SEAL-DOOR 4322781 - Caterpillar

Table 2
Switch Panel Connector J2 Contact Descriptions
No. Type Pin Description
1 Input/Output Machine CAN Data Link +
2 Input/Output Machine CAN Data Link -
4 Output Washer
5 Output Wiper Intermittent 3
6 Output Wiper Intermittent 6
7 Output Wiper Low
8 Input Fine Swing Switch (If Equipped)
9 Input Quick Coupler Switch (If equipped)
Table 3
Switch Panel Connector J3 Contact Descriptions
No. Type Pin Description
1 Power +Battery
2 Ground Ground
3 Input Key Switch
4 Output Fault Alarm
5 Output Caution Lamp Relay
6 Output Quick Coupler Bypass Cut Solenoid (If Equipped)
7 Output Heavy Lift Solenoid (If Equipped)
10 Power + Battery
12 Output Travel Alarm
13 Output Quick Coupler Uncoupling Solenoid (If Equipped)
15 Output Chassis/Cab Light Relay
16 Output Boom Light Relay
19 Output Alternator R Terminal (P Terminal)
20 Input Quick Coupler Unlock Switch (If Equipped) One Touch Low Idle Switch
Illustration 7 g02658859
One-Touch Low Idle Switch (RH Joystick) and Schematic Symbol
(1) One Touch Low Idle Switch (SW-3)
(2) One Touch Low Idle Switch (SW-3) ConnectionsNote: SW-2 is a trigger switch and is not shown in Illustration 7.The one-touch low idle switch (1) is the lower button on the right joystick. The one-touch low idle switch will automatically reduce engine speed to 1050 RPM. Both the right and the left joysticks must be in the neutral position before the engine speed is reduced.Key Start Switch
Illustration 8 g02140333
Key Start Switch
The key start switch is an input of the engine and pump controller. The key start switch informs the ECM of an attempt to start the engine. Then, the ECM initiates the start procedure.The starting switch is a four position switch, and connects the battery supply terminal B to the other terminals.Usually the position of the switch is the OFF position. At this time the connected terminals are the B and C terminals only.When the switch is in the ON position, the connected terminals are B and R only. The key switch remains in this position without handling.When the switch is in the Start position, the connected terminals are B, R, and S. The key switch must be handled to remain in this position.When the key switch is in the EMERGENCY STOP position, the connected terminals are B and A only. The key switch must be handled to remain in this position.During normal machine operation, the start terminal of the key start switch is open. If the key start switch is placed in the START position, the start terminal will close. +battery voltage is supplied to the start terminal. When all starting conditions are satisfied, the ECM sends a +battery signal to the start relay and engine cranking begins.Note: After the key start switch is initially turned to the START position, the switch will not return to the START position from the ON position. The switch must be turned to the OFF position first. Then, the switch can be turned to the START position.Pedal Control
Illustration 9 g00629518
Attachment Pedal
(1) Schematic Symbol
(2) Attachment PedalThe pedal output is a pulse width modulated signal (PWM). The PWM output of the pedal in the center or neutral position is approximately 50 percent duty cycle. The PWM output of