M313C, M315C, M316C, M318C, M318C MH, M322C and M322C MH Excavators Electronic System Electronic Control Module (ECM) Caterpillar

Electronic Control Module (ECM)

M313C, M315C, M316C, M318C, M318C MH, M322C and M322C MH Excavators Electronic System [RENR5558]

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M313C, M315C, M316C, M318C, M318C MH, M322C and M322C MH Excavators Electronic System Electronic Control Module (ECM)

1.1. Inputs

2.1. Outputs

3.1. Input/Output

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Illustration 1	g00925940
(3) Fuel Pump Switch (4) Machine ECM

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Illustration 2	g00554751
Electronic Control Module (ECM)

The Machine ECM makes decisions based on the information from inputs and information from memory. After the Machine ECM receives the information from inputs and information from memory, the Machine ECM will send a corresponding response through the outputs. The inputs and outputs of the Machine ECM connect to the machine harness by two 70 pin connectors (J1 and J2).

Inputs

The machine has several input devices. The Machine Control ECM receives information from components about machine operations. The machine has switch-type inputs and sensor-type inputs. Switches provide signals to the switch inputs of the ECM. The possible outputs of a switch are listed: an open signal, a grounded signal and + battery signal. Sensors provide a signal to the ECM that constantly changes. The inputs to the Machine Control ECM are listed in the tables for the 70 pin connector.

Outputs

The Machine Control ECM sends electrical signals through the outputs. The outputs can create an action or the outputs can provide information to the Machine Control ECM. The outputs for the Machine Control ECM are listed in the tables for the 70 pin connector.

Input/Output

The engine ECM and the machine ECM use the Cat Data Link in order 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 electronic control modules.

The Machine ECM, the Monitor, and the Soft Switch Panel use the CAN 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.

For more information on the data links, see Systems Operation, "Data Link".

A module identifier (MID) is assigned to each ECM. The MID for the Machine Control ECM is the number 039.

Note: The following table indicates the ECM contact connections for machines with the following serial numbers:

(BDX1-2000)
(BCZ1-2000)
(BEB1-2000)
(BDK1-2000)
(BDY1-2000)
(BDR1-2000)
(BDM1-2000)

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Table 1
Machine Control ECM - J1 Connections
No. ⁽¹⁾	Function	Type
2	Overload Warning Device Switch	Switch Input
3	Hydraulic Oil Clog Switch	Switch Input
5	Alternator R Terminal	Input
6	CAN Data Link -	Input/Output
7	Cat Data Link -	Input/Output
8	Cat Data Link +	Input/Output
9	ECM Ground Return	ECM Ground
10	5 Volt Sensor Supply	Power
11	8 Volt Sensor Supply	Power
12	Analog Sensor Return	ECM Ground
13	10 Volt Sensor Supply	Power
14	Boom Angle Limit Sw	Switch Input (Open / Ground)
15	Coolant Level Sw	Switch Input (Open / Ground)
16	Brake Oil Accumulator Pressure Sw	Switch Input (Open / Ground)
17	Limp Home Mode Sw	Switch Input (Open / Ground)
18	CAN Data Link +	Input/Output
19	CAN Shield
24	Stabilizer Pressure Sw	Switch Input (Open / Ground)
25	Hydraulic Oil Level Sw	Switch Input (Open / Ground)
26	Air Filter Clog Sw	Switch Input (Open / Ground)
28	Forward Travel Pressure Sw	Switch Input (Open / Ground)
29	Generator Enable Sw	Switch Input (Open / Ground)
30	Reverse Travel Pressure Sw	Switch Input (Open / Ground)
36	Swing Brake Joystick Sw	Switch Input (Open / Ground)
37	Quick Coupler Pressure Sw	Switch Input (Open / Ground)
38	Fuel Pump Sw	Switch Input (Open / Ground)
39	Swing Pressure Sw	Switch Input (Open / Ground)
44	Travel Pedal Limit Reached	Switch Input (Open / Ground)
45	Travel Pedal Limit Not Reached	Switch Input (Open / Ground)
46	One Touch Low Idle Sw	Switch Input (Open / Ground)
47	Operator Service Brake Pressure Sw	Switch Input (Open / Ground)
51	Fuel Level Sensor	Sensor Input
52	Transmission Pressure Sensor	Sensor Input
54	Armrest Position Sw (Down)	Switch Input (Open / Ground)
55	Armrest Position Sw (Up)	Switch Input (Open / Ground)
56	Service Brake Pedal Unlocked	Switch Input (Open / Ground)
57	Service Brake Pedal Locked	Switch Input (Open / Ground)
58	Key Sw On	Key Switch Input
61	Hydraulic Oil Temperature Sensor	Sensor Input
62	Main Pump Swashplate Angle Sensor	Sensor Input

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^( 1 )

The connector contacts that are not listed are not used. The connector has 70 contacts.

____________________

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Table 2
Machine Control ECM - J2 Connections
No. ⁽¹⁾	Function	Type
1	+ Battery (24V)	Power
2	- Battery	Ground
4	Brake Light (Right)	Power Output
12	Return	ECM Ground
13	Return	ECM Ground
15	Quick Couple Sol	Proportional Driver
16	Brake Light (Left)	Power Output
17	Fuel Pump Relay	Proportional Driver
22	- Battery	Ground
22	- Battery	Ground
24	Hydraulic Demand Fan Sol	Proportional Driver
25	Generator Sol	Proportional Driver
30	Attachment Pedal Pressure Sw (Back)	Switch To + Battery
31	Attachment Pedal Pressure Sw (Front)	Switch To + Battery
32	AESC Control Line	Sinking Driver
33	Implement Lockout Relay	Sinking Driver
36	Return	ECM Ground
37	Return	ECM Ground
38	Joystick Button Activation	Switch To + Battery
39	Key Start Input	Key Start Switch
40	Auxiliary Hydraulics Sol Number 2	Proportional Driver
41	Auxiliary Hydraulics Sol Number 1	Proportional Driver
44	Travel Alarm	On/Off Driver
45	Implement Lockout Sol	On/Off Driver
46	- Battery	Ground
47	+ Battery	Power
48	Main Pump Sol	Proportional Driver
49	Return	ECM Ground
50	Travel Activation Sol	Proportional Driver
51	Swing Brake Sol	Proportional Driver
52	Return	ECM Ground
55	Parking Brake Sol	Sol Output (On/Off)
56	- Battery	Ground
57	+ Battery	Power
58	Swing Pump Sol	Proportional Driver
59	Return	ECM Ground
60	Travel Lock Magnet	Proportional Driver
61	Travel Speed Sol	Proportional Driver
62	High Pressure Sol	Proportional Driver
63	One-Way or Two-Way Flow Sol or Hammer Sol	Proportional Driver
64	Creeper Speed Sol	Proportional Driver
65	Oscillating Axle Sol	Proportional Driver
68	Starter Relay	On/Off Driver
69	- Battery	Ground
70	+ Battery	Power

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^( 1 )

The connector contacts that are not listed are not used. The connector has 70 contacts.

Note: The following table indicates the ECM contact connections for machines with the following serial numbers:

(BDX2001-UP)
(BCZ2001-UP)
(BEB2001-UP)
(BDK2001-UP)
(BDY2001-UP)
(BDR2001-UP)
(BDM2001-UP)
(H2A1-UP)
(H2B1-UP)
(H2C1-UP)
(H2D1-UP)
(H2E1-UP)
(H2F1-UP)
(H2G1-UP)

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Table 3
Machine Control ECM - J1 Connections
No. ⁽¹⁾	Function	Type
2	Overload Warning Device Sw	Freq/ PWM Input
3	Hydraulic Oil Clog Sw	Freq/ PWM Input
4	Limp Home Sw 1	Freq/ PWM Input
5	Alternator R Terminal	Input
6	CAN Data Link -	Input/Output
7	AVS Data Link -	Input/Output
8	AVS Data Link +	Input/Output
9	Switch Return	ECM Ground
10	Trans Press Sensor (5 Volt)	Power
11	Hyd Oil Temp Sensor (8 Volt)	Power
12	Sensor Return	ECM Ground
13	ThmbWhl Pos Sensor (10 Volt)	Power
14	Boom Angle Limit Sw	Freq/ PWM Input
15	Coolant Level Sw	Freq/ PWM Input
16	Brake Oil Accumulator Press Sw	Freq/ PWM Input
17	Limp Home Sw 2	Freq/ PWM Input
18	CAN Data Link +	Input/Output
24	Trans Output Speed Sensor	Freq/ PWM Input
25	Hydraulic Oil Level Sw	Freq/ PWM Input
26	Air Filter Clog Sw	Freq/ PWM Input
28	Forward Travel Pressure Sw	Switch Input (Open / Ground)
29	Generator Enable Sw	Switch Input (Open / Ground)
30	LH Joystick Trigger Sw	Switch Input (Open / Ground)
31	Main Pump Press Sw	Switch Input (Open / Ground)
36	Swing Brake Sw (LH Joystick)	Switch Input (Open / Ground)
37	Quick Coupler Pressure Sw	Switch Input (Open / Ground)
38	Refueling Pump Sw	Switch Input (Open / Ground)
39	Swing Pump Pilot Press Sw	Switch Input (Open / Ground)
44	HCR Door Sw	Switch Input (Open / Ground)
45	Hyd Modulation Enable Sw	Switch Input (Open / Ground)
46	One Touch Low Idle Sw	Switch Input (Open / Ground)
47	Service Brake Pressure Sw	Switch Input (Open / Ground)
51	Fuel Level Sensor	Sensor Input
52	Transmission Pressure Sensor	Sensor Input
54	Armrest Position Sw (Down)	Switch Input (Open / Ground)
55	Armrest Position Sw (Up)	Switch Input (Open / Ground)
56	Service Brake Pedal Unlocked	Switch Input (Open / Ground)
57	Service Brake Pedal Locked	Switch Input (Open / Ground)
58	Key Sw On	Key Switch Input
60	Hyd Oil Temp Sensor	PWM Input
61	Travel Pedal Position Sensor	Analog Input
62	Aux Pedal Position Sensor	Analog Input

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^( 1 )

The connector contacts that are not listed are not used. The connector has 70 contacts.

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Table 4
Machine Control ECM - J2 Connections
No. ⁽¹⁾	Function	Type
1	+ Battery (24V)	Power
2	- Battery	Ground
3	Medium Pressure Sol 2	PWM Driver
4	Brake Light (Right)	Power Output
12	PWM Return 17-20	ECM Ground
13	PWM Return 13-16	ECM Ground
15	Quick Coupler Sol	PWM Driver
16	Brake Light (Left)	Power Output
17	Travel Motor Bypass Sol	PWM Driver
22	- Battery	ECM Ground
23	+ Battery	Power
24	Hydraulic Demand Fan Sol	PWM Driver
25	Hyd Modulation Sol	PWM Driver
30	Medium Pressure Sw 3	Switch To + Battery
31	Medium Pressure Sw 1	Switch To + Battery
33	Implement Lockout Relay	Sinking Driver
36	ON/OFF Drive Return	ECM Ground
37	- Battery	Ground
38	Medium Pressure Sw 2	Switch To + Battery
39	Key Start Input	Key Start Switch
40	Auxiliary Valve Pressure Sol	Proportional Driver
41	Auxiliary Valve Flow Sol	Proportional Driver
44	Travel Alarm Horn	On/Off Driver
45	Implement Lockout Sol	On/Off Driver
46	- Battery	Ground
47	+ Battery	Power
48	Main Pump Sol	Proportional Driver
49	PWM Return 5-8 (ECM Gnd)	ECM Ground
50	Travel Pilot Pressure Sol	Proportional Driver
51	Swing Brake Sol	Proportional Driver
52	PWM Return 1 - 4 (ECM Gnd)	ECM Ground
55	Generator Valve Sol	On/Off Driver
56	- Battery	ECM Ground
57	+ Battery	Power
58	Swing Pump Power Shift Press Sol	PWM Driver
59	PWM Return 5 - 12 (ECM Gnd)	ECM Ground
60	Travel Lock Magnet	Proportional Driver
61	Trans Gear Shift Sol 2	Proportional Driver
62	Trans Gear Shift Sol 1	Proportional Driver
63	Aux Directional or Hammer Sol	Proportional Driver
64	Travel Motor Swash Plate Angle Limit Sw	Proportional Driver
65	Oscillating Axle Sol	Proportional Driver
68	Starter Relay and Limp Home Sw	On/Off Driver
69	- Battery	Ground
70	+ Battery	Power