Codes...codes...codes
Thread Starter
Burning Brakes
Joined: Oct 2005
Posts: 1,020
Likes: 18
From: Anderson SC
Codes...codes...codes
I have a few codes. First of all, I've had the engine out and inadvertently rotated the steering column out of range so that when I start the car and drive it, I get "active handling warming up" on the display. I've looked up the codes in my GM service manuals and found that this particular code is "excessive time to centering". This means the car thinks the front wheels are turning while the steering wheel is straight or vice versa. I know about the sensor under the dash but could someone direct me to it's location, what wires to look for, what it should read when I correct the steering linkage, and how to measure the reading with a multimeter? Now, the other code. I ran race gas through my car once and since then when I drive the car under normal conditions in overdrive, it will throw me a rich bank code. I can put the car in "3" and drive it and it will not show this code at all but the engine rpms are greater in this gear. It seems like at lower rpms that it wants to run rich. Someone told me I may have damaged the oxygen sensors running the race gas in it but I'm not sure.
Race Director
Joined: Apr 2001
Posts: 19,329
Likes: 15
From: Saint Augustine, FL
Mid-TN Events Coordinator
St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15-'16
Originally Posted by 2kvert
I have a few codes. First of all, I've had the engine out and inadvertently rotated the steering column out of range so that when I start the car and drive it, I get "active handling warming up" on the display. I've looked up the codes in my GM service manuals and found that this particular code is "excessive time to centering". This means the car thinks the front wheels are turning while the steering wheel is straight or vice versa. I know about the sensor under the dash but could someone direct me to it's location, what wires to look for, what it should read when I correct the steering linkage, and how to measure the reading with a multimeter? Now, the other code. I ran race gas through my car once and since then when I drive the car under normal conditions in overdrive, it will throw me a rich bank code. I can put the car in "3" and drive it and it will not show this code at all but the engine rpms are greater in this gear. It seems like at lower rpms that it wants to run rich. Someone told me I may have damaged the oxygen sensors running the race gas in it but I'm not sure.
As for where the sensor is, it's at the base of the steering column where it goes through the firewall (on the inside).
Here's some more info on that steering column error :
http://forums.corvetteforum.com/show...=rotate+column
Sounds like they never indexed the steering column when the took the shaft apart. There is a sensor on the steering column which tells the AH/ETCM what the steering angle is at. This combined with wheel speed sensor readings, lateral forces, etc.... is how the system works.
When you remove the steering shaft from the rack the steering column can rotate several revolutions if you don't lock the column. I usually pull the car in dead straight and lock the steering column. When I reassemble, all I need to do is get the front wheels straight and reattach the shaft.
I believe that code is because the AH module is seeing all four tires spinning at the same RPM but it sees a steering angle that is a turn.
This is a very common mistake! You made need a TECH2 scanner to read the current steering angle when the wheels are straight....it should be zero!
When you remove the steering shaft from the rack the steering column can rotate several revolutions if you don't lock the column. I usually pull the car in dead straight and lock the steering column. When I reassemble, all I need to do is get the front wheels straight and reattach the shaft.
I believe that code is because the AH module is seeing all four tires spinning at the same RPM but it sees a steering angle that is a turn.
This is a very common mistake! You made need a TECH2 scanner to read the current steering angle when the wheels are straight....it should be zero!
Last edited by JR_VETTE; Sep 18, 2006 at 11:27 AM.
