Code P1561, Cruise Vent Solenoid: Notes

Cruise switch within turn signal lever receives ignition voltage from a 15-amp fuse to turn signal lever cruise switches. Cruise ON/OFF, SET/COAST and RESUME/ACCEL switches are inputs to cruise portion of control module.

Cruise servo vent and vacuum solenoids output are controlled by high side drivers in control module. When ignition is on, control module looks at these output lines and will set codes if an incorrect status is seen on any line.

Vent solenoid is a normally open (de-energized) solenoid valve that allows vacuum in cruise servo to be depleted. When solenoid is on (energized), cruise servo holds vacuum allowing servo to remain retracted and hold throttle open.

When Code P1561 is set, control module will not allow cruise control operation. P1561 does not illuminate Malfunction Indicator Light (MIL).