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WIRE A. 0003474 - Caterpillar

0003474 WIRE A. Caterpillar parts WIRE
Alternative (cross code) number:
Caterpillar 0003474 WIRE A.

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Diagnostic Indicator
Illustration 1 g00842166
The diagnostic indicator is used to get basic fault information from the control module. The various modes of displaying diagnostics are controlled by the termination of the harness code connector. The harness code connector is an eight pin connector. The female end of the DT connector accepts the termination plug. During normal operation, this plug is installed in the connector. When the key start switch is first turned to the ON position, the system will perform a self test and the indicator will illuminate briefly. If the indicator does NOT illuminate, check the lamp and the polarity of the wiring to the lamp. If a system problem is detected by the ECM, the diagnostic indicator will turn on. The indicator will remain on if the problem is active.When the termination plug is removed from the connector, the ECM will display the first problem. The problem is displayed by flashing the diagnostic indicator. A valid diagnostic code will consist of a series of flashes for the first digit. A short pause immediately follows the first series of flashes. Then, a second series of flashes will represent the second digit. Then, a third series of flashes will represent the third digit. If no diagnostic codes are present or logged, the ECM will broadcast code 222. See Troubleshooting, "Using the Diagnostic Indicator to Determine Diagnostic Codes".The Caterpillar Electronic Technician (ET)
Illustration 2 g00777826
The Caterpillar Electronic Technician (ET) is a software program that is used to access data. The service technician can use the Caterpillar Electronic Technician in order to perform maintenance work on the machine. Some of the options that are available with the Caterpillar Electronic Technician are listed below:
Diagnosis of problems
Viewing diagnostic codes
Viewing active event codes and logged event codes
View the status of parameters.
Clear active diagnostic codes and clear logged diagnostic codes
Perform calibration of machine systems. See Testing and Adjusting, "Calibrations".
Program the ECM (Flash). This is done with the "WINflash" program. See Testing and Adjusting, "Electronic Control Module (ECM) - Flash Program".
Print reports.See Troubleshooting, "Using the Caterpillar Electronic Technician to Determine Diagnostic Codes". Diagnostic information is accessed with the following drop down menus:
Active diagnostic codes
Logged diagnostic codesEvent Codes
Active Event Codes
Illustration 3 g00788686
An active event indicator is provided in order to monitor events that are currently flagged as a system problem. The information that is provided for an active event is an event identifier (EID) and a text description of the problem.Logged Event Codes
Illustration 4 g00789603
A logged event indicator is provided in order to monitor events that are intermittent or recurring. The data for the logged event will include the following information:
An event identifier (EID)
A text description of the problem
The number of occurrences of the problem
Time stamped information for the first occurrence of the problem
Time stamped information for the last occurrence of the problem
Table 1
Event Codes     Description    
188     Service brake pedal not actuating parking brake    
190     Engine overspeed condition    
395     Transmission stall condition    

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