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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)
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     |
( 1 ) | The connector contacts that are not listed are not used. The connector has 70 contacts. |
____________________
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     |
( 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)
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     |
( 1 ) | The connector contacts that are not listed are not used. The connector has 70 contacts. |
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     |
( 1 ) | The connector contacts that are not listed are not used. The connector has 70 contacts. |