what can kill the cruise control?
 

hey guys, i am trying to track down my stupid hesitation. one of the symtoms i noticed is that the cruise control would go out from time to time, most likely during one of the misfire. my question is does anyone know what the ecu reads as a cutoff for the cruise control. i assume it is the brake switch, clutch switch. now what about fuel timing and all the others? thx

how do you misfire while cruising? :confused: going up hill without downshifting?

i think the ecu detects many things that can turn off cruise.

Hmmm...when are you using your CC??? I only use it while cruising on an open freeway. Not sure why anyone would be pressing the clutch to kill it, when tapping the brakes makes more sense, or simply turning CC off. If you're car is misfiring that's a separate issue you should look in to.

thats what i am trying to do. the cruise control kills itself, i wantt to find out what sensor or switch is making it do that. i already tightened my brake pedal sensor, but it is still doing it. the car is not throwing a cel, need to do everything i can to find it. nissan wont recogjnize the problem until the cel is on, so going to them would be a waste of my time

That sucks. If its easy to reproduce have you showed them first hand? If they see it for themselves, I think it would be difficult for them NOT to help you.

they will try everyway to avoid it or claim they dont feel it even though the car can buck like crazy. i recorded videos and am getting a datalogger tomorrow to see what the hell the car is doing. of course intermittent problem never shows up when you are tgere

nissan makes good cars, but their intermitten problems and customer service drives me nuts. plus if i give them the car now, i could be without a car for two weeks during the summer months. i am hoping it will go away on its own or get worse before i take it in november for some work

On my WS6 my TPS sensor was glitching out. That did it.

i am waiting on my obd2 datalogger to see if i can find spikes in throttle position. i still think it might be fuel pressure since tps position doesnt cancel cruise control

Well, the POS it was, my WS6 had a faulty ground that killed the fuel pump randomly, too, lol. That might be something to look at.

My cruise control was shutting off last summer and the Nissan dealer had to replace a few parts. Now it is happening again and I have made an appointment with the Nissan dealer to find a solution.

i dont have the specifics, but only 4 main things control it. it should be easy to track if you have no error codes, i would look into the brake switch first.

You have any mods?

No mods on my 370Z.

Did the dealer replaced the parts under warranty ?. My Cruise Control is not engaging as well, the CRUISE light comes up, but the CC want set the speed..

My car is still under warranty, planning to take it to the dealer next week.

From the service manual, not sure if this helps:

CANCEL OPERATION
When any of following conditions exist, cruise operation will be canceled.
• CANCEL switch is pressed
• More than 2 switches at ASCD steering switch are pressed at the same time (Set speed will be cleared)
• Brake pedal is depressed
• Clutch pedal is depressed or gear position is changed to neutral position. (M/T models)
• Selector lever is the N, P, R position (A/T models)
• Vehicle speed decreased to 13 km/h (8 MPH) lower than the set speed
• TCS system is operated

When the ECM detects any of the following conditions, the ECM will cancel the cruise operation and inform
the driver by blinking indicator lamp.
• Engine coolant temperature is slightly higher than the normal operating temperature, CRUISE lamp may
blink slowly.
When the engine coolant temperature decreases to the normal operating temperature, CRUISE lamp will
stop blinking and the cruise operation will be able to work by pressing SET/COAST switch or RESUME/
ACCELERATE switch.
• Malfunction for some self-diagnoses regarding ASCD control: SET lamp will blink quickly.
If MAIN switch is turned to OFF while ASCD is activated, all of ASCD operations will be canceled and vehicle
speed memory will be erased.