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04-18-2014, 03:55 PM | #1 |
Scooby Specialist
Member#: 375462
Join Date: Dec 2013
Chapter/Region:
NWIC
Location: Portland, OR
Vehicle:2006 Impreza WRX STI WR Blue |
2006 STI, blinking cruise without CEL
Having a really weird (non?)issue over the last 3 days where, occasionally, after starting my car, I have been getting a flashing cruise without CEL.
Cruise functions fine and no DTCs can be pulled from the ECU (cannot pull cruise-specific DTCs without SSM). Clicking cruise on, then off resets the blinking indicator. This has happened twice now. The third incident (which actually took place between the other two) was a little different, in that I did get a CEL (P0223), which indicates a TPS issue. This time, the car appeared to be in limp mode, and I couldn't get a throttle response out of the pedal itself, though I was stopped so I only tested it to around 25-35% pedal position. I reset the DTC, and everything seemed fine. Due to the intermittent nature, I would lean towards an electronic component going out (DBW assembly?), with a second guess of a wiring condition. Anyone had similar symptoms before something decided to take a dive?
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04-18-2014, 04:13 PM | #2 |
Scooby Specialist
Member#: 280572
Join Date: Apr 2011
Chapter/Region:
E. Canada
Location: southern ontario canada
Vehicle:2011 sti sedan plasma blue pearl |
Could be the dbw system or a common issue otherwise would contribute to a loose or defective gas cap???
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04-18-2014, 05:32 PM | #3 |
Scooby Specialist
Member#: 375462
Join Date: Dec 2013
Chapter/Region:
NWIC
Location: Portland, OR
Vehicle:2006 Impreza WRX STI WR Blue |
Wouldn't that be an EVAP-related CEL?
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04-18-2014, 06:16 PM | #4 |
Scooby Specialist
Member#: 280572
Join Date: Apr 2011
Chapter/Region:
E. Canada
Location: southern ontario canada
Vehicle:2011 sti sedan plasma blue pearl |
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04-23-2014, 09:09 AM | #5 |
Scooby Newbie
Member#: 387122
Join Date: Apr 2014
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my 13 was having the same issue last night after doin a few pulls.
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04-23-2014, 11:03 AM | #6 |
Scooby Specialist
Member#: 375462
Join Date: Dec 2013
Chapter/Region:
NWIC
Location: Portland, OR
Vehicle:2006 Impreza WRX STI WR Blue |
P0223 is a TPS/Pedal position CEL, not EVAP, but I think I figured out what the problem was:
I had a Brodit dash-mounted iPhone charger/cradle with a hard-wired 12V to USB converter. I realized a few days back that the 12V to USB module had burned out. I also noticed that ever since my phone stopped charging, I haven't had the Cruise/CEL issue. Sounds like failing electronics possibly causing a voltage fluctuation on ignition. Considering how sensitive the ECU is to voltage changes, I'm gonna take a wild guess and say this was the issue. I'll follow-up if there are any other developments - fingers crossed that it's been resolved. |
05-03-2014, 09:38 PM | #7 |
Scooby Specialist
Member#: 375462
Join Date: Dec 2013
Chapter/Region:
NWIC
Location: Portland, OR
Vehicle:2006 Impreza WRX STI WR Blue |
Got the replacement 12V to 5V (USB) adapter and wired it in. Problems came back within a day (and worse than before).
I experienced blinking Cruise, blinking Cruise & CEL w/no throttle (both on start-up, and in traffic), racing throttle (just like the whole Toyota ordeal), sporadic throttle. Pulled the in-line fuse to the adapter and problems disappeared. Looks like wiring a non-FCC/CE certified switching power supply into a DBW car isn't such a good idea... I may try to do some lab testing on this power supply itself (for the hell of it), but I'll need to source a LISN and oscilloscope... sure was nice having all this test equipment on hand back in college. Now that I think back, when I originally wired this in, the FM radio reception used to completely drop off when the phone was plugged in. Once I re-attached the antenna amplifier to the glass, that problem went away but it was clearly putting conducted emissions into the system. |
05-04-2014, 11:01 AM | #8 | |
Scooby Newbie
Member#: 185688
Join Date: Jul 2008
Chapter/Region:
NESIC
Location: Maine
Vehicle:2006 STi WR Blue |
Quote:
I had an issue on my 08 WRX where I would get the random flashing cruise light, turned out to be one of the wheel speed sensors for the ABS. |
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