P1584

Wiring Diagram:

DTC P1584 will set if the PCM disengages the cruise. Normal driver induced commands such as brake On/Off, cruise switch On/Off, etc., will not set this DTC. However, it is possible for a driver to induce this DTC with abnormal driving maneuvers. An example would be shifting from D4 to neutral while the cruise is engaged.

DTC PARAMETERS
The PCM will disengage cruise and set DTC P1584 if any of the following conditions are met:
^ Ignition 1 voltage is less than 10V or greater than 16V DC.
^ Vehicle acceleration is greater than 16 km/h/second (10 mph per second) or traction active.
^ Decel is greater than 6.5 km/h/second (4 mph per second).
^ Speed error (difference between set speed and actual vehicle speed) is greater than 24 km/h (15 mph) for 10 seconds or greater than 32 km/h (20 mph) instantaneously. May be caused if on steep hills.
^ Engine speed out of range rpm if less than 950 or greater than fuel cutoff rpm while in cruise.
^ Gear out of range (invalid gear ratio selection for cruise).
^ Park/neutral position switch possible failure (automatic transaxle only).

TESTING
Use of the MALF history records in Scan tool parameter will help diagnose driver induced versus system failures. Inspect the "Disable" bits at the bottom of the Malf table (e.g., Disable PRNDL Fail, Disable Volt Out of Range, etc.). Did the failed parameter pass since failure? Has it failed since DTC clear, this ignition cycle?

IMPORTANT: If DTC P1640 or P1641 are present, diagnose these first.