Idle Speed Motor Position Sensor: Testing and Inspection

CIRCUIT DIAGRAM





USING SCAN TOOL











HARNESS INSPECTION PROCEDURES

SENSOR INSPECTION
1. Disconnect the idle speed control motor position sensor connector.





2. Measure the resistance between terminals (2) and (3).

Standard value: 4 - 6 K Ohms

3. Disconnect the idle speed control motor connector.





4. Connect DC 6 Volts between terminals (1) and (2) of the idle speed control motor connector, and then measure the resistance between terminals (3) and (5) of the idle speed control motor position sensor connector when the idle speed control motor is activated (caused to expand and contract).

Standard value: Smooth increase/decrease in accordance with expansion and contraction of the idle speed control motor plunger.

Caution: Apply only a 6 Volts DC or lower Voltage. Application of higher Voltage could cause locking of the servo gears.

5. If there is a deviation from the standard value, or if the change is not smooth, replace the idle speed control motor assembly.

TROUBLESHOOTING HINTS
The idle speed may be erratic if the idle speed motor is faulty.