ENGINE OPERATION - Operating Instructions transmitters, etc.) can generate and use radio frequency energy that may cause electromagnetic interference (EMI) between the accessory and the electronically controlled fuel system. Under these conditions, PACCAR is not liable for any performance problems with either the fuel system or the accessory. EMI is not considered by PACCAR to be an engine failure and therefore is not warrantable. If any interference condition is noticed, follow these suggestions to reduce the amount of EMI:
1 NOTE For engines equipped with an elec- tronic control module (ECM), ensure the ignition switch is turned OFF for a minimum of 100 seconds prior to dis- connecting the continuous (unswitch- ed) battery power supply. If the un- switched battery power supply is dis- connected in less than 100 seconds after the ignition switch is turned OFF, active fault codes and incorrect ECM information may occur. 1. Locate the accessory receiving antenna further away. 2. Check with the accessory supplier representative in your area to: Accurately calibrate the accessory for proper frequency, power output, and sensitivity.
Determine the optimum antenna location by obtaining antenna reflective energy data measurements. Ensure that the optimum antenna type and mounting arrangement is being used. Ensure the accessory equipment is properly constructed for maximum filtering to reject incoming electromagnetic noise. System EMI Susceptibility PACCAR products are designed and tested for minimum sensitivity to incoming electromagnetic energy. The fuel system EMI susceptibility has been designed with a high tolerance against EMI and in most normal circumstances, if not all, electromagnetic energy-emitting devices that meet the Federal Communications Commission legal requirements should cause no interference.
CAUTION Failure to follow the correct shutdown procedure may result in damage to the turbocharger and shorten the turbo- charger life. System EMI Radiation Levels Electromagnetic Interference Electronic components are required to pass various PACCAR and industry EMI specifications. Our testing has shown that when the engine is properly installed and maintained, it will not interfere with properly installed onboard communication equipment. Information on electromagnetic interference (EMI). If not installed correctly, some vehicle accessories (CB radios, mobile Y53-1183-1E1 (04/16/18) 27