Searched around, VSC off light, nothing else.
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Driver School Candidate
Joined: Oct 2015
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From: Florida
Searched around, VSC off light, nothing else.
Just picked up a new to me 99 GS300 with 120k on the clock. It has just the VSC light on, no CEL light or ABS light. Stops and goes fine, isn't in limp. If this were a bad wheel speed sensor, wouldn't it also throw the ABS light on?
Tried to pull a code from it and the OBD II port seems dead. Probably a fuse, no?
Tried to pull a code from it and the OBD II port seems dead. Probably a fuse, no?
Driver
Joined: Sep 2015
Posts: 125
Likes: 1
From: Missouri
Yes, a bad wheel speed sensor would also throw an ABS light. Does the ABS light work? Should come on for 5 seconds or so on initial start up for self check.
Yes, a dead OBD port is usually a fuse.
This happened to mine when I aligned it and forgot to reset the steering angle sensor.......
Yes, a dead OBD port is usually a fuse.
This happened to mine when I aligned it and forgot to reset the steering angle sensor.......
Thread Starter
Driver School Candidate
Joined: Oct 2015
Posts: 9
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From: Florida
The ABS light does illuminate on initial start. I plan on calling the dealership where this was serviced and see if they'll give me a complete service history on it. Lil old grandma owned it before me, was religious on her servicing before it sat for 8 months.
Guess I'll replace that fuse in the morning and see if it has any stored codes.
Guess I'll replace that fuse in the morning and see if it has any stored codes.
Yes, a bad wheel speed sensor would also throw an ABS light. Does the ABS light work? Should come on for 5 seconds or so on initial start up for self check.
Yes, a dead OBD port is usually a fuse.
This happened to mine when I aligned it and forgot to reset the steering angle sensor.......
Yes, a dead OBD port is usually a fuse.
This happened to mine when I aligned it and forgot to reset the steering angle sensor.......
Thread Starter
Driver School Candidate
Joined: Oct 2015
Posts: 9
Likes: 0
From: Florida
7.5a obd fuse was indeed blown, replaced it and ran codes. Nothing found. Checked and tested all fuses in the car and under the hood, nothing is blown. Next junkyard trip, guess I'll pull a bunch of relays so I can test them against mine.
Still scratching my head at this issue.
Still scratching my head at this issue.
Last edited by lilHusky; Oct 27, 2015 at 08:03 AM. Reason: Additional rambling
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Joined: Feb 2012
Posts: 558
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From: NJ
If only to eliminate the obvious, remove the speed sensor and connect a multi-meter to it.
It should read 1.67 ohms of resistance.
If so, then connect it to the wheel spindle and turn the front or rear wheel by hand.
You should see the resistance flip-flop between 1.67 and 1.64(?) ohms.
If so, you know the spindle and speed sensor are playing well together.
If not, my guess is that the sending unit (I guess it behaves more like an armature) within the spindle is bad.
My $.02
It should read 1.67 ohms of resistance.
If so, then connect it to the wheel spindle and turn the front or rear wheel by hand.
You should see the resistance flip-flop between 1.67 and 1.64(?) ohms.
If so, you know the spindle and speed sensor are playing well together.
If not, my guess is that the sending unit (I guess it behaves more like an armature) within the spindle is bad.
My $.02
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Driver
Joined: Sep 2015
Posts: 125
Likes: 1
From: Missouri
You can check that speed sensor as described above although I doubt the resistance value given is correct. Just make sure it matches the other side.
That being said, if it were a speed sensor, which I doubt, then you would have an abs light along with the vsc and there would definitely be a code set in the abs computer.
What are you checking the codes with?
Check your codes after you see the vsc light come on and do so without turning the car off. Keep it on the same ignition cycle. The problem likely happens for a split second and then goes away, putting the code into history so you wont see it when you scan after you've cycled the key a few times.
I'd still put money on the steering angle sensor being the culprit. Or early signs of battery failure. Its very easily overlooked.
That being said, if it were a speed sensor, which I doubt, then you would have an abs light along with the vsc and there would definitely be a code set in the abs computer.
What are you checking the codes with?
Check your codes after you see the vsc light come on and do so without turning the car off. Keep it on the same ignition cycle. The problem likely happens for a split second and then goes away, putting the code into history so you wont see it when you scan after you've cycled the key a few times.
I'd still put money on the steering angle sensor being the culprit. Or early signs of battery failure. Its very easily overlooked.
Last edited by Gdwrench35; Oct 27, 2015 at 07:20 PM.
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Thread Starter
Driver School Candidate
Joined: Oct 2015
Posts: 9
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From: Florida
Checking codes with a handheld cheapo OBD scanner at the moment. I'd like to venture over to a friend's shop and put it on an Alldata, see what the sensors are doing in real time.
Battery is brand new, so that's ruled out. Alternator is as well.
Battery is brand new, so that's ruled out. Alternator is as well.
Thread Starter
Driver School Candidate
Joined: Oct 2015
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From: Florida
Alright, found out what the issue is. Car had a bunch of stored codes relating to the battery voltage and alternator. Seems that ticked off the yaw rate sensor which is now out of calibration. In theory, that's a quick wire jumper away from a reset if the sensor is still good.
Will keep this updated with the fix when I try jumpering it this weekend.
Will keep this updated with the fix when I try jumpering it this weekend.
Driver
Joined: Sep 2015
Posts: 125
Likes: 1
From: Missouri
Alldata is a service information and business software provider used in the automotive industry. Data stream would allow you to see what the sensors are doing in real time.
Sounds like you have a bad battery, poor connections, or a bad alternator. The likelihoods are in that order. Steer angle sensors (yaw rate sensors) are very sensitive to voltage and are some of the first to be affected by incorrect operating voltage. As I mentioned before, a bad battery is easily overlooked.
Sounds like you have a bad battery, poor connections, or a bad alternator. The likelihoods are in that order. Steer angle sensors (yaw rate sensors) are very sensitive to voltage and are some of the first to be affected by incorrect operating voltage. As I mentioned before, a bad battery is easily overlooked.
Thread Starter
Driver School Candidate
Joined: Oct 2015
Posts: 9
Likes: 0
From: Florida
Alldata is a service information and business software provider used in the automotive industry. Data stream would allow you to see what the sensors are doing in real time.
Sounds like you have a bad battery, poor connections, or a bad alternator. The likelihoods are in that order. Steer angle sensors (yaw rate sensors) are very sensitive to voltage and are some of the first to be affected by incorrect operating voltage. As I mentioned before, a bad battery is easily overlooked.
Sounds like you have a bad battery, poor connections, or a bad alternator. The likelihoods are in that order. Steer angle sensors (yaw rate sensors) are very sensitive to voltage and are some of the first to be affected by incorrect operating voltage. As I mentioned before, a bad battery is easily overlooked.
Driver
Joined: Sep 2015
Posts: 125
Likes: 1
From: Missouri
I came from the Subaru world
Not at all.
A lot of cheap code readers will reset that stuff. Most part stores around here have them to use free of charge. Not sure about your area.
Do you need an alignment? Resetting that is part of the service.
Got any small friends?
Thread Starter
Driver School Candidate
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From: Florida
Haha, maybe I can convince the better half to do it as this is her daily. Her small size and hands have come in handy with my Miata many times.
Then again I do need to yank the driver's seat to clean and grease the tracks. Honeydo list is strong with this one, at least the timing service got done today.
Alignment is good on it. Tires are from 2011 and show nice even wear.
Then again I do need to yank the driver's seat to clean and grease the tracks. Honeydo list is strong with this one, at least the timing service got done today.
Alignment is good on it. Tires are from 2011 and show nice even wear.
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