Cummins ISM CM870 (2003-06) Fault Code: 286 PID: S231 SPN: 639 FMI: 13/13 The ECM expected information from a multiplexed device but only received a portion of the necessary information.

This fault can occur when the ECM is set up properly (components enabled and OEM VECU source addressed correctly) to receive information from an OEM VECU, but the OEM VECU is actually transmitting a message that says that component is not available for multiplexing.

Possible repairs:

1)Check OEM multiplex settings.

Cummins ISM CM870 (2003-06) Fault Code: 285 PID: S231 SPN: 639 FMI: 9/9 The ECM expected information from a multiplexed device but did not receive it soon enough or did not receive it at all.

Cummins ISM CM870 (2003-06) Fault Code: 284 PID: S221 SPN: 1043 FMI: 4/4 Engine Speed Sensor Supply Voltage Circuit - shorted low. Incorrect voltage detected on the ECM voltage supply line to the engine speed sensor.

Cummins ISM CM870 (2003-06) Fault Code: 265 PID: P174 SPN: 174 FMI: 4/4 Engine Fuel Temperature Sensor Circuit - Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at engine fuel temperature circuit.

Cummins ISM CM870 (2003-06) Fault Code: 263 PID: P174 SPN: 174 FMI: 3/3 Engine Fuel Temperature Sensor Circuit - Voltage Above Normal or Shorted to High Source. High signal voltage detected at engine fuel temperature circuit.

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