Component Inspection

Engine

Engine Control - P0123 Throttle Position Sensor 1 Signal Circuit High Input - Component Inspection

Component Inspection

1. Ignition "OFF"
2. Disconnect TPS connector
3. Measure resistance between terminals 2 and 3 of the TPS connector (Component side)

Specification : Approx. 1.6 - 2.4 kOhms at all throttle position




4. With still TPS connector disconnected, measure resistance between terminals 1 and 2 of the sensor connector (Component side)
5. Operate the throttle valve slowly from the idle position to the full open position and check the resistance changes smoothly in proportion with the throttle valve opening angle.

Specification : 0.71 - 1.38 kOhms at closed throttle valve, 2.7 kOhms at wide open throttle




6. Is resistance within the specification?