Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB - View Single Post - Steering wheel controls for BRZ HU

basilisk · 01-21-2015, 10:20 PM

Anyone here who, like myself, desperately wants steering wheel controls, and tried OESWC-RF or OESWC-STALK? Successfully or not?

In theory it should fit the bill perfectly, considering that the Fuji Ten unit responds well to the same commands as Toyota HU, but I've kind of hit a dead end.

So, after studying the threads and looking at what other people have attempted to get audio controls, I decided that OESWC-RF looked like an affordable solution that was worth trying, so I bought the following:
- OESWC-RF unit, it comes with the steering wheel mounted transmitter and a receiver (a small plastic box with a 12-pin connector).
- Toyota-specific harness (part number OESWC-8113H). In hindsight, I should have bought OESWC-1761H, then I wouldn't need the 10+6 pin harness at all.
- 10+6 pin combined "breakout" harness from SVXdc (I was going to hook up a subwoofer anyway, so it came in handy).
- 28-pin HU harness from autoharnesshouse.

Toyota-specific harness is basically two pass-through harnesses with an additional connector that goes into the RF receiver.
The 12-pin connector is hooked to +12V acc, +12V const and ground (yellow/red/black) wires on one pair of the connectors, and SWC1/SWC2 (white&green and grey/magenta wires) on another pair of the connectors - so 5 wires total.
I was a little surprised to see that the SWC common pin was not connected to the RF receiver at all, and the wire was just a passthrough.
The remaining 3 loose wires on the 12pin connector are designed for the non-RF version, at least according to the manual, so I left them be.

So, I connected 3 power wires to the "breakout" harness, cut SWC1/SWC2 wires (pins 21 and 22) on the 28-pin harness and connected them to appropriate wires leading to the 12 pin connector.
I followed the instructions to the letter - first, you couple the RF transmitter to the receiver; then when you switch the ignition on, the receiver should "detect" the vehicle type -- and I can't get past that point. The LED light on the receiver is blinking rapidly, which, according to the manual, means that it can't detect the OEM stereo type.
What does it expect to get? Besides 3 power there are only 2 SWC wires to be used in a meaningful way to detect the stereo type.
Is it looking for a specific resistance value so it knows it's a "Toyota"? I'm out of ideas at that point...
Feels so close

Any help is appreciated!

---
2015 WRB BRZ

01-21-2015, 10:20 PM	#1
basilisk Junior Member Join Date: Sep 2014 Drives: 2015 WRB BRZ Limited Location: Texas Posts: 5 Thanks: 0 Thanked 1 Time in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Steering wheel controls for BRZ HU - anyone tried Axxess products? Anyone here who, like myself, desperately wants steering wheel controls, and tried OESWC-RF or OESWC-STALK? Successfully or not? In theory it should fit the bill perfectly, considering that the Fuji Ten unit responds well to the same commands as Toyota HU, but I've kind of hit a dead end. So, after studying the threads and looking at what other people have attempted to get audio controls, I decided that OESWC-RF looked like an affordable solution that was worth trying, so I bought the following: - OESWC-RF unit, it comes with the steering wheel mounted transmitter and a receiver (a small plastic box with a 12-pin connector). - Toyota-specific harness (part number OESWC-8113H). In hindsight, I should have bought OESWC-1761H, then I wouldn't need the 10+6 pin harness at all. - 10+6 pin combined "breakout" harness from SVXdc (I was going to hook up a subwoofer anyway, so it came in handy). - 28-pin HU harness from autoharnesshouse. Toyota-specific harness is basically two pass-through harnesses with an additional connector that goes into the RF receiver. The 12-pin connector is hooked to +12V acc, +12V const and ground (yellow/red/black) wires on one pair of the connectors, and SWC1/SWC2 (white&green and grey/magenta wires) on another pair of the connectors - so 5 wires total. I was a little surprised to see that the SWC common pin was not connected to the RF receiver at all, and the wire was just a passthrough. The remaining 3 loose wires on the 12pin connector are designed for the non-RF version, at least according to the manual, so I left them be. So, I connected 3 power wires to the "breakout" harness, cut SWC1/SWC2 wires (pins 21 and 22) on the 28-pin harness and connected them to appropriate wires leading to the 12 pin connector. I followed the instructions to the letter - first, you couple the RF transmitter to the receiver; then when you switch the ignition on, the receiver should "detect" the vehicle type -- and I can't get past that point. The LED light on the receiver is blinking rapidly, which, according to the manual, means that it can't detect the OEM stereo type. What does it expect to get? Besides 3 power there are only 2 SWC wires to be used in a meaningful way to detect the stereo type. Is it looking for a specific resistance value so it knows it's a "Toyota"? I'm out of ideas at that point... Feels so close Any help is appreciated! --- 2015 WRB BRZ Last edited by basilisk; 01-22-2015 at 01:43 AM.