TIP-PEN PLUS 3683763 - Caterpillar

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Typical left side view
(12) Fuel pressure sensor. (13) Control panel connectors, P94 and J107.
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ECM
(14) ECM connector J2/P2. (15) ECM connector J1/P1
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Detail A
(16) Customer connector. (17) Cat/ATA data link connector (C60).
Data Link
A data link is used for the following items:
Communicate engine information.
Communicate with Caterpillar Electronic Service Tools.
Calibrate the electronic engine control system.
Troubleshoot the electronic engine control system.
Program the electronic engine control system.The data link is used to communicate engine information to other electronic control systems. Also, the data link can interface with Caterpillar Electronic Service Tools.The data link monitors engine information. The engine information that is available on the data link includes the following information:
boost pressure
engine identification
engine speed
oil pressure
rack position
status and diagnostic information
throttle positionCaterpillar Electronic Technician (Cat ET) can be used to program the customer specified parameters. The tool is plugged into the data link connector. This allows Cat ET to communicate with the ECM. Also, Cat ET can be used to display the real time values of all the information that is available on the data link. This will help diagnose engine problems.Electrical Connectors And Functions
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Table 1
Electrical Connectors
Jack/Plug Component
J1/P1 ECM connector
J2/P2 ECM connector
J3/P3 Customer connector
J20/P20 Primary Engine Speed/Timing Sensor
J21/P21 Coolant Temperature Sensor
J22/P22 Engine Oil Pressure Sensor
J23/P23 Turbocharger Outlet Pressure Sensor
J26/P26 Timing Calibration Probe connector
J27/P27 Atmospheric Pressure Sensor
J34/P34 Coolant Level Sensor
J35/P35 Throttle Position Sensor
J43/P43 Fuel Temperature Sensor
J44/P44 Secondary Engine Speed/Timing Sensor
J45/P45 Injection Actuation Pressure Sensor
J46/P46 Injection Actuation Pressure Control Valve
J49/P49 Fuel Pressure Sensor
J51/P51 Engine Oil Temperature Sensor
J52/P52
to
J58/P58 HEUI injectors
J60 Service Tool connector
J61/P61 Secondary Throttle Position Sensor
J89/P89 Inlet Air Temperature Sensor
J95/P95 Transmission Gear Temperature
J96/P96 Transmission Gear Pressure
J154/P154 Termination Resistor Electronic Control Module (ECM)
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Electronic Control Module (ECM)
The engine uses an electronic control module (ECM). The ECM is a microprocessor based device. The ECM is mounted on the rear of the engine.The inputs and the outputs to the ECM are designed to withstand short circuits without damage to the control module. The electronic engine control system has the following features that are designed into the system.
Resistance to radio frequency
Resistance to electromagnetic interferenceThe system has passed tests for interference by two-way radios and by switching noise.The ECM power supply provides electrical power to all engine mounted sensors and actuators. The following precautions have been designed into the ECM.
Reverse voltage polarity protection
Vessel power system voltage swings or surges due to sudden alternator loadThe ECM also monitors all sensor inputs and the ECM provides the correct outputs in addition to acting as a power supply. Also, the ECM ensures the desired engine operation.The ECM is programmed with a selected factory engine rating. The ECM memory contains a personality module identification code. This code is used to avoid unauthorized tampering or switching of personality modules and other pertinent manufacturing information.The wiring harness provides communications to the following areas:
ECM
various sensors
data link connector
engine connectorsThe ECM is programmed to perform the following functions:
diagnostic tests on all inputs
diagnostic tests on all outputs
identify a faulty circuit.Once a fault is detected, the fault can be displayed on a diagnostic lamp. The diagnostic code can be read by