Tracker 4WD V6-2.5L VIN 4 (2001)
engaged, the idle-up circuit may be inoperative or always ON.
10. This step checks the electrical circuits between the IAC valve and the PCM.
11. This step determines whether the PCM is attempting to control the IAC valve. Each IAC coil control circuit should indicate a high voltage of 12
volts or more, and then a low voltage of 0.0-1.0 volts as the PCM commands changes in the engine speed. Remember to clear any DTCs and run
the engine until the engine reaches a normal operating temperature before attempting RPM Control with the scan tool.
