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From: The second childhood is the best one of all.
Strange code
My DIC said "active handling warming up" or something like that this morning. I'd driven the car 1 1/2 miles to a gas station. Turned off the engine and checked the air pressure in the tires. I got the code when I restarted the car. I turned the car off for a minute or two and the code was gone when I restarted it. Anyone seen that before?
From: I speak the truth. Harsh but accurate. The Woodlands Texas
St. Jude Donor '09-'10
I have read that is is a normal code. I have seen it 2 times on my 04. First message is "Active handeling warming up" then followed a few seconds later by "Warm up complete" kind of remaind me of the Austin Powers movie when they thawed him out. I do not think that this is a problem as it has never thrown a code.
From: The second childhood is the best one of all.
Originally Posted by Omega Man
I have read that is is a normal code. I have seen it 2 times on my 04. First message is "Active handeling warming up" then followed a few seconds later by "Warm up complete" kind of remaind me of the Austin Powers movie when they thawed him out. I do not think that this is a problem as it has never thrown a code.
If someone can explain it better please do.
It's friggin 90 degrees here. What a strange day to see that code.
My car does the same thing if I turn it sharply just after starting out of a parking space. It seems like the car senses the extreme manuever as a precurser to "getting it on" and it just wants to be prepared. It is not a problem.
Found this posted by glass slipper back in July 05: To calibrate wheel speed sensors relative to each other (to sense turns, radius of turns, etc), the computer is looking for 100' of driving with the steering wheel straight within the first 30 seconds of driving. If you're driving through a parking garage/lot or autocrossing where the course turns immediately and the computer doesn't see this, you'll get the "active handling warming up" which tells you active handling is not available so drive accordingly. This is because it can't make active handling calculations without that info. Once you've driven that 100' with wheels straight, it enables active handling. If you ever disconnect the steering shaft from the steering rack, it is imperative the steering wheel not be turned or when you reconnect the coupling, the computer will sense the steering wheel is turned even though you are going straight. This means the computer will never "see" you going straight and active handling will never be enabled....don't ask me how I know. Damn the school of hard knocks! http://forums.corvetteforum.com/show...56&forum_id=49
It is normal and as Tom73 mentioned above, your Active Handling is going through calibration. Once calibration is complete, you should receive the message, WARM UP COMPLETE. The first message is to let you know that Active Handling is off and not available until the WARM UP COMPLETE message is received.
This is covered in your 2002 owner's manual in Section 2 under DIC Warnings and Messages as follows:
ACT HNDLG - WARMING UP: When you first start your vehicle (especially during cold winter weather), and begin to drive away (up to 6 mph (10 km/h)), the message ACT HNDLG - WARMING UP may be displayed in the DIC, the instrument panel cluster light will be on, and a chime will sound. This is normal. You can acknowledge this message by pressing the RESET button. The Active Handling System performance is affected until the next message WARM UP COMPLETE is displayed in the DIC. During hot or cold temperature conditions, this message may be displayed in the DIC after exceeding 12 mph (20 kph) for 30 seconds. The Active Handling System is off until the WARM UP COMPLETE message is displayed.
WARM UP COMPLETE: If you receive this message and hear a chime, the system has completed the functional check of the Active Handling System.
Although the above description of how the Active Handling calibrates during intial driving is accurate, I'm going to take a step back and look at it from a different angle. I wouldn't expect the warmup procedure to occur in the summer UNLESS there is a problem with your IAT sensor.
Have you checked your DIC codes? Are there any related to IAT temp such as P0113 or P1111? The reason I ask is that the Active Handling system uses the Intake Air Temp reading to determine the ambient temperature. If the temp reading is being reported erroneously low, the AH system needs to compensate for the cold temp during it's initial calibration routine and you'll get that message.
It's very common for the IAT sensor connector to have a problem with one of the wires breaking or making an intermittent connection resulting in an erroneous low temp reading. If that's the case, you should have one of the above codes. It is also possible that the IAT sensor itself is going bad, and if that's the case you can verify by putting an ohm meter across the sensor leads and measuring it's impedance. At 68*F, it should measure 3520 ohms, at 77*F/2796 ohms, 86*F/2238 ohms, 95*F/1802 ohms. Basically the impedance decreases as the temp increases. If your reading is very high, like greater than 9000 ohms, it's reporting a temp below freezing.
If that's not your problem then it could be one of the other sensors related to the initialization of active handling like the steering position sensor. Hope this helps.
Last edited by JC in XTC5; Jul 30, 2006 at 01:01 PM.