TUBE ASSEM. (Left Hand) 7K4134 - Caterpillar

Use this procedure to solve communication problems between Caterpillar Electronic Technician (ET) and the Electronic Control Module (ECM). Cat ET must communicate with the ECM in order to fully service the engine.There is a "POWER" indicator on the communication adapter that indicates that the communication adapter is receiving power. An indicator on the communication adapter indicates that communication is occurring on the data link. Cat ET displays a message if Cat ET can not communicate with the data link.The following conditions can cause a communication problem:
Cat ET
Communication adapter and/or cables
Configuration for the communications adapter
Electrical power supply to the service tool connector
Cat Data LinkThis procedure determines the root cause of failure to communicate on the data link.Test Step 1. Verify that the Newest Version of Cat ET is Being UsedCheck the version of Cat ET. Cat ET must be the newest version.Expected Result:Cat ET is the most current version.Results:
OK - Cat ET is the most current version. Attempt to establish communication. Continue with this procedure if the communication adapter