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could ETS actually be dangerous?
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MynamesMike
User
Jan 23, 2009, 11:07 AM
Post #1 of 4
(1529 views)
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could ETS actually be dangerous?
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I've been doing alot of research on ETS and its functions lately, and i've learned many new things. Until recently I thought ETS was a good thing, but I just had a talk with my uncle, who's been a mechanic his whole life. He told me to keep ETS turned off at all times, because its dangerous...?
A scenario he gave me was, " say your pulling out onto the highway from a side road, and that spot is slippery/icy/slushy etc. You would try to go and your tires would spin but eventually you'd get out and be on your way. He said by using ETS, when im trying to pull out it would sense the wheels spinning, and cause the engine to slow down, only allowing the tires to spin so fast, he then said that once I got out of the icey spot, the engine would keep limiting wheel speed for a few seconds, not allowing me to speed up, and it could cause me to get hit by an oncoming car due to the fact that i would be pushing the pedal trying to speed up after im out of the ice, but the engine would not let me.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Jan 23, 2009, 11:38 AM
Post #2 of 4
(1528 views)
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Re: could ETS actually be dangerous?
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Back at you and I want other to chime in too. I'm with your Uncle on this and would keep it OFF except for maybe getting out of a parking spot, up a tricky driveway or incline or if stuck - used just for that time. The car can't see down the road and preduct suface condtitions - YOU can. It's ultimately up to you to slow down or steer around troubles,
T
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MynamesMike
User
Jan 23, 2009, 11:45 AM
Post #3 of 4
(1525 views)
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Re: could ETS actually be dangerous?
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I've also read heard from other mechanics that ETS doesn't slow the engine, it only transfers spinning from one tire to the other, deeming it not dangerous at all, lol. My problem is i'm not sure which is right...grrr, stupid technology!
Thanks again
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Double J
Veteran
/ Moderator
Jan 23, 2009, 11:54 AM
Post #4 of 4
(1519 views)
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Re: could ETS actually be dangerous?
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Here is a brief Description of the ETS operation....
The Enhanced Traction System is designed to limit wheel slip during acceleration. This objective is accomplished by cutting fuel to selected cylinders, retarding spark and upshifting the transmission. The EBCM monitors wheel speed slip through the ABS wheel speed sensors and determines the desired torque reduction needed to minimize wheel spin. The torque reduction the EBCM requests may result in a combination of fuel cutoff, spark retard, and upshifting the transmission, depending on the torque reduction required. This request is sent from the EBCM through the serial data link to the Powertrain Control Module (PCM) The PCM then calculates and employs fuel cutoff and spark retard values to achieve the requested engine torque. If the EBCM determines that the engine torque reduction is not sufficient to minimize wheel spin, it will request a transmission upshift.
The ETS will be enabled when the ETS switch is in the ON position (ETS OFF indicator not illuminated), the engine coolant temperature is within normal operating range and the manifold air temperature is within normal operating range.
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