ELECTRONIC TECHNICIAN (FIELD) LEVEL TROUBLESHOOTING - Continued
DC voltages are present at generator set electrical components even with generator set shut
down. Avoid shorting any positive with ground/negative. Failure to comply can cause injury to
personnel and damage to equipment.
Field Level Troubleshooting for the Tactical Quiet Generator uses the Caterpillar Electronic Technician (ET)
software and the Caterpillar Communication Adapter Group as described in WP 0012. References to Caterpillar
ET are included in other sections of the Field level troubleshooting procedures. All other Field level troubleshooting
should be performed before progressing to the ELECTRONIC TECHNICIAN procedures.
ELECTRONIC TECHNICIAN (ET) TROUBLESHOOTING
Air Inlet Heater Circuit Test.
System Operation Description:
Use this procedure to troubleshoot any suspect problems with the air inlet heater circuit (Figure 1). This
procedure augments Unit (Field) procedures for the following diagnostic codes displayed on the GSC:
617-E-05 air inlet heater relay open/current below normal
617-E-06 air inlet heater relay grounded/current above normal
617-E-05 code. Current is below normal or circuit is open.
On EMCP set ENGINE CONTROL switch to OFF/RESET. Set Battery
Disconnect Switch to OFF. Set DEAD CRANK SWITCH to OFF.
Connect the Caterpillar Electronic Technician (Cat ET) to connector CDC-P7 and