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Which fuse controls the speed control and the 4WD engage? I assume they are on the same fuse since they quit working at the same time. This is a 2006 RAM 1500.

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  • Cars & Trucks Master
  • 14,585 Answers

Year make and model helps. Older vehicles have a fuse for cruise/speed control, but not for 4X4. Newer ones have a fuse for 4X4, but not cruise. If are talking speedometer/speed sensor, The PCM/ECM is what controls them.

Posted on Dec 17, 2016

Testimonial: "Thanks for the reply. Unfortunately I am still in the dark on both issues."

  • 6 more comments 
  • Randy Ohler Dec 17, 2016

    How about the year make and model?

  • Randy Ohler Dec 17, 2016

    Were you talking cruise control or speed sensor?

  • Mike Blaine
    Mike Blaine Dec 17, 2016

    I was talking about the speed control. Also, I just checked the 4WD while sitting in the garage where I can hear it. I hear it engage for both the regular mode and the low speed mode. But the 4WD indicator light never stops blinking on the dash.

  • Mike Blaine
    Mike Blaine Dec 17, 2016

    2006 RAM 1500. I added that at the end of the original question. sorry for the confusion.

  • Randy Ohler Dec 17, 2016

    Ok, with the 4X4, You push the button. There are 3 settings. 2wd, 4 high, and 4 low. Hitting each one, do you hear it shift. Have the transmission in neutral when you do it. If you only hear 2 shifts, Then most likely causes are a bad switch or bad wire to the 4wd controller. I won't rule out the controller or motor either. needs to be scanned. You don't have a fuse problem because it partially works. Your cruise control is a separate issue. This could be the switch, clock spring, wiring from there to the PCM, from the PCM to the cruise controller. This also needs scanned.

  • Randy Ohler Dec 17, 2016

    06. The motor is an encoder motor. Has the controller built in. You have an electronic throttle. So the cruise is controlled by the switch, wiring, PCM, and throttle body. Both are separate areas. Most shops will scan for free, give you codes. None of these parts are cheap, except the switches. But they range from $20 to $70.

  • Mike Blaine
    Mike Blaine Dec 17, 2016

    Thanks for the help. I appreciate it.

  • Randy Ohler Dec 17, 2016

    You really need the codes. Wiring seems intact for the 4wd, but the cruise is way different. But I don't use cruise control.

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