Someone with service manual please help.
Thread Starter
Melting Slicks
Joined: May 2001
Posts: 2,812
Likes: 4
From: Gig Harbor Wa
Re: Someone with service manual please help. (BlackZ06)
Thanks Steve.
Is there any other info in the book about them? frequency? single or multiple pole magnetic pickup? # of pulses per revolution? Anything else would be helpful.
Is there any other info in the book about them? frequency? single or multiple pole magnetic pickup? # of pulses per revolution? Anything else would be helpful.
Safety Car
Joined: Aug 2000
Posts: 4,933
Likes: 30
From: San Rafael CA
Re: Someone with service manual please help. (70 LS1)
Unfortunately the manual doesn't give a lot of detail ...
"As the wheel spins, the wheel speed sensor produces an AC signal. The EBCM uses the frequency of the AC signal to calculate the wheel speed."
I guess they figure this is all Mr. Goodwrench needs to know, either the EBCM is getting a valid signal, or not. If not, either the wiring or the sensor is faulty.
Only info shown is that in testing for a bad sensor, a sensor is tested in two ways:
1) Wheel stationary - measure resistance ( Allowed value range listed is 850 - 1350 ohms)
2) Wheel rotating - AC voltage should be 100 mV
If the sensor doesn't pass those two tests, then the fix is to replace it. If the testing shows a valid signal at the pin outs for the EBCM, then the fix is to replace the EBCM. Makes it simple for the mechanic, but not much help for someone trying to reverse engineer what the EBCM and sensors are up to.
Good luck,
Steve :cheers:
"As the wheel spins, the wheel speed sensor produces an AC signal. The EBCM uses the frequency of the AC signal to calculate the wheel speed."
I guess they figure this is all Mr. Goodwrench needs to know, either the EBCM is getting a valid signal, or not. If not, either the wiring or the sensor is faulty.
Only info shown is that in testing for a bad sensor, a sensor is tested in two ways:
1) Wheel stationary - measure resistance ( Allowed value range listed is 850 - 1350 ohms)
2) Wheel rotating - AC voltage should be 100 mV
If the sensor doesn't pass those two tests, then the fix is to replace it. If the testing shows a valid signal at the pin outs for the EBCM, then the fix is to replace the EBCM. Makes it simple for the mechanic, but not much help for someone trying to reverse engineer what the EBCM and sensors are up to.
Good luck,
Steve :cheers:
