Need to replace HUB due to bad speed sensor
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Instructor
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Need to replace HUB due to bad speed sensor
I'm getting a code C 1234 and I am pretty sure it's a bad speed sensor. I was looking at the SKF hubs but I didn't know if they came with bearings or not. Is there a hub only replacement option?
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Instructor
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The hub is on the car. I guess I could put it in gear with it up on stands and try reading it then.
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From: Dear Karma, I have a list of people you missed.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
You may try this first: Disconnect the wheel speed sensor wire harness and check for damaged/dirty/contaminated/deformed pins at both ends. You wouldn't be the first guy to experience this code from something as simple as a problem with the wheel speed sensor harness connector pins. Spray some contact cleaner in each of the two connector plugs, re-plug and see if the code returns. The wheel harness is only approx 15" -18" long.
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Ok, I tested it. By putting a voltage meter with one pin to the sensor and the other to ground I saw 0v on the left rear and 1v on the right rear with the wheels stopped. I then put the car in drive and the left rear read .4v and the right read 1.4v. Does this confirm it is not working?
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When I did it that was I only saw a little bit of voltage when the wheel started spinning and when it stopped. I tried both sides with the same result. This was with the car in gear and the wheels spinning at 10mph.
Instructor
Joined: Mar 2003
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From: Baltimore MD
I got a similar code every time I backed up. I swapped the left and right wire harness, and the code followed the harness. I then sprayed the harness connectors with electrical contact cleaner, which fixed it. A mechanic said there are far more faulty wire harness / connector issues than faulty hubs.
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Thread Starter
Instructor
Joined: Nov 2011
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I hooked the digital meter up to it on AC this time and got .1 to .4 volts depending on speed. Both sides measured the same. I will spray the contacts and see if that helps. This shouldn't be a EBCM issue right?
Tech Contributor
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From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Your problem is more than likely BAD FEMALE PINS!!!!!DELPHI/DELCO female pins in out C5s SUCK
They get spread and make very poor or NO contact with the male pin in the connectors. You can use a metal pick and bend the little tang in the female pin back up to make proper contact with the male pin. Same problem with the DOOR HARNESS Connectors.
The proper way to test the female pins is to use a male pin and do a PIN PULL TEST. If it has grip / resistance pushing in and pulling the male pin out, its good.
Here is an example of a bad female pin in a front WSS jumper harness: Compare it to the new connector!
New on the LEFT,,, BAD on the right:
Thread Starter
Instructor
Joined: Nov 2011
Posts: 122
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Your problem is more than likely BAD FEMALE PINS!!!!!DELPHI/DELCO female pins in out C5s SUCK
They get spread and make very poor or NO contact with the male pin in the connectors. You can use a metal pick and bend the little tang in the female pin back up to make proper contact with the male pin. Same problem with the DOOR HARNESS Connectors.
The proper way to test the female pins is to use a male pin and do a PIN PULL TEST. If it has grip / resistance pushing in and pulling the male pin out, its good.
Here is an example of a bad female pin in a front WSS jumper harness: Compare it to the new connector!
New on the LEFT,,, BAD on the right: