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SAE J1939 Data Link Multiplexing Accelerator Pedal Sensor
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Overview
| CODE | REASON | EFFECT |
| Fault Code: 287 PID: P091 SPN: 19 FMI: 19 LAMP: Red SRT: |
SAE J1939 Multiplexing Accelerator Pedal Sensor Error. The OEM vehicle electronic control unit (VECU) detected a fault with its accelerator pedal. |
The engine will only idle. |
 SAE J1939 Data Link Multiplexing Circuit
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Circuit Description
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.
Component Location
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.
Shop Talk
If the OEM vehicle electronic control unit detects an error with the accelerator pedal sensor, it transmits an error message to the ECM. This fault code is set active when the ECM receives an accelerator pedal sensor error message from the vehicle electronic control unit over the SAE J1939 data link.
Refer to Troubleshooting Fault Code t05-287
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