P1517 FORD, LINCOLN, MAZDA, MERCURY: INTAKE MANIFOLD RUNNER CONTROL INPUT ERROR BANK 2
POST UPDATED IN June, 2023
P1517 FORD, LINCOLN, MAZDA, MERCURY: INTAKE MANIFOLD RUNNER CONTROL INPUT ERROR BANK 2
The IMRC (Intake Manifold Runner Control) is an electrically operated system, which consists of a motorized actuator with one attachment link for each housing on each bank. The linkage is connected to the housing butterfly plate levers.
Each IMRC housing is an aluminum casting with two inlet air passages for each cylinder. One passage is always open, and the other one is operated by the butterfly valve lever, which opens and closes it. The housing has a return spring which keeps the plates closed.
The motorized actuator houses internal switches that provide feedback to the PCM (Powertrain Control Module), which indicates the position of the linkage and plates. Below 3000 rpm, the vacuum solenoid is activated to allow the vacuum to be applied to the manifold so that the throttle valve plates are shut down. Above 300 rpm the solenoid is de-energized, allowing vacuum to be vented from the actuator and the valve plates to open.
P1517 OBDII fault code is set when the Intake Manifold Runner Control input signal is outside a calibrated range.
The reasons for storing the P1517 OBD2 diagnostic code are:
The steps to follow to solve the DTC P1517 OBDII code are as follows: