PM620, PM622, PM820, PM822 and PM825 Cold Planers Electronic System Electronic Control Module (ECM)

Electronic Control Module (ECM) - ECM Locations

PM620, PM622, PM820, PM822 and PM825 Cold Planers Electronic System [UENR6406]

PM620, PM622, PM820, PM822 and PM825 Cold Planers Electronic System Electrical Input Components

PM620, PM622, PM820, PM822 and PM825 Cold Planers Electronic System Electrical Output Components

ELECTRICAL AND STARTING SYSTEM

ELECTRONICS GP-MACHINE

PM620, PM622, PM820, PM822 and PM825 Cold Planers Electronic System General Information

PM620, PM622, PM820, PM822 and PM825 Cold Planers Electronic System Features

PM620, PM622, PM820, PM822 and PM825 Cold Planers Electronic System Electronic Control Module (ECM) - ECM Locations

PM620, PM622, PM820, PM822 and PM825 Cold Planers Electronic System ECM Software - Install

PM620, PM622, PM820, PM822 and PM825 Cold Planers Electronic System ECM - Replace

1.1. Inputs

2.1. Outputs

3.1. Input/Output

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Illustration 1	g06032288
ECMs are located behind Left Rear panel

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Illustration 2	g06032311
ECMs are located behind Left Rear panel (1) Machine ECM (MID 39) (2) Transmission ECM (MID 81) (3) Steering ECM (MID 150)

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Table 1
Machine ECM (MID 39) Contact Description J1⁽¹⁾
No.⁽²⁾	Function	Type
1	Key Switch On	Key Switch Input
10	CAN C Data Link (-)	Data Link (-)
13	- Battery (1)	Battery Return
20	CAN C Data Link (+)	Data Link (+)
23	- Battery (2)	Battery Return
24	Remote Emergency Stop Switch	Switch to Battery
26	Identification Code 0	Switch to Ground Input
27	Identification Code 1	Switch to Ground Input
28	Identification Code 2	Switch to Ground Input
31	+ Battery (1)	Battery Power Input
32	Identification Code Enable	Switch to Ground Input
36	Fuel Level Sensor	Analog Input
39	+ Battery (2)	Battery Power Input
47	+ Battery (3)	Battery Power Input
48	Left Front Leg Lower Solenoid	Sourcing Driver Output
49	Left Front Leg Raise Solenoid	Sourcing Driver Output
50	PWM Driver Return (J1-48 - J1-52)	Sourcing Driver Return
51	Right Front Leg Lower Solenoid	Sourcing Driver Output
52	Right Front Leg Raise Solenoid	Sourcing Driver Output
55	Driver Return (J1-65 - J1-68)	Sourcing Driver Return
56	10 Volt Sensor Power Return	10V Supply Return
57	- Battery (3)	Battery Return
58	Rear Legs <Lift> Lower Solenoid	Sourcing Driver Output
59	Rear Legs <Lift> Raise Solenoid	Sourcing Driver Output
60	Driver Return (J1-58 - J1-62)	Sourcing Driver Return
61	Conveyor Swing Speed Solenoid	Sourcing Driver Output
62	Rear Legs Lift Speed Solenoid	Sourcing Driver Output
65	First Stage Conveyor Drive Forward Solenoid	Sourcing Driver Output
66	First Stage Conveyor Drive Reverse Solenoid	Sourcing Driver Output
67	Second Stage Conveyor Drive Forward Solenoid	Sourcing Driver Output
68	Second Stage Conveyor Drive Reverse Solenoid	Sourcing Driver Output
69	10 Volt Sensor DC Power Supply	10V Power Supply

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⁽¹⁾	The ECM responds to an active input only when all the necessary conditions are satisfied.
⁽²⁾	The connector contacts that are not listed are not used.

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Table 2
Machine ECM (MID 39) Contact Description J2⁽¹⁾
No.⁽²⁾	Function	Type
1	Neutral Start In (Switched 24V)	Switch to Battery Input
2	Left Front Leg Equalization Enable Solenoid	Sourcing Driver Output
3	Right Front Leg Equalization Enable Solenoid	Sourcing Driver Output
4	Dout Return 1	Sourcing Driver Return
5	Front Legs Equalization Enable Solenoid	Sourcing Driver Output
6	Left Rear Leg Equalization Enable Solenoid	Sourcing Driver Output
7	Right Rear Leg Equalization Enable Solenoid	Sourcing Driver Output
9	Conveyor <Lift> Raise Relay	Sinking Driver Output
10	Conveyor <Lift> Lower Relay	Sinking Driver Output
11	Conveyor <Swing> Left Relay	Sinking Driver Output
12	Conveyor <Swing> Right Relay	Sinking Driver Output
13	Dust Collector Relay	Sinking Driver Output
14	Alternator R-Terminal	R-Terminal (Alternator) Input
15	Left Rear Leg Cylinder Position Sensor	PWM Input
16	Left Front Leg Cylinder Position Sensor	PWM Input
17	Right Rear Leg Cylinder Position Sensor	PWM Input
18	Right Front Leg Cylinder Position Sensor	PWM Input
22	Digital Return	Digital Return
28	Conveyor Swing Unlock Switch (NO)	Switch to Ground Input
29	Conveyor Swing Unlock Switch (NC)	Switch to Ground Input
44	Ground Level Front Left Emergency Stop Switch	Switch to Ground Input
45	Ground Level Front Right Emergency Stop Switch	Switch to Ground Input
46	Ground Level Rear Left Emergency Stop Switch	Switch to Ground Input
47	Ground Level Rear Right Emergency Stop Switch	Switch to Ground Input
45	Ground Level Front Left Emergency Stop Switch	Switch to Ground Input
53	Ground Level Rear Right Horn Switch	Switch to Ground Input
54	Ground Level Rear Left Horn Switch	Switch to Ground Input
55	Ground Level Front Right Horn Switch	Switch to Ground Input
56	CAN A Data Link +	CAN Data Link (+)
58	Ground Level Front Left Horn Switch	Switch to Ground Input or Analog Input
64	CAN B Data Link +	CAN Data Link (+)
65	CAN B Data Link -	CAN Data Link (-)
68	CAN A Data Link -	CAN Data Link (-)

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⁽¹⁾	The ECM responds to an active input only when all the necessary conditions are satisfied.
⁽²⁾	The connector contacts that are not listed are not used.

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Table 3
Transmission ECM (MID 81) Contact Description J1⁽¹⁾
No.⁽²⁾	Function	Type
1	Key Switch On	Key Switch Input
10	CAN C Data Link (-)	Data Link (-)
11	5 VDC Sensor Power	Sensor Power Output
12	Right Front Side Plate Raise Solenoid
13	- Battery (1)	Battery Return
18	Rotor Speed Sensor	Diff Speed 6-
20	CAN Data Link (+)	Data Link (+)
21	5 VDC Sensor Return	Sensor Power Return
22	Hydraulic Oil Temperature Sensor	Analog Input
23	- Battery (2)	Battery Return
24	Remote Emergency Stop Switch	Switch to Battery
25	Ignition Key Switch (Crank Position)	Switch to Battery
26	Identification Code 0 (Open)	Switch to Ground Input
27	Identification Code 1 (Ground)	Switch to Ground Input
28	Identification Code 2 (Open)	Switch to Ground Input
31	+ Battery (1)	Battery Power Input
32	Identification Code Enable	Switch to Ground Input
33	Water Spray Pressure Switch	Switch to Ground Input
35	Hydraulic Oil Level Sensor	Switch to Ground Input
36	Water Spray Pressure Sensor	Analog Active
39	+ Battery (2)	Battery Power Input
40	Hydraulic Charge Filter Bypass Switch	Switch to Ground Input
47	+ Battery (3)	Battery Power Input
48	Drive Pump #1 Forward Control Solenoid	Sourcing Driver Output
49	Drive Pump #1 Reverse Control Solenoid	Sourcing Driver Output
50	PWM Driver Return 1	Sourcing Driver Return
51	Drive Pump #2 Forward Control Solenoid	Sourcing Driver Output
52	Drive Pump #2 Reverse Control Solenoid	Sourcing Driver Output
54	Drive Pump Solenoid Return (J1-48 - J1-52)	Sourcing Driver Return
55	Clutch, Belt, Water, Brake Solenoid Return	Sourcing Driver Return
56	10 VDC Return	Sensor Power Return
57	- Battery (3)	Battery Return
58	Right Rear Drive Motor Solenoid	Sourcing Driver Output
59	Left Rear Drive Motor Solenoid	Sourcing Driver Output
60	Drive Motor Solenoid Return (J1-58 - J1-62)	Sourcing Driver Return
61	Right Front Drive Motor Solenoid	Sourcing Driver Output
62	Left Front Drive Motor Solenoid	Sourcing Driver Output
65	Parking Brake Solenoid	Sourcing Driver Output
66	Rotor Clutch Solenoid	Sourcing Driver Output
67	Rotor Belt Tension Solenoid	Sourcing Driver Output
68	Water Spray Pump Forward Control Solenoid	Sourcing Driver Output
69	+10 VDC Power Supply	Sensor Power Output

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⁽¹⁾	The ECM responds to an active input only when all the necessary conditions are satisfied.
⁽²⁾	The connector contacts that are not listed are not used.

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Table 4
Transmission ECM (MID 81) Contact Description J2⁽¹⁾
No.⁽²⁾	Function	Type
1	Neutral Start In (Switched 24V)	Switch to Battery Input
2	Right Front Side Plate Lower Solenoid	Sourcing Driver Output
3	Right Front Side Plate Float Solenoid	Sourcing Driver Output
4	Dout Driver Return 1	Sourcing Driver Return
5	Right Rear Side Plate Raise Solenoid	Sourcing Driver Output
6	Right Rear Side Plate Lower Solenoid	Sourcing Driver Output
7	Right Rear Side Plate Float Solenoid	Sourcing Driver Output
9	Anti-Slab Raise Relay	Sinking Driver Output
10	Anti-Slab Lower Relay	Sinking Driver Output
11	Anti-Slab Float Relay	Sinking Driver Output
13	Tow Mode Parking Brake Relay	Sinking Driver Output
15	Right Front Drive Motor Speed Sensor #1	PWM Input
16	Right Front Drive Motor Speed Sensor #2	PWM Input
17	Left Front Drive Motor Speed Sensor #1	PWM Input
18	Left Front Drive Motor Speed Sensor #2	PWM Input
19	Tow Mode System Enable Relay	Sinking Driver Output
20	Water Spray Supply Relay	Sinking Driver Output
21	Starter Motor Relay	PWM Input
22	Hydraulic Oil Temperature Sensor Return	Digital Return
24	Right Rear Drive Motor Speed Sensor #1	PWM Input
25	Right Rear Drive Motor Speed Sensor #21	PWM Input
26	Left Rear Drive Motor Speed Sensor #1	PWM Input
27	Left Rear Drive Motor Speed Sensor #2	PWM Input
32	Parking Brake Oil Pressure Sensor	PWM Input
40	Right Side Plate Front Cylinder Position Sensor	PWM Input
41	Right Side Plate Rear Cylinder Position Sensor	PWM Input
48	Drive Circuit #1 Pressure Sensor	PWM Input
49	Drive Circuit #2 Pressure Sensor	PWM Input
56	CAN A Data Link +	CAN Data Link (+)
64	CAN B Data Link +	CAN Data Link (+)
65	CAN B Data Link -	CAN Data Link (-)
68	CAN A Data Link -	CAN Data Link (-)

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⁽¹⁾	The ECM responds to an active input only when all the necessary conditions are satisfied.
⁽²⁾	The connector contacts that are not listed are not used.

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Table 5
Steering ECM (MID 150) Contact Description J1⁽¹⁾
No.⁽²⁾	Function	Type
1	Key Switch On	Key Switch Input
10	CAN C Data Link (+)	Data Link (+)
12	Left Rear Side Plate Raise Solenoid	Sourcing Driver Output
13	- Battery (1)	Battery Return
20	CAN C Data Link (-)	Data Link (-)
23	- Battery (2)	Battery Return
24	Remote Emergency Stop Switch	Switch to Battery
26	Identification Code 0 (Open)	Switch to Ground Input
27	Identification Code 1 (Open)	Switch to Ground Input
28	Identification Code 2 (Ground)	Switch to Ground Input
31	+ Battery (1)	Battery Power Input
32	Identification Code Enable	Switch to Ground Input
37	Water Tank Level Sensor Location Code	Switch to Ground Input
39	+ Battery (2)	Battery Power Input
41	Moldboard Raised Position Switch (NO)	Switch to Ground Input
42	Moldboard Lowered Position Switch (NO)	Switch to Ground Input
47	+ Battery (3)	Battery Power Input
48	Rear Steer Left Solenoid	Sourcing Driver Output
49	Rear Steer Right Solenoid	Sourcing Driver Output
50	Moldboard Solenoid Return (J1-65 - J1-68)	Sourcing Driver Return
51	Rear Toe Out Solenoid	Sourcing Driver Output
52	Rear Toe In Solenoid	Sourcing Driver Output
54	Rear Steer Solenoid Return (J1-48 - J1-52)	Sourcing Driver Return
55	Front Steer Solenoid Return (J1–58 - J1-62)	Sourcing Driver Return
56	10 Volt Sensor DC Power Return	Sensor Power Return
57	- Battery (3)	Battery Return
58	Front Steer Left Solenoid	Sourcing Driver Output
59	Front Steer Right Solenoid	Sourcing Driver Output
61	Front Toe Out Solenoid	Sourcing Driver Output
62	Front Toe In Solenoid	Sourcing Driver Output
65	Moldboard Lift Solenoid	Sourcing Driver Output
66	Moldboard Lift Solenoid	Sourcing Driver Output
67	Moldboard Lift Solenoid	Sourcing Driver Output
68	Moldboard Lift Solenoid	Sourcing Driver Output
69	+10 Volt DC Sensor Power Supply	Sensor Power Output

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⁽¹⁾	The ECM responds to an active input only when all the necessary conditions are satisfied.
⁽²⁾	The connector contacts that are not listed are not used.

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Table 6
Steering ECM (MID 150) Contact Description J2⁽¹⁾
No.⁽²⁾	Function	Type
1	Neutral Start In (Switched 24V)	Switch to Battery Input
2	Left Rear Side Plate Lower Solenoid	Sourcing Driver Output
3	Left Rear Side Plate Float Solenoid	Sourcing Driver Output
4	Dout Driver Return 1	Sourcing Driver Return
5	Left Front Side Plate Raise Solenoid	Sourcing Driver Output
6	Left Front Side Plate Lower Solenoid	Sourcing Driver Output
7	Left Front Side Plate Float Solenoid	Sourcing Driver Output
9	Right Grade Control Ski Lower Relay	Sinking Driver Output
10	Left Grade Control Ski Lower Relay	Sinking Driver Output
11	Rotor Door Open Relay	Sinking Driver Output
12	Refueling Pump Relay	Sinking Driver Output
13	Rotor Door Close Relay	Sinking Driver Output
15	Front Steering Cylinder Position Sensor	PWM Input
16	Front Toe Cylinder Position Sensor	PWM Input
17	Rear Steering Cylinder Position Sensor	PWM Input
18	Rear Toe Cylinder Position Sensor	PWM Input
19	High-Pressure Wash Relay	Sinking Driver Output
20	Water Tank Refull Pump Relay	Sinking Driver Output
22	Digital Return	Digital Return
23	Rotor Door Switch (NO)	Switch to Ground
28	Rotor Door Switch (NC)	Switch to Ground
37	Water Tank Level Sensor	Sourcing Driver Output
40	Left Side Plate Front Cylinder Position Sensor	PWM Input
41	Left Side Plate Rear Cylinder Position Sensor	PWM Input
56	CAN A Data Link +	CAN Data Link (+)
58	Right Grade Control Ski Position Sensor	Sourcing Driver Output
59	Left Grade Control Ski Position Sensor	Sourcing Driver Output
64	CAN B Data Link +	CAN Data Link (+)
65	CAN B Data Link -	CAN Data Link (-)
68	CAN A Data Link -	CAN Data Link (-)

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⁽¹⁾	The ECM responds to an active input only when all the necessary conditions are satisfied.
⁽²⁾	The connector contacts that are not listed are not used.

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Illustration 3	g00554751
Electronic Control Module (ECM)

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Illustration 4	g00556522
Machine Harness Connectors J1 and J2 that mate to the ECM.

The ECM evaluates information from inputs and information from memory to decide a course of action. After the ECM receives the information from input and information from memory, the ECM will send a corresponding response through the outputs. The ECM input and outputs connect to the machine harness by two 70-pin connectors (J1 and J2).

Note: Refer to the Testing and Adjusting, "System Schematic" section of this manual for connector contact descriptions on the ECM.

Inputs

The machine has several input devices. The ECM receives information from components about machine operations. The machine utilizes switched inputs and sensor inputs. Switches provide signals to the switched inputs of the ECM. The possible outputs of a switch are listed: an open signal, a grounded signal and a + battery signal. Sensors provide a signal to the ECM that can vary in a frequency cycle or a duty cycle.

Outputs

The ECM sends electrical signals through the outputs. The outputs can create an action or the outputs can provide information to other ECM modules.

Input/Output

Each ECM uses the Cat Data Link to communicate with each other. The data link is bidirectional. The data link allows the ECM to receive information. The data link allows the ECM to send information. The data link allows the sharing of information with other ECM modules.