Page 1 of 1
p28 with OBD2a built in adaptor analog input
Posted: Wed May 16, 2012 10:10 pm
by Kiwi_racer
I have a p28 s300 with a built in OBD2a adaptor.
Car is currently running and according to the Hondata manual D12 on the OBD1 (EGRL) is used for analog 1.
On the OBD2a D9 is the EGRL channel so I have had a 0.1uF capacitor inserted into C42 on the board.
Have tried wiring up the sensor according to Hondata instructions but am not getting any reading.
Do these ecu's use this channel?
Any help would be appreciated.
I have set the settings in the Smanager, do I need to enable the sensor or should it be getting a signal?
Re: p28 with OBD2a built in adaptor analog input
Posted: Thu May 17, 2012 9:52 am
by Spunkster
http://www.hondata.com/help/smanager/ecuconnectors.htm
The built in adapter harness does not have this circuitry. YOu will have to connect it directly to the ECU circuit board at the correct pin.
Re: p28 with OBD2a built in adaptor analog input
Posted: Thu May 17, 2012 1:06 pm
by Kiwi_racer
Thank you very much Spunkster.
So I guess I'll have to trace the circuit back or find the D12 pin location and solder a wire in place is this what you are saying?
Re: p28 with OBD2a built in adaptor analog input
Posted: Thu May 17, 2012 1:54 pm
by Spunkster
Correct
Re: p28 with OBD2a built in adaptor analog input
Posted: Thu May 17, 2012 2:52 pm
by Kiwi_racer
Spunkster wrote:Correct
Thanks heaps.
Hi from Al Stewart and all the NZ Honda cup guys btw
Re: p28 with OBD2a built in adaptor analog input
Posted: Thu May 17, 2012 3:05 pm
by Kiwi_racer
Spunkster wrote:Correct
Spunkster sorry to be a pain but can you tell me which pin I need to solder onto? I realize it is D12 but could you post a picture for me perhaps?
Thanks in advance
Re: p28 with OBD2a built in adaptor analog input
Posted: Thu May 17, 2012 3:36 pm
by Kiwi_racer
Kiwi_racer wrote:
Thank you very much Spunkster.
So I guess I'll have to trace the circuit back or find the D12 pin location and solder a wire in place is this what you are saying?
Spunkster I just did a continuity test from D9 OBD2a to D12 on the board and I got a signal.
Is there something else missing?
Re: p28 with OBD2a built in adaptor analog input
Posted: Thu May 17, 2012 4:21 pm
by Spunkster
If you have continuity then it should work. Make sure you have the the necessary components for D12 to work.
http://www.hondata.com/help/smanager/an ... ghtsub=d12
Re: p28 with OBD2a built in adaptor analog input
Posted: Sat May 19, 2012 8:24 pm
by Kiwi_racer
Hiya Spunkster,
all working now
Cheers :)