INSTALLER-SEAL 1987154 - Caterpillar

Table 1
Alert Indicator No. (1) EMS Connector Contact No. Type
1 6 Switch Input - Uncommitted
2 12 Switch Input - Uncommitted
3 5(2) Switch Input - Uncommitted
3 18(2) Switch Input - Speed Sensitive
4 8 Switch Input - Uncommitted
5 4 Switch Input - Uncommitted
6 7 Switch Input - Uncommitted
7 19 Switch Input - Uncommitted
8 3 Switch Input
9 14 Switch Input - Uncommitted
10 17 Switch Input - Uncommitted
(1) To locate the alert indicators by the assigned number, see the EMS Display illustration.
(2) Connector contacts 5 and 18 are both used to control indicator 3. Contact 5 is a normal switch input. Connector contact 18 is a speed sensitive switch input. See Switch Input - Speed Sensitive under the topic Monitor.
Illustration 1 g01024806
EMS Display Area
(1) Alert IndicatorsTwo switch input conditions are diagnosed: open and grounded. An alert indicator FLASHES, when the corresponding switch type input is open.EMS monitors the switch inputs. With the machine shutdown many switch inputs are open. These open switch inputs cause the corresponding alert indicators to flash if the key start switch is ON.Note: A switch input may be activated by more than one switch. The switches would be wired in series, see the Operation and Maintenance Manual for the machine being serviced.