Hey folks!
I've had a CCS-100 installed on my 2006 C10 for nearly 5 years without issue, until now.
In the process of prepping for an upcoming trip I got a little overzealous with the cruise control servo's pull cable, and the threaded adjustor sleeve at the carb end of the cable snapped. I tried a repair but couldn't get it to engage.
I got in touch with Murph and ordered a replacement servo, which promptly arrived and I got on installing. Swapping out the servo was a simple plug-and-play and all seemed well (slight slack in the cable, no binding and easy operation of the throttle). But when I took her for a test ride, the CC still would not engage. Keypad gave no indication that the servo was doing anything.
At this point I pulled it back apart and checked vacuum. I tested with my finger and a got good pull on the bike>vacuum chamber line, and also from the vacuum chamber>servo line. So I have good vacuum to the servo.
Next I went at it with a voltmeter and some assistance from the internets. At the servo's electrical connector I got 12v on the brown and yellow wires when I hit the decel/accel buttons, 12v constant on the green wire when I hit the on button, 12v on the red wire, .08-.10v on purple wire when brake not applied and 12v with brake applies, 10-12DCv on the blue wire when the bike's kill switch is flipped on, and .01 ohms on black. So I started troubleshooting the servo itself, and this is where things get odd:
Dip switches are set according to the C10 instructions on Murph's site (http://www.murphskits.com/docs/Murphs%20CCS-100%20Installation%20%20Troubleshooting%20Guide.pdf) and the jumper has been removed. But the red troubleshooting LED only lights up when the decel button is pressed. No blinking with the bike running, nothing when I pull the brake, nothing when I hit the on/off buttons or the accel button.
So, here's my mysteries:
1. According to what I've found on the web, I should be getting a lot more from that LED than I am getting.
2. The super low voltage on the purple without the brake applied *may or may not* be preventing the unit from engaging... but when I disconnect the purple wire from the bike I got about 8.5v on the wire at the servo. I'm stumped as to whether perhaps a malfunction at the servo is causing an issue.
3. The constant DC voltage on the blue wire coming from the tach is strikes me as odd... I can't find anything as to whether I should be finding anything on this wire.
Tl:dr
My cruise don't work nemore. Halp!
I've had a CCS-100 installed on my 2006 C10 for nearly 5 years without issue, until now.
In the process of prepping for an upcoming trip I got a little overzealous with the cruise control servo's pull cable, and the threaded adjustor sleeve at the carb end of the cable snapped. I tried a repair but couldn't get it to engage.
I got in touch with Murph and ordered a replacement servo, which promptly arrived and I got on installing. Swapping out the servo was a simple plug-and-play and all seemed well (slight slack in the cable, no binding and easy operation of the throttle). But when I took her for a test ride, the CC still would not engage. Keypad gave no indication that the servo was doing anything.
At this point I pulled it back apart and checked vacuum. I tested with my finger and a got good pull on the bike>vacuum chamber line, and also from the vacuum chamber>servo line. So I have good vacuum to the servo.
Next I went at it with a voltmeter and some assistance from the internets. At the servo's electrical connector I got 12v on the brown and yellow wires when I hit the decel/accel buttons, 12v constant on the green wire when I hit the on button, 12v on the red wire, .08-.10v on purple wire when brake not applied and 12v with brake applies, 10-12DCv on the blue wire when the bike's kill switch is flipped on, and .01 ohms on black. So I started troubleshooting the servo itself, and this is where things get odd:
Dip switches are set according to the C10 instructions on Murph's site (http://www.murphskits.com/docs/Murphs%20CCS-100%20Installation%20%20Troubleshooting%20Guide.pdf) and the jumper has been removed. But the red troubleshooting LED only lights up when the decel button is pressed. No blinking with the bike running, nothing when I pull the brake, nothing when I hit the on/off buttons or the accel button.
So, here's my mysteries:
1. According to what I've found on the web, I should be getting a lot more from that LED than I am getting.
2. The super low voltage on the purple without the brake applied *may or may not* be preventing the unit from engaging... but when I disconnect the purple wire from the bike I got about 8.5v on the wire at the servo. I'm stumped as to whether perhaps a malfunction at the servo is causing an issue.
3. The constant DC voltage on the blue wire coming from the tach is strikes me as odd... I can't find anything as to whether I should be finding anything on this wire.
Tl:dr
My cruise don't work nemore. Halp!