Troubleshooting784C, 785C, 789C, 793C and 793D Off-Highway Truck/Tractors Power Train Electronic Control System.Backup Alarm Always OnSystem Operation Description:The ECM applies power to the relay whenever the ECM receives a signal from the shift lever switch.If the backup alarm is always ON, check these items. * The harness circuit is shorted to the +battery circuit. * The ECM has failed. * The relay has failed.Test...
Wednesday, May 20, 2009
Tuesday, May 12, 2009
Troubleshooting Backup Alarm Always Off
Troubleshooting784C, 785C, 789C, 793C and 793D Off-Highway Truck/Tractors Power Train Electronic Control System. Backup Alarm Always OffSystem Operation Description:The ECM applies power to the backup alarm whenever the ECM receives a reverse signal from the position sensor for the transmission/chassis ECM.One of the following conditions can cause the backup alarm to remain OFF: * The backup alarm has failed. *...
Tuesday, May 5, 2009
Backup Alarm Highway Truck Caterpillar
Systems Operation784C, 785C, 789C, 793C and 793D Off-Highway Truck/Tractors Power Train Electronic Control System Backup Alarm Backup Alarm - The alarm sounds when the transmission direction selector is in the REVERSE position. The alarm alerts the people behind the machine that the machine is backing up.The backup alarm is on the rear of the machine.A three-position switch is on the rear of the backup alarm. The...
Subscribe to:
Posts (Atom)