SAE J1939 Data Link Multiplexing Remote Accelerator
|Fault Code: 288
SAE J1939 Multiplexing Remote Throttle Data Error. The OEM vehicle electronic control unit (VECU) detected a fault with the remote accelerator.
The engine will not respond to the remote accelerator.
SAE J1939 Data Link Multiplexing Circuit
Inputs, such as accelerator pedals, switches, and sensors can be communicated to the ECM over the SAE J1939 data link. Messages sent from the vehicle electronic control units are received by the ECM and used for controlling the engine. Both the ECM and vehicle electronic control units must be properly configured so that each device’s information is transmitted by the vehicle electronic control unit and received by the ECM.
The ECM is bolted to the intake side of the engine between the air horn and the front of the engine. Refer to Section E for a detailed component location view.
If the OEM vehicle electronic control unit detects an error with the remote accelerator, it transmits an error message to the ECM. This fault code is set active when the ECM receives a remote accelerator error message from the vehicle electronic control unit over the SAE J1939 data link.