Instruments and Controls Identification If DDEC III detects low oil pressure, both the "Check Engine" and "Shutdown Engine" lights will go on, and the engine will shut down in 30 seconds. NOTE: If the vehicle is in a hazardous place when the "Shutdown Engine" light goes on, the driver must immediately press the "Override/ Chk" button or the engine will shut down in 30 seconds. Pressing the button will give the driver an additional 30 seconds to move the vehicle. If this is still not enough time, the driver must press the button again for another 30-second delay before engine shutdown.
A Once the engine has shut down, cycle the ignition key off and then on, and press the "Override/Chk" button to restart the engine. 03/30/94 f600705 The cruise control and PTO governor options are controlled in one of two ways: A. If equipped with Jacobs engine brake controls, the cruise switches may be installed here. The location may vary depending on other vehicle options. By two switches on the instrument control panel ( Fig. 2.5 ). The "On/Off" switch turns on the cruise control option, and the spring-loaded "Set/Resume" switch selects the cruise speed or resumes cruise control after slowing down.
For PTO operation, the "On/Off" switch turns on the PTO, and the "Set/ Resume" switch either selects or resumes the engine operating speed. Fig. 2.5, Cruise Control Switches, Standard Location or By three optional buttons on the transmission shift knob ( Fig. 2.6 ). The "Pause" button allows the driver to temporarily interrupt cruise control. The "Resume" button allows the driver to resume the cruise speed after slowing down. The "Set" button allows the driver to select the cruise speed.
For PTO operation, the "Pause" button temporarily interrupts PTO opera- tion, the "Resume" button resumes PTO operation at the previously selected engine speed, and the "Set" button is used to select the engine operating speed. See Chapter 7 for complete instructions. 05/23/95 f260316 Caterpillar C-10, C-12, and C-15 Electronic Engine Operator Control Fig. 2.6, Transmission Shift Knob Buttons If the vehicle is equipped with Optimized Idle ® , the cruise control "On/Off" switch is also used to control this option. Optimized Idle can be used to keep the engine oil warm, recharge the battery, and maintain sleeper temperature when the vehicle is parked for long periods.
See Chapter 7 for more information and complete operating instructions. The Caterpillar C-10, C-12, and C-15 electronic en- gines use a computer (electronic control module) to automatically control engine timing and fuel injection. The electronic features of these engines include an electronic governor, fuel-to-air ratio control, program- mable engine ratings, injection timing control, fault analysis and recording, and a data link used for pro- gramming the electronic control module and trouble- shooting the system. 2.4