854K Wheel Dozer Electrohydraulic System Caterpillar

Connector Contact Description

Usage:

854K H8M

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Illustration 1	g00554751
Electronic Control Module (ECM)

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Illustration 2	g01090860
Machine Harness Connectors J1 and J2 that mate to the ECM.

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Table 1
Contact Description J1
No. ⁽¹⁾	Function
1	Key Switch - Run
10	Cat Data Link (+)
11	+5V Supply
12	Pilot On/Off Solenoid
13	- Unswitched Battery
20	Cat Data Link (-)
21	5V Sensor Return
22	Hydraulic Oil Temperature
23	- Unswitched Battery
26	ECM Location 0
27	ECM Location 1
28	ECM Location 2
29	HVAC Recirculation Filter Cab Temp
30	HVAC Evaporator Thermostat
31	+ Unswitched Battery
32	ECM Location Code
33	Implement Lockout Switch (N/O)
34	Implement Lockout Switch (N/C)
35	Implement Pilot Oil Filter Bypass Switch
36	HVAC Temperature Dial
37	HVAC Blower Speed Dial
38	+ Unswitched Battery
39	+ Unswitched Battery
40	Right Steering Case Drain Filter Switch
41	IMPL Function Select SW (N/O)
42	IMPL Function Select SW (N/C)
43	Left Steering Case Drain Filter Switch
44	+8V Supply
45	-8V Return
46	+ Unswitched Battery
47	+ Unswitched Battery
48	Raise Solenoid 1
49	Lower Solenoid 1
50	Solenoid Return
51	Tilt Left Tip Back Solenoid
52	Tilt Right Tip Back Solenoid
53	HVAC Louver Temperature
54	PWM Driver Return 11 - 12
55	Solenoid Return
56	PHS 10V Power Return
57	- Unswitched Battery
60	Solenoid Return
63	Right Implement Case Drain Filter Switch
64	Rear Implement Case Drain Filter Switch
65	Center Pump Solenoid
66	Right Pump Solenoid/Tilt Regen Solenoid
67	Left Front Pump Solenoid
68	Left Rear Pump / Dual Pressure Relief Solenoid
69	+10 V Supply
70	- Unswitched Battery

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The connector contacts that are not listed are not used.

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Table 2
Contact Description J2
No. ⁽¹⁾	Function
1	Neutral Start In
2	Forward Horn Relay
3	HVAC A/C Clutch
4	2A On/Off Return 1-3
5	Dual Tilt Solenoid 1
6	Dual Tilt Solenoid 2
8	On/Off Return
14	R-Terminal
17	Lift Cylinder Head End Pressure Sensor
18	Lift Cylinder Rod End Pressure Sensor
19	HVAC Blower Control Signal
21	HVAC Water Valve Control Signal
23	Tilt Mode SW (N/O)
24	Lift Lever Position Sensor
25	Tilt Lever Position Sensor
28	Steering Pilot Bypass Switch
29	Implement Cooling Bypass Filter Switch
30	Left Implement Case Drain Filter Switch
31	Front Center Implement Pump Filter Switch
32	Rotary Lift Position Sensor
33	Rotary Tilt Position Sensor
34	Tilt / Left Steering Pump Pressure Sensor
35	Center Steering Pump Pressure Sensor
36	Steering Tank Level Switch
37	Implement Tank Low Level Switch
38	Primary Steering Pressure Switch
39	Tilt Mode Selection SW (N/C)
41	Implement Pilot Pressure
42	Steering Oil Temperature
43	Steering Pilot Oil Pressure Sensor
44	Wiper Fluid Add Switch
45	Engine Oil Level Switch
46	Fan Return Filter Bypass Switch
47	Fan Motor Pump Case Drain Switch
48	Demand Fan Pressure Sensor
49	Tilt Pump Pressure Sensor
50	Front Pump Drive Oil Temperature
51	Left Valve Pressure Sensor
52	Steer Tank Oil Level Full Switch
53	Implement Tank Oil Level Full Switch
55	Brake Oil Level Switch
56	J1939 High
57	J1939 Shield
60	HVAC On Switch
61	HVAC Auto Climate Control Switch
62	HVAC Refrigerant Circuit Switch
64	Can B High
65	Can B Low
66	Can B Shield
67	J1939 High
68	J1939 Low
69	J1939 Shield
70	J1939 Low