Active Handling Warming Up?
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Joined: Mar 2007
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From: Baxter Minnesota
Active Handling Warming Up?
Haven't had my 00 C5 out since early December, but with the roads clear I decided to move it to a heated garage to install cat back. Temp was around 0 when I started-DIC displayed active handling warming up. DIC stayed the same for the 20 minutes or so that I drove. Is this anything to be concerned about? Also my RF DDL and turn signal didn't work.
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Safety Car
Joined: Aug 2000
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From: San Rafael CA
"Active Handling Warming Up" when the EBCM is trying to calibrate the Steering Wheel Position Sensor (SWPS) after engine start. The EBCM needs the car on a flat surface, steering straight ahead (it can tell from the yaw and lateral accelerometers that the car is moving in a straight line) and the car speed must be over 6 MPH, and all of this has to occur for 10 seconds. The EBCM will display the "warming up" message (and turn on the A/H and T/C warning lamps) to warn you that it has not completed its initialization sequence, and until it does, A/H and T/C are disabled. When the EBCM completes its initialization, the DIC will display WARM UP COMPLETE and the A/H and T/C warning lamps will go out as those systems are now active.
If the "Warming Up" message is starting to appear regularly on your Corvette, especially if you've already been driving for a while, that is a symptom that your SWPS may be starting to fail.
If the "Warming Up" message is starting to appear regularly on your Corvette, especially if you've already been driving for a while, that is a symptom that your SWPS may be starting to fail.
Instructor
Joined: Dec 2007
Posts: 210
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From: CA
"Active Handling Warming Up" when the EBCM is trying to calibrate the Steering Wheel Position Sensor (SWPS) after engine start. The EBCM needs the car on a flat surface, steering straight ahead (it can tell from the yaw and lateral accelerometers that the car is moving in a straight line) and the car speed must be over 6 MPH, and all of this has to occur for 10 seconds. The EBCM will display the "warming up" message (and turn on the A/H and T/C warning lamps) to warn you that it has not completed its initialization sequence, and until it does, A/H and T/C are disabled. When the EBCM completes its initialization, the DIC will display WARM UP COMPLETE and the A/H and T/C warning lamps will go out as those systems are now active.
If the "Warming Up" message is starting to appear regularly on your Corvette, especially if you've already been driving for a while, that is a symptom that your SWPS may be starting to fail.
If the "Warming Up" message is starting to appear regularly on your Corvette, especially if you've already been driving for a while, that is a symptom that your SWPS may be starting to fail.
Safety Car
Joined: Aug 2000
Posts: 4,933
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From: San Rafael CA
https://www.corvetteforum.com/techti...D=26&TopicID=1
It is easiest to write down the codes in MANUAL mode, as they scroll by pretty quickly in the initial scan mode. Post ALL the codes in a new thread, and someone will look them up in the Service Manual and help you diagnose the problem. Be certain to post the ENTIRE code .... it will look something like P1234C or C9898H .... the first letter indicates the code type (Powertrain, Chassis, etc.) followed by 4 digits and then an H or a C (sometimes both) indicating if the code is a History code (problem occured but is no longer occuring) or Current (problem is happening now). .
You can simply delete any Uxxxx codes, they are common and occur because the data bus sometimes is so busy that a computer can't talk with another computer at the moment it wants to.
Last edited by BlackZ06; Jan 26, 2008 at 03:20 AM.
Drifting
Joined: May 2000
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From: Southern NH
A faulty Intake Air Temp sensor can be related to this since the EBCM uses that sensor to determine ambient air temp as part of the calibration routine. IAT is on the intake and it's common for its wiring to fray resulting in erroneous sensor readings. As noted, check the DIC codes - if any of the codes are related to IAT reading then I'd check that connector carefully.
Thread Starter
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Joined: Mar 2007
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From: Baxter Minnesota
Thanks-as usual I learn a lot from forum members. While my catback was being installed she warmed up in a heated garage overnight. Drove it next day and all was fine. Interesting about the IAT. Thanks again!
Safety Car
Joined: Aug 2000
Posts: 4,933
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From: San Rafael CA
A faulty Intake Air Temp sensor can be related to this since the EBCM uses that sensor to determine ambient air temp as part of the calibration routine. IAT is on the intake and it's common for its wiring to fray resulting in erroneous sensor readings. As noted, check the DIC codes - if any of the codes are related to IAT reading then I'd check that connector carefully.
Thanks,
Race Director
Joined: Mar 2000
Posts: 17,602
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From: Palm City Florida
In 2001 the IAT sensor was incorporated into the MAF..
