5033541 JOHNSON WATER PUMP REPAIR KIT

Connecting the Caterpillar Electronic Technician (Cat ET) to the Electronic Control Module (ECM)
Table 1
Tools Needed Qty
Personal Computer (PC) 1
Single user license for Cat ET
Use the most recent version of this software.
"JERD2124" 1
Software
Data subscription for all engines
"JERD2129" 1
171-4400 Communication Adapter Gp (1) 1
275-5120 Communication Adapter Gp(2)
7X-1414 Adapter Cable As 1
237-7547 Adapter Cable As(3) 1
225-5985 Parallel Port Cable (COMMUNICATION ADAPTER) 1
(1) This item includes the 171-4401 Communication Adapter As.
(2) This item includes the 275-5121 Communication Adapter As. The 7X-1700 Communication Adapter Gp may also be used.
(3) This cable connects to the USB port on computers that are not equipped with a serial port.For more information regarding the use of Cat ET and the PC requirements for Cat ET, refer to the documentation that accompanies your Cat ET software.The engine's power supply provides the communication adapter with 24 VDC. Use the following procedure to connect Cat ET and the communication adapter to the engine.
Illustration 1 g01299558
Connecting Cat ET to the service tool connector
The service tool connector is on the left rear corner of the engine.
(1) Service tool connector
(2) Personal Computer (PC)
(3) 237-7547 Adapter Cable As
(4) 196-0055 Adapter Cable As
(5) 225-5985 Parallel Port Cable (COMMUNICATION ADAPTER)
(6) 171-4401 Communication Adapter As
(6) 275-5121 Communication Adapter As
(7) 207-6845 Adapter Cable AsRefer to Illustration 1. The location of the service tool connector depends on the configuration of the control system.The engine's power supply supplies the communication adapter with 24 VDC. Use the following procedure to connect Cat ET and the communication adapter to the engine.
Set the engine control to the OFF/RESET mode.
Connect communications adapter (6) to a communications port on the PC by using one of the following methods:
Connect cable (5) between the "COMPUTER" end of communications adapter (6) and the parallel port of PC (2). Be sure to configure Cat ET for the parallel port. This configuration provides the fastest connection.
Connect cable (4) between the "COMPUTER" end of communication adapter (6) and the serial port of PC (2).
Connect cables (3) and (4) between the "COMPUTER" end of communication adapter (6) and the USB port of PC (2).
Connect cable (7) to communication adapter (6).
Connect cable (7) to the service tool connector.
Verify that the "POWER" indicator on the communication adapter is illuminated.
Set the engine control to the STOP mode. Establish communication between Cat ET and an ECM. If Cat ET and the communication adapter do not communicate with the ECM, refer to Troubleshooting, "Electronic Service Tool Does Not Communicate".If Cat ET displays "Duplicate Type on data link. Unable to Service", check the harness code for the electronic control modules.The harness inside the terminal box has jumper wires (harness codes) for the slave ECM and the optional Auxiliary Sensing Module (ASM).The ECM that is connected to the harness reads the harness code. This provides the ECM with a unique identifier on the Cat Data Link.The jumper wires must be connected in order for the Cat ET to communicate with the modules. The jumper wires must be connected in order for the engine to crank. The jumper wires must remain connected in order for the engine to run.The jumper wire for the slave ECM connects terminals P3-60 and P3-29.The jumper wire for ASM connects terminals P5-60 and P5-68.Check the continuity between the terminals. Verify that the jumper wires are in good condition. Make repairs, as needed.Recommendations for Programming the System Configuration Parameters
For descriptions of the parameters, refer to Systems Operation, "Electronic Control System Parameters". The values of the parameters can be viewed on the "Configuration" screen of Cat ET.Programmable parameters enable the engine to be configured in order to meet the requirements of the application. The system configuration parameters must be programmed when the application is installed. Perform this programming before the initial engine start-up.Data from a gas analysis is required in order to determine the correct settings for the air/fuel ratio control. The data must be entered into Caterpillar Software, LERW4485, "Gas Engine Rating Pro (GERP)". Incorrect programming of parameters may lead to complaints about performance and/or to engine damage.If an ECM is replaced, the appropriate parameters must be copied from the original ECM. This can be done with the "Copy Configuration" feature of Cat ET. Alternatively, the settings can be recorded on paper and then programmed into the new module.
Changing the parameters during engine operation can cause the engine to operate erratically. This can cause engine damage.Only change the settings of the parameters when the engine is STOPPED.
Changing the Settings of the Monitoring System
For descriptions of the monitoring system parameters, refer to Systems Operation, "Engine Monitoring System".To change the settings of the parameters, use Cat ET and select the "Service/Monitoring System" screen.Use care when you program the trip points and the delay times. Ensure that the response of the ECM is correct for the application. The monitoring system will accept any settings within the ranges.Refer to Troubleshooting for the setpoints and for the password protection.
Changing the parameters during engine operation can cause the engine to operate erratically. This can cause engine damage.Only change the settings of the parameters when the engine is STOPPED.