CAT 3126B Fault Code: 231-12 PID: Flash Code 00 SPN: FMI: J1939 Device Not Responding
The Engine Control Module (ECM) detects the following conditions:
•The ECM is unsuccessful in receiving a message from a J1939 source.
•The ECM is not receiving a valid message from a J1939 source
The power train data link is designed to offer electronically controlled Anti-Lock Brakes (ABS), traction control systems, and/or transmission controls. This is accomplished by a momentary reduction of engine rpm and/or engine torque, that is triggered by a signal from an off-engine control module for the ABS, the traction control, or the transmission. An off-engine control module is a control module that is not part of theCaterpillar engine control system.
Possible Causes:
1) ECM Connection/Harness
2) Other devices on the J1939 (ABS, Body Controller, Transmission, etc…) are failing causing the issue
3) Improper programming in ECM
4) ECM Failure
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