Aus dem Bentley Buch, M50 und M60 Motoren
The throttle position sensor is mounted on the side of the throttle housing and is directly connected to the throttle valve shaft.
The ECM sends a voltage signal to the potentiometer-type sensor and monitors the voltage that comes back.
Resistance decreases (voltage increases) as the throttle opens.
Check throttle position sensor by disconnecting the harness connector and checking continuity across the terminals while changing the throttle position. Test values are listed below.
If the results are incorrect, replace the throttle position sensor.
The sensor is not adjustable.
Test conditions..............Terminals............Test value
harness connector disconnected, ignition ON.
Terminals 1 and ground in harness connector.
Approx. 5 VDC
harness connector disconnected, ignition OFF.
Terminals 1 and 3 at sensor terminals.
Approx. 4.0 k ohms.
Throttle plate rotated from idle to full throttle.
Terminals 1 and 2 at sensor terminals.
Continiously variable from approx. 1.0 - 4.0 k ohms, without interruption.
|