Driver Controls and Instruments conditions are detected. See the Caterpillar electronic engine troubleshooting manual for troubleshooting pro- cedures. The cruise control and PTO governor options are con- trolled in two ways: The CRUISE ON and SET/RESUME switches on the instrument control panel. See Fig. 3.14 . The CRUISE ON switch turns on the cruise control, and the SET/ RESUME switch is used to select the cruise speed, or to resume cruise control after slowing down. For PTO operation, the CRUISE ON switch turns on the PTO, and the SET/RESUME switch is used to either select or resume the engine operating speed.
The dash-mounted cruise control switches are also used to check the elec- tronic control module (ECM) for system faults when the engine is not running. The SET/RESUME switch is spring-loaded to return to neutral. See Chapter 4 for complete instructions. 10/28/94 f600362a Fig. 3.13, Interrupt Switch, Optional timing control, fault analysis and recording, and a data link used for programming the electronic control module and troubleshooting the system. All Caterpillar electronic engines have a check engine indicator in the lightbar located below the speedometer and tachometer.
This indicator light illuminates or flashes if the engine oil pressure is low, the coolant temperature is high, the intake manifold air temperature is high, the coolant is low (optional), or whenever there is a problem within the electronic engine system. Some vehicles equipped with Caterpillar electronic engines have an automatic engine shutdown option. This option will shut off fuel to the engine if potentially damaging The optional PAUSE, RESUME, and SET buttons on the transmission shift knob. See Fig. 3.15 . The PAUSE button allows the driver to temporarily interrupt cruise control. The RESUME button allows the driver to re- sume 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 operation, the RESUME button resumes PTO op- eration at the previously selected engine speed, and the 3.10