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Weird cruise control

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Old Aug 10, 2014 | 06:28 AM
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Default Weird cruise control

Works perfectly with (M6) in 4th gear but get almost immediate dis-engage if trans is in 5th, clutch and brake switches ok
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Old Aug 10, 2014 | 08:48 AM
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That's a new one. DIC codes should provide an insight.





If you don't know how here is something to look at:

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Old Aug 10, 2014 | 12:44 PM
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The cruise control function comes out of the TAC module. It doesn't care what gear you are in so, the fifth gear selection its self should have nothing to do with it.

Try this (Yes I know that you said the switches are fine) Pull up on the Brake peddle with your foot and try the fifth gear test. Then do the same for the clutch.

Next. Put it in fourth and engage cruise. While in cruise, press the accelerator (while still in cruise) and accelerate and then let off and see if it drops out.

When it drops out in fifth, without changing anything immediately read the PCM DTCs

Bill
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Old Aug 11, 2014 | 06:22 AM
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Default weird cruise

1571h
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Old Aug 11, 2014 | 09:30 PM
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Hmmmmmm.... DTC P1571 Traction Control Torque Request
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Old Aug 12, 2014 | 07:24 AM
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Default weird cruise control

Tried raising both brake and clutch with no change also with traction control on and off. I have one button for TC, no active handling I think but coilovers are installed, think that makes a difference?
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Old Aug 12, 2014 | 06:19 PM
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Please complete Bill's requests in the 3r sentence and report the result.
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Old Aug 14, 2014 | 06:22 AM
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Default weird cruise control

With car in 4th with cruise control on if I accelerate then let off will resume the set MPH. No PCM codes after reset after this trial of the cruise control. I noticed the clutch switch does not rachet out like the brake switches, do you have to screw that one out?
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Old Aug 14, 2014 | 04:35 PM
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Thanks for the info. Will get you an answer on the clutch switch in the morning as I am not at home now.
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Old Aug 15, 2014 | 06:52 AM
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There is no adjustment on the clutch switch, it is attached to a bracket that just bolts on. Remember it is the one at the top of the pedal and the start interlock switch is at the bottom.
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Old Oct 2, 2015 | 10:53 AM
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SO, what happened? No more responses? Did you get it figured out?
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Old Oct 2, 2015 | 01:06 PM
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The P1571 is normal if the car is a 97.
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Old Oct 2, 2015 | 01:21 PM
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Originally Posted by lionelhutz
The P1571 is normal if the car is a 97.
gotch ya... Thanks
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