EDGE-CUTTING 1957187 - Caterpillar

Table 2
Contact Description Of Propel ECM Connector
For Wheeled Pavers
Contact Numbers Not Used: 13, 29, 30 and 31
Type Function Active State No.
Power +V +V 1
Ground Ground Ground 2
Ground Switch/Sensor/Solenoid Return Ground 39
I/O(1) Cat Data Link - - 9
I/O Cat Data Link + - 8
Input Harness Code 1 Ground 21
Input Harness Code 2 Ground 22
Input Harness Code 3 Ground 23
Input Harness Code 4 Ground 24
Input Harness Code 5 Ground 25
Input Speed Dial Sensor PWM 3
Input Steering Angle Sensor PWM 4
Input Engine Speed Sensor Frequency 5
Input Left Wheel Speed Sensor Frequency 6
Input Right Wheel Speed Sensor Frequency 7
Input Travel Switch Ground 12
Input Raise RPM Switch(2) +V 14
Input Lower RPM(2) +V 15
Input Park Brake Switch ON Ground 16
Input Park Brake Switch OFF Ground 17
Input Display Service Switch +V 18
Input Display Clear/Store Switch +V 19
Input Motor Displacement Switch Ground 20
Input Traction Assist Switch Ground 26
Input Speed Lever Sensor PWM 27
Input Brake Pedal Sensor PWM 28
Output Left Forward Propel Solenoid Proportional 10
Output Left Reverse Propel Solenoid Proportional 11
Output High Gear Solenoid On/Off 32
Output Right Forward Propel Solenoid Proportional 33
Output Right Reverse Propel Solenoid Proportional 34
Output Parking Brake Solenoid On/Off 35
Output Backup Alarm On/Off 36
Output Implement Relay On/Off 37
Output Fault Lamp On/Off 38
Output +10 Volt Sensor Supply +10 Volts 40
(1) Input/Output
(2) Inputs not used on AGP and BYG machines.Inputs
The ECM monitors numerous inputs in order to determine the status of machine conditions. The two types of inputs are switch type and sensor type. Switches provide an open, grounded, or +V signal to the switch inputs of the ECM. Sensors provide a signal to the ECM that changes in a proportional manner in order to reflect changing machine conditions. The inputs are listed on the contact description tables. Outputs
The ECM responds to decisions by sending electrical signals through the various outputs. The outputs either create an action or provide information. The outputs are listed on the Contact Description tables. Input/Output
The Cat Data Link is bidirectional, allowing the ECM to receive and send information. The purpose of the Cat Data Link is to communicate with other ECMs on the machine and to communicate with service tools. The communication permits information to be shared. The Cat Data Link is not a visible component. The Cat Data Link consists of internal ECM circuits and the connecting harness wiring. For more information, see the topic Cat Data Link.