PM310, PM312, and PM313 Cold Planers Electronic System Caterpillar

Electronic Control Module (ECM)

Usage:

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Illustration 1	g06231564
ECMs are located behind the shown panel at the Rear of the machine

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Illustration 2	g06231637
The rear panel is shown removed to allow access to the ECMs (1) Machine ECM (MID 39) (2) Transmission ECM (MID 81)

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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 Rear Leg Lower Solenoid	Sourcing Driver Output
49	Left Rear Leg Raise Solenoid	Sourcing Driver Output
50	PWM Driver Return (J1-67, J1–68)	Sourcing Driver Return
51	Right Rear Leg Lower Solenoid	Sourcing Driver Output
52	Right Rear Leg Raise Solenoid	Sourcing Driver Output
54	Driver Return (J1-51, J1-52)	Sourcing Driver Return
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	Conveyor Drive Forward Solenoid	Sourcing Driver Output
59	Conveyor Drive Reverse Solenoid	Sourcing Driver Output
60	Driver Return (J1-58 - J1-62)	Sourcing Driver Return
61	Engine Cooling Fan Solenoid #2	Sourcing Driver Output
62	Moldboard Pressure Control Solenoid	Sourcing Driver Output
65	Front Steer Left Solenoid	Sourcing Driver Output
66	Front Steer Right Solenoid	Sourcing Driver Output
67	Rear Steer Left Solenoid	Sourcing Driver Output
68	Rear Steer Right 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	Front Legs <Lift> Lower Solenoid	Sourcing Driver Output
3	Front Legs <Lift> Raise Solenoid	Sourcing Driver Output
4	Dout Return 1	Sourcing Driver Return
5	Moldboard Lift Solenoid	Sourcing Driver Output
6	Moldboard Boost Pressure Solenoid	Sourcing Driver Output
7	Moldboard Float 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
19	E-Stop to Engine ECM	Switch to Ground Input
20	High Pressure Wash Relay	Sinking Driver Output
21	Dout	Power Return
22	Digital Return	Digital Return
24	Service Height Proximity Sensor	Switch to Ground Input
25	Moldboard Cylinder Position Sensor	PWM Input
36	High Pressure Wash Control Switch (NO)	Switch to Ground Input
40	Front Steer Cylinder Position Sensor	PWM Input
41	Rear Steer Cylinder Position Sensor	PWM Input
44	Ground Level Front Left Emergency Stop Switch	Switch to Ground Input
46	Ground Level Rear Left Emergency Stop Switch	Switch to Ground Input
47	Upper Right Emergency Stop Switch	Switch to Ground 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 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 Side Plate Raise Solenoid	Sourcing Output Driver
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
34	Hydraulic Oil Return Filter Switch	Switch to Ground Input
35	Hydraulic Oil Level Sensor	Switch to Ground Input
36	Water Spray Pressure Sensor	Analog Active
37	Water Pressure Differential Sensor	Analog Active
39	+ Battery (2)	Battery Power Input
40	Hydraulic Charge Filter Bypass Switch	Switch to Ground Input
42	Right Rear Leg Swing In Pin Position Switch (N/O)	Switch to Ground Input
43	Right Rear Leg Swing Out Pin Position Switch (N/O)	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	Propel Equal Flow Divider Solenoid	Sourcing Driver Output
52	Propel Mode Shift Solenoid	Sourcing Driver Output
54	Drive Pump Solenoid Return (J1-48 - J1-52)	Sourcing Driver Return
55	Clutch, Belt, Water, Brake Solenoid Return (J1-65 - 68)	Sourcing Driver Return
56	10 VDC Return	Sensor Power Return
57	- Battery (3)	Battery Return
58	Right Rear Leg Swing In Solenoid	Sourcing Driver Output
59	Right Rear Leg Swing Out Solenoid	Sourcing Driver Output
60	Drive Motor Solenoid Return (J1-58 - J1-62)	Sourcing Driver Return
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 Side Plate Lower Solenoid	Sourcing Driver Output
3	Right Side Plate Float Solenoid	Sourcing Driver Output
4	Dout Driver Return 1	Sourcing Driver Return
5	Left Side Plate Raise Solenoid	Sourcing Driver Output
6	Left Side Plate Lower Solenoid	Sourcing Driver Output
7	Left 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
12	Canopy Raise Relay	Sinking Driver Output
13	Canopy Lower 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 Rear Drive Motor Speed Sensor #1	PWM Input
18	Left Rear Drive Motor Speed Sensor #2	PWM Input
19	Aux Power Unit Motor Disable 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
32	Parking Brake Oil Pressure Sensor	PWM Input
37	Water Fill Control Switch	Switch to Ground Input
40	Right Side Plate Front Cylinder Position Sensor	PWM Input
41	Right Side Plate Rear Cylinder Position Sensor	PWM Input
42	Left Side Plate Front Cylinder Position Sensor	PWM Input
43	Left 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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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.