C1284 / C1285 Codes
Thread Starter
4th Gear
Joined: Nov 2020
Posts: 4
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C1284 / C1285 Codes
I am trying to run downC1284 and C1285 errors. My scantool does not let me see the live values of the lateral accelerometer voltage. What scan tool should I get on a budget? I have autotel al519 now. I assume it cannot be as easy as replacing the lateral sensor. Also recommendations for a good ebcm repair company.
Thank you in advance!
Thank you in advance!
Safety Car
Joined: Mar 2005
Posts: 3,741
Likes: 1,205
From: Wisconsin
https://www.absfixer.com/ gets a lot of mentions for ebcm repair on this forum. what year is your vette? older than 2001 your out of luck
Thread Starter
4th Gear
Joined: Nov 2020
Posts: 4
Likes: 0
https://www.absfixer.com/ gets a lot of mentions for ebcm repair on this forum. what year is your vette? older than 2001 your out of luck
Moderator, Tech Contributor
Joined: Sep 2013
Posts: 15,411
Likes: 3,964
From: Cape Coral, Florida
You may have a bad sensor, wiring, or EBCM. You can measure the voltages right at the sensor...it's 3 wires...5 volt ref., a low ref.(ground) and a signal wire. How much you looking to spend ??...you can get a Chinese clone Tech 2 for $300-$400 dollars...best thing is that it has bi directional capabilities !!
Thread Starter
4th Gear
Joined: Nov 2020
Posts: 4
Likes: 0
I measured at the connector and it read 4.95v. It is supposed to read .15v - 4.85v, but that is without the accelerometer connected. I really would prefer not to spend $300 on a scanner. I like buying tools but thankfully I have used the cheapo scanner I own maybe one time. It bi-directional capability what I am looking for?
Moderator, Tech Contributor
Joined: Sep 2013
Posts: 15,411
Likes: 3,964
From: Cape Coral, Florida
You still need to check the low reference and signal...you would jump the 5 volt ref. to the signal and see if the PCM via the scan tool is seeing 5 volts but unfortunately you can’t see that voltage with your scan tool... you may just have to shot gun parts and hopefully it won’t cost you more than a Tech 2 would cost...you don’t need a bi directional scan tool but it would help down the road with future issues you may have...nice being able to turn things like fans, pumps, solenoids, etc on and off.
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1st Gear
Joined: Dec 2020
Posts: 1
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From: Arlington, TX
2001 2002 2003 2003 Corvette ABS EBCM Repair
https://www.absfixer.com/ gets a lot of mentions for ebcm repair on this forum. what year is your vette? older than 2001 your out of luck
We repair these. We.ve repaired thousands over the years. We can also test relay and diodes that are common for failing and have parts available to replace if needed. We operate under 2 names. Our business in DFW where we've been for almost 50 years, AC Speedo Electric at 1231 Colorado Ln in Arlington, Texas 76015 and also on Ebay at Texas Speedometers.
We can be reached at 817-460-7788 M-F 9-5
Thread Starter
4th Gear
Joined: Nov 2020
Posts: 4
Likes: 0
We repair these. We.ve repaired thousands over the years. We can also test relay and diodes that are common for failing and have parts available to replace if needed. We operate under 2 names. Our business in DFW where we've been for almost 50 years, AC Speedo Electric at 1231 Colorado Ln in Arlington, Texas 76015 and also on Ebay at Texas Speedometers.
We can be reached at 817-460-7788 M-F 9-5
We can be reached at 817-460-7788 M-F 9-5
Race Director
Joined: May 2003
Posts: 14,136
Likes: 2,983
From: Iowa
St. Jude Donor '03 thru '26
We repair these. We.ve repaired thousands over the years. We can also test relay and diodes that are common for failing and have parts available to replace if needed. We operate under 2 names. Our business in DFW where we've been for almost 50 years, AC Speedo Electric at 1231 Colorado Ln in Arlington, Texas 76015 and also on Ebay at Texas Speedometers.
We can be reached at 817-460-7788 M-F 9-5
We can be reached at 817-460-7788 M-F 9-5