Cruise Control Based Diagnosis

Fig. 10 Code P1580: Cruise Move Circuit Voltage Low.:

CRUISE MOVE CIRCUIT (VOLTAGE LOW)
The PCM provides approximately 12V (ignition voltage) to control movement of the cruise module motor. The feedback signal internal to the PCM monitors circuit 1886 and compares low vs high as the driver is turned On and Off. If voltage levels are too low when the driver is turned On, DTC P1580 will set.

DTC PARAMETERS

DTC P1580 will set if:

^ Circuit 1886 is less than 7.0 volts when driver is turned On.

IMPORTANT
The cruise move circuit is tested continuously anytime ignition is On

DIAGNOSTIC AIDS

^ If an intermittent condition exists, inspect parameters on Scan tool while moving connectors and harnesses.

^ Inspect MALF history data to understand when the condition existed and attempt to reproduce.