions such as the headlight high beam indicator, low air pressure warning light, and control of indicators for six optional features.
The optional features can be any combina- tion of the following: 10/26/98 f600630b 1. Left-Turn Signal Light 2. Oil Pressure Warning Light 3. Low-Water Warning Light 4. Water Temperature Warning Light 5. Engine Shutdown Light 6. High-Beam Indicator Light 7. Low Air Pressure Warning Light 8. Right-Turn Signal Light transmission temperature axle temperature engine heater alternator no charge fifth wheel lock Fig. 2.22, VIGIL II and Kysor VIP Warning System, Optional parking brake Engine Functions sand The system monitors engine coolant temperature, coolant level, and oil pressure. antilock If the engine overheats, a warning light comes on and a buzzer sounds.
The temperature that triggers the warning light and buzzer varies with engine type and is programmed into the system at the factory. If the temperature contin- ues to rise to critical levels, the engine shut- down light comes on, and the engine will be shut down. mirror heater utility lights axle lock sludge ejector or any six that are specially ordered. Additional Features If the coolant level drops below a sensor in the cooling system, the low water level light comes on. After 5 seconds, a buzzer sounds, and after 30 seconds, the system will shut down the engine.
When the ignition is turned on, all of the LEDs in the lightbar will light and the low air and low oil pressure alarms will sound. The lights and alarms will activate for two one-second periods, separated by a half sec- ond pause. This is a self-test to indicate whether or not the lightbar is working. After the test, the LEDs not in use will turn off. The low air and oil pressure warnings will not sound again until the starter is cranked. Once the starter is cranked, the alarms will sound until system air and oil reach minimum operat- ing pressures. If the lightbar does not operate as de- scribed here, test it. For instructions, see Group 54 of the Heavy-Duty Trucks Service Manual.
If the oil pressure drops below a preset level, the low oil pressure light comes on and a warning buzzer sounds. If the oil pressure drops to a preset critical level, the engine shut- down light comes on, and the engine will be shut down. All shutdown features have an automatic over- ride. If the vehicle needs to be moved to a safe location after a shutdown, just crank the en- 2.17