Question about 2003 Toyota Avalon
The car can move but fails to gain the speed it used to have. Once the laving counter reaches 2 the car's acceleration drops
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Posted on Jan 02, 2017
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Symptoms of faulty crank position sensor
How to check? If the CKP has died completely there will be very high resistance
between the device's electrical connections associated with the open
circuit. Furthermore spark delivery to
the plugs will be absent. First check that the electrical connection is clean
and secure; dirt or corrosion can impair an otherwise healthy CKP signal from
getting through. If the CKP suffers from
a drop in voltage associated with heat increase this can only be detectable
with a voltmeter or oscilloscope with a graphical display; an analogue display
voltmeter might just be able to show needle fluctuations due to voltage
2 pin socket (magnetic - sine wave
output). One pin is 'ground' the other
is 'signal'. A voltmeter set to 2 volts
AC should measure a signal in the 0.2 to 2 volts range on the 'signal' pin.
pin socket (Hall effect, magneto - square wave form output). One pin is 'reference' (5volts), one pin is
'ground' and the third pin is 'signal'.
A DC voltage should be detectable in the 0.5 to 1.5 volt range from the
It is important that the voltage measurement take place at start up when the engine is cold and again, 20 minutes later, when the engine has fully warmed up to operating temperature. Often the voltage output from faulty sensors declines with temperature rise.
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