Left rear ECU Pin # 7 and 9
Right front ECU Pin # 11 and 21
Right rear ECU Pin # 24 and 26
What type of speed sensor is this ? Permanent magnet coil type sensor.
Describe how it works?
A toothed ring on the wheel when rotates a magnetic pick up has magnetic which has reluctance as the magnet is near or far from, in the teeth of ring iron makes the magnetic field stronger and weaker.
Located an oscilloscope. Turn it on and set it up to be fully operational. What oscilloscope are you using?
Tektronix TDS 100 IB two Chanel oscilloscope.
Record a waveform for each wheel speed sensor in the boxes below. Note voltage per division and per division for each.
Which wheels is this? Left front
Which wheel is this? Left rear.
Which wheel is this? Rear right.
Which wheel is this? Rear left.
Are all the waveforms exactly the same? NO The rear right wheel waveform is different, we seat the the oscilloscope 2.0 v and 250 us for one devision. The wave form of rear right wheel low spike voltage the cause is the sensor will be far from the tooth wheel , dirty sensor or may be when i toke the picture the speed of wheel is low.
With the wheel speed sensors sniping, measure AC volts with multi - meter and record here:
Left front 3.66 pin# B19
Left rear 2.61 V Pin # B21
Right front 4.41 V Pin # B 20
Rear right 4.91 V Pin # B22
Can a multi-meter be as accurate in finding problems wthe the wheels speed sensors as an oscilloscope? YES
No comments:
Post a Comment