I appreciate any help/experience you can offer on this:
2003 Honda Accord EX, AT, 140,000 miles, 2.4L 4-cyl
When I turn on the cruise control system, the “Cruise Main” light illuminates and stays on until I turn off the cruise control system. When I go to set the speed, the “Cruise Control” light comes on and the vehicle maintains speed for a little while, then soon the cruise control cuts out. When this happens the “Cruise Control” light turns off and the “Cruise Main” light stays on. The amount of time that the cruise control system actually manages to control the vehicle’s speed seems to be very irregular, but seldom more than a few minutes before it turns off. It’s doesn’t seem to make a difference if the car is driving on uphill, downhill, bumpy, or smooth roads. Usually if I try to set the speed again right away, after it has cut out, the vehicle either does not respond to my pressing the “Set” button (the “Cruise Control” light doesn’t come back on, and the speed is not maintained), or the cruise will maintain speed for only a second or two before cutting out again (with the “Cruise Control” light being on only for as long and the speed is maintained). After it cuts out, if I turn off the “Cruise Main” and then turn it back on, the system responds as if it’s been somehow reset. That is to say that it may stay on a little longer than it would if I had just tried to set the speed again without turning off the “Cruise Main” first; but it will still inevitably turn off unexpectedly again.
I have read just about all that I could find on this subject online and have already eliminated the brake light switch and taillights as potential problems. I did have a center brake light that had been out for a long time, I replaced the bulb and there was no change. I replaced the brake light switch with a new one, also no change. I adjusted the cruise control actuator cable that connects to the throttle body because I thought maybe there was too much slack and the servo was maxing out, but there was also no change after this adjustment. As best as I can tell, all the mechanical systems related to the CC are functioning as they should. I don’t have any issues with the tach reading jumping up and down, or the speedo reading behaving erratically. The cruise control dropping out doesn’t seem to coincide with the automatic transmission shifting up or down either. All of these things lead me to believe that there must be something wrong with the CC servo/actuator itself of whichever part to the system sends a signal to it. I’ve checked the associated fuses, and they all appear to be good. I took the car to get the codes read and only one code came up: “61-1 Battery Voltage Malfunction ABS”. I don’t know what to do about that or if it would have any effect on the CC.
I saw an old thread for a 2003 CR-V on here that read as if it had the exact same issue I’m having, but I don’t think a solution was ever found/posted.
Please help! I do A LOT of cross-country driving and this CC failure is getting really frustrating… Thanks in advance