BRACKET AS 3572251 - Caterpillar

Introduction
The problem that is identified below does not have a known permanent solution. Until a permanent solution is known, use the solution that is identified below.Problem
The 345-3381 Engine Electronic Control Gp , 345-3385 Engine Electronic Control Gp , 345-3388 Engine Electronic Control Gp , 340-8157 Engine Electronic Control Gp , and 357-2083 Engine Electronic Control Gp may present the following active fault codes:J1939
3509-3 Sensor Supply Voltage 1 Voltage above Normal
678-3 8V DC Supply Voltage above NormalCDL
262-3 Sensor Supply Voltage 1 Voltage above Normal
41-3 8V DC Supply Voltage above NormalOther fault codes may appear depending upon the engine and machine configuration. Refer to the relevant Troubleshooting for more information. These codes may be caused by an issue with an internal component within the Electronic Control Module (ECM).Solution
Illustration 1 g03239936
Typical exampleIf these codes are present, connect the electronic service tool. Read the engine ECM serial number (1) .If the engine ECM serial number begins with four digits in the range of 1382 to 1792, then replace the ECM. Refer to Disassembly and Assembly, "Electronic Control Module - Remove and Install" for the correct procedure.