Active handling comes on for no reason
Thread Starter
Advanced
Joined: Apr 2008
Posts: 57
Likes: 2
From: Hudson NH
Active handling comes on for no reason
Hi, tried a search and nothing came up. For the last couple of days active handling has come on while driving at 60 - 70 MPH flat dry road. It seems to be hitting the brakes on the passenger side rear wheel and seems kind of dangerous. Does anyone know what causes this and how I can troubleshoot it?
Thanks.
Thanks.
Drifting
Joined: Apr 2007
Posts: 1,496
Likes: 1
From: LEBANON PA.
Hi There:
Check the simple things first. Is your air bridge coupling loose? Are your tires balanced? What codes are being displayed on the DIC? Dealer would have to check the yaw sensor. Possibly a bad yaw sensor if going in a straight line & at highway speeds & the brakes are being applied & the a/handing message is displayed.
robsc501
Check the simple things first. Is your air bridge coupling loose? Are your tires balanced? What codes are being displayed on the DIC? Dealer would have to check the yaw sensor. Possibly a bad yaw sensor if going in a straight line & at highway speeds & the brakes are being applied & the a/handing message is displayed.
robsc501
Le Mans Master
Joined: May 2006
Posts: 7,850
Likes: 236
From: Hillsboro OR
Mine was the Steering Wheel Position Sensor. Eventually, I started to get the P1287 code with it. It's pretty scary driving down the freeway at 65 mph and the "system" decides to "tap" one of the front brakes. 
I hope you figure it out soon.
Pro
Joined: Dec 2002
Posts: 597
Likes: 9
From: near Newburypot MA
Thread Starter
Advanced
Joined: Apr 2008
Posts: 57
Likes: 2
From: Hudson NH
Thanks for all of the answers. It is an 01, I have not changed the tires. Robsc501, what is the air bridge coupling? And I'm not getting any codes.
Can anyone recommend a place in southern NH to look at it? We have a big dealership in Nashua, MacMulkin but I am not impressed by their service department from many non-vett's I have brought there.
Can anyone recommend a place in southern NH to look at it? We have a big dealership in Nashua, MacMulkin but I am not impressed by their service department from many non-vett's I have brought there.
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Instructor
Joined: Oct 2008
Posts: 101
Likes: 1
From: Tewksbury Massachusetts
I know folks who swear by MacMulkin for their 'Vettes, and there's are worth alot more than mine.
I haven't needed service yet, so I can't speak first hand.
They are a sponsor here on the Forum, and typically get good reviews.
Good Luck!!
I haven't needed service yet, so I can't speak first hand.
They are a sponsor here on the Forum, and typically get good reviews.
Good Luck!!
Le Mans Master
Joined: May 2006
Posts: 7,850
Likes: 236
From: Hillsboro OR
The dealership should be able to connect to a Tech II scanner and test the SWPS. It tests for: Power (+5V), GND. It also looks for linear voltage sweeps (0 - 5V) from both of the sensor outputs (A & B) that are 90 degrees out of phase to each other.
Tech Contributor
Joined: Dec 2003
Posts: 19,384
Likes: 87
From: Horncastle Lincolnshire, England
2023 C5 of the Year Finalist - Unmodified
With no codes I'd start with the simple things first.
Are your tire pressures even? A low pressure at one corner will affect AH
Pull the connectors at the wheel hubs and clean them up. A false voltage at one hub will cause a trip.
It could be so many things. Without codes you'd be changing things on spec.
Are your tire pressures even? A low pressure at one corner will affect AH
Pull the connectors at the wheel hubs and clean them up. A false voltage at one hub will cause a trip.
It could be so many things. Without codes you'd be changing things on spec.
Safety Car
Joined: Apr 2007
Posts: 3,640
Likes: 83
From: . New York
Team Owner
Joined: Apr 2001
Posts: 54,204
Likes: 180
From: S.W. Ohio. . . . . . NRA Life Member
I've understood that Traction Control does that, btu this is the first time I've heard of AH doing it.
interesting.
