| |
| Illustration 1 | g00554751 |
|
Electronic Control Module (ECM) | |
| |
| Illustration 2 | g00556522 |
The Power Train ECM makes decisions based on the information from inputs and information from memory. After the ECM receives the information from inputs and information from memory, the ECM will send a corresponding response through the outputs. The inputs and outputs of the ECM connect to the machine harness by two 70-pin connectors (J1 and J2).
The machine has several input devices. The 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 ECM are listed in the two tables for the 70-pin connector.
The ECM sends electrical signals through the outputs. The outputs can create an action or the outputs can provide information to the ECM. The outputs for the ECM are listed in the two tables for the 70-pin connector.
The Engine ECM and the Power Train ECM use the Cat Data Link in order to communicate with each other. The data link is bidirectional. The data link allows the sharing of information with other electronic control modules.
The Power Train ECM and the instrument panel use the CAN data link to communicate with each other. The data link is bidirectional. Engine information that needs to be displayed on the instrument panel is transmitted to the Power Train ECM on the Cat Data Link. Then, the Powetrain ECM sends the information to the instrument panel on the CAN Data Link.
For more information on the data links, see Systems Operation, KENR5815, "Data Link".
A module identifier (MID) is assigned to each ECM. The MID for the Power Train ECM is the number 081.
| Contact Description for the Power Train ECM J1 | |
|---|---|
| No.(1) | Function |
| 1 | Keyswitch On |
| 2 | Transmission Output Speed Sensor (A) + |
| 3 | Transmission Output Speed Sensor (A) - |
| 4 | Transmission Output Speed Sensor (B) + |
| 5 | Transmission Output Speed Sensor (B) - |
| 8 | Engine Speed Tach Wire + |
| 9 | Engine Speed Tach Wire - |
| 10 | CAT Data Link + |
| 12 | Backup Alarm |
| 13 | - Unswitched Battery |
| 14 | HVAC Blower Speed Sw ON |
| 15 | Torque Converter Output Speed Sensor + |
| 16 | Torque Converter Output Speed Sensor - |
| 18 | Second Converter Output Speed |
| 20 | Cat Data Link - |
| 22 | Autolube Grease Level Switch (N/C) |
| 23 | - Unswitched Battery |
| 26 | ID Code 2 (Open) |
| 27 | ID Code 1 (Ground) |
| 28 | ID Code 3 (Open) |
| 31 | + Unswitched Battery |
| 32 | ID Code 4 (Ground) |
| 33 | Steering/XMSN Lock Sw (N/C) |
| 34 | Steering/XMSN Lock Sw (N/O) |
| 35 | Lockup Clutch Enable Sw |
| 38 | + Unswitched Battery |
| 39 | + Unswitched Battery |
| 40 | Upshift Sw (N/C) |
| 41 | Upshift Sw (N/O) |
| 42 | Downshift Sw (N/C) |
| 43 | Downshift Sw (N/O) |
| 44 | 8V Sensor Power Supply |
| 45 | 8V Sensor Return |
| 46 | + Unswitched Battery |
| 47 | + Unswitched Battery |
| 49 | Clutch 4 Solenoid (second speed) |
| 50 | PWM Return (1-4) |
| 51 | Clutch 5 Solenoid (first speed) |
| 52 | Autolube Solenoid |
| 54 | PWM Return (11-12) |
| 55 | PWM Return (9-12) |
| 56 | 10V Sensor Return |
| 57 | + Unswitched Battery |
| 58 | Lockup Clutch Solenoid |
| 59 | Impeller Clutch Solenoid |
| 60 | PWM Return (5-8) |
| 62 | Clutch 2 Solenoid (forward) |
| 63 | Quickshift Sw (N/C) |
| 64 | Quickshift Sw (N/O) |
| 65 | Clutch 1 Solenoid (reverse) |
| 66 | Clutch 3 Solenoid (third speed) |
| 69 | 10V Supply |
| 70 | - Unswitched Battery |
| (1) | The connector contacts that are not listed are not used. The connector has 70 contacts. |
| Contact Description for the Power Train ECM J2 | |
|---|---|
| No.(1) | Function |
| 1 | Key Start Switch |
| 2 | XMSN Oil Level Add LED |
| 3 | Autolube Lo Level LED |
| 4 | On/Off Driver Return 1 |
| 5 | Ride Control Solenoid |
| 7 | Start Relay |
| 8 | Load Return 2 |
| 9 | Lower Relay |
| 10 | Heated Mirror Relay |
| 11 | Autolube Indicator LED |
| 13 | Bumper Transmission Lockout LED |
| 14 | Alternator R Terminal |
| 15 | Autolube Pressure Sensor |
| 16 | Autolube Neef Pressure Sensor |
| 17 | Impeller Clutch Pressure Sensor |
| 19 | HVAC Condenser/PEM Blower Relays |
| 22 | Digital Return |
| 23 | Direction Sw (Neutral) |
| 24 | Transmission Sump Temperature Sensor |
| 25 | Refrigerant System Status |
| 26 | Transmission Pump Pressure Sensor P1 |
| 28 | Direction Sw (Reverse) |
| 29 | Heated Mirror Sw |
| 31 | N/O RS Position Sw (SWG) |
| 35 | Torque Converter Pedal Position Sensor |
| 36 | Reduced Rimpull Select Sw Lo |
| 37 | Reduced Rimpull Select Sw Med |
| 38 | Reduced Rimpull Select Sw Hi |
| 39 | Reduced Rimpull Select Sw Max |
| 40 | Center Pump Shutoff Sw (N/O) |
| 41 | Center Pump Shutoff Sw (N/C) |
| 42 | Right Pump Shutoff Sw (N/O) |
| 43 | Right Pump Shutoff Sw (N/C) |
| 44 | Bumper Transmission Lockout Sw (N/C) |
| 45 | Ride Control Sw (ON) |
| 46 | Ride Control Sw (AUTO) |
| 47 | Bumper Transmission Lockout Sw (N/O) |
| 49 | Direction Sw (Forward) |
| 52 | Parking Brake Pressure Sw (N/C) |
| 53 | Parking Brake Pressure Sw (N/O) |
| 54 | Parking Brake Cab Sw (N/C) |
| 55 | Parking Brake Cab Sw (N/O) |
| 58 | Transmission Oil Level Sw (Engine Run) |
| 59 | N/C RS Position Sw (SWG) |
| 62 | Manual Lube Sw |
| 64 | Can Data Link + |
| 65 | Can Data Link - |
| 67 | J1939 High |
| 68 | J1939 Low |
| 69 | J1939 Shield |
| (1) | The connector contacts that are not listed are not used. The connector has 70 contacts. |