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01-12-2010, 03:19 PM | #1 |
Drives: 2007 Yaris 4dr Sedan Base Join Date: Nov 2009
Location: Boston, MA
Posts: 18
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Cruise control on 2007 4dr
I read several threads on installing cruise control on the 07-08 yaris and decided to try it, but it doesn't work.
I inserted a wire to the hole for pin 40 on the A21 connector as shown in several threads. I metered this connection and found that the connection works, I get 12.6-12.8 volts when the car is on from the other end of the wire. I decided to do the 4 button install and bought 4 N.O. push buttons and installed them on the empty power mirror panel. I purchased 3 packs of resistors, 220 ohm, 150 ohm, and 680 ohm. Between on/off and +/res I soldered 1 220 ohm (According to my meter it was actually 217). Between +/res and -/set I soldered a 220 and a 150 (370 total, measures 365). Between -/set and cancel I soldered a 680 and a 220 (900 total measures 884). After building it and testing it, I found it didn't work. I added a 22 ohm resistor between on/off and +/res to bring it closer to the middle of the acceptable ranges. It still didn't work. I hooked the the meter to the leads coming out of the buttons and checked the impedance I am getting from this thing I built. They show: No buttons pressed - 1 / no connection on/off button pressed - 1 ohm (possibly from alligator clips connecting leads to device) +/res - 239 ohms -/set - 604 ohms cancel - 1487 ohms The car runs exactly as before, so I don't think I messed anything up. There is no light on the dash to turn on, so i don't know if the system is turning on or not. Nothing appears to happen when I press any of the buttons. Sorry for the long message, but I wanted to include enough info. Any ideas why it doesn't work? |
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