Cummins ISB CM850 (2003-06) Fault Code: 784 PID: SPN: 1590 FMI: 2 Loss of communication with adaptive cruise control. The ECM triggers this fault when the ?heartbeat? signal from the data bus is not received.
Possible causes:
1)The adaptive cruise hardware is not installed on the vehicle and the adaptive cruise feature has been enabled.
2)The broadcast signal from the adaptive cruise is not being received. Refer to the OEM troubleshooting and repair manual and the Adaptive Cruise Hardware Manual.
Possible repairs:
1)Clean the connector and pins.
2)Repair the damaged harness, connector or pins, if possible.
Cummins ISB CM850 (2003-06) Fault Code: 779 PID: SID 51 SPN: 703 FMI: 11 Auxiliary Equipment Sensor Input #3 (OEM Switch) – Root Cause Not Known.
Cummins ISB CM850 (2003-06) Fault Code: 778 PID: SID 64 SPN: 723 FMI: 2 Engine Speed Sensor (Camshaft) Error – Data Erratic, Intermittent, or Incorrect. The ECM has detected an error in the camshaft position sensor signal.
Cummins ISB CM850 (2003-06) Fault Code: 757 PID: SPN: 611 FMI: 11 Engine Control Module Data Lost – Condition Exits. Severe loss of data from the ECM.
Cummins ISB CM850 (2003-06) Fault Code: 731 (Marine) PID: SID 64 SPN: 723 FMI: 7 Engine Speed Sensor/Position Camshaft and Crankshaft Misalignment – Mechanical System Not Responding Properly or Out of Adjustment. Mechanical misalignment between the crankshaft and camshaft engine speed sensors.
Cummins ISB CM850 (2003-06) Fault Code: 731 (Auto) PID: SID 64 SPN: 732 FMI: 7 Engine Speed Sensor/Position Camshaft and Crankshaft Misalignment – Mechanical System Not Responding Properly or Out of Adjustment. Mechanical misalignment between the crankshaft and camshaft engine speed sensors.
Cummins ISB CM850 (2003-06) Fault Code: 692 PID: SPN: 1172 FMI: 4 Turbocharger Number 1 Compressor Inlet Temperature Sensor Circuit – Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at the turbocharger compressor inlet air temperature sensor circuit.
