How to wire BLU/BLK from valve timing pressure switch?

[mrsarit]

Could you help me?
I have problem about the BLU/BLK from rear valve timing pressure switch.(CEL52)

I don't understand about two different way of wiring that I attach.

The two pictures is wiring 2P connector to ground by BLU/BLK and manual page 6-17 say that the BLU/BLK connect to F4 and ground.
but
The last picture is wiring BLU/BLK from C122 to F4 directly (not connect to body ground)

I have no idea to wire it.
Could you help me..Plase..

Thank you.

 

[mrsarit]

Can I wire like this?
Thank you.

 

[Briank]

I see you found some issues in the manual. Wiring like your drawing does not make sense.

One wire of the 2P connector is connected to ground and the other to F4.

 

[mrsarit]

Hi Briank,sorry for bother you again.:smile:
last time,I known that the one terminal form valve timing pressure switch to F4 (BLU/BLK) and another to ground (GRE/WHT).

but I don't understand why page 6-17 of manual tell that "check for continuity between BLU/BLK terminal and body ground if it not connect==> Repair BLU/BLK and bodyground."
Because I have know idea that...
1)if I wire BLU/BLK to F4 how can it connect to ground
2)Why in the first and second picture draw like BLU/BLK connect to body ground.

Thank you so much for your kindness.
Sarit

 

[mrsarit]

Is it differrent bdtween body ground and signal ground?

 

[Briank]

We have been over this 6 different ways.

OK, here is the deal, one wire of the p2 connector should be connected to ground (ground is ground) and the other wire should be connected to F4.

P2

>---------------------- (ground)

>-----------------------(F4)


For now don't worry about the wire colors just confirm that these connections are right. I am concerned that you have damaged the F4 input on your ECU with all your messing around.

 

[mrsarit]

Dear BrianK,
I still need your help.
My mechanic have done everything that you tell me.(one of the p2 connector connected to ground and the other to F4/F2)

I still get code 52.
and I don't know what my mechanic do.....I get code 22!!! and my NSX limited @7000 RPM:frown: :frown: :frown:

I check continuity that..
- upper terminal of p2 connector (front and rear) connected to ground
- lower terminal (front) connected to F2 and to ground
- lower terminal (rear) connected to F4 but it is not connect to ground.

when I change ECU ; It is still the same.

Could you please help me again ?
I am so tired of my NSX because I alway fix it since I have It.(almost 2 year):frown: :frown:

however,Thank you so much.:smile: :smile: :smile:

 

[Briank]

OK, the front lower P2 connection should only connected to F2 you need to find out where it is connected (Shorted) to ground and correct it. I assume you checking with it unpluged?

 

[mrsarit]

Yes,I unpluged P2 for check continuity.(the ECU is pulged)

I line the front lower P2 connection to F2 directly (the new wiring) so I have know idea where it is shorted to ground.

Do you have any suggestion?

Thank you very much.

PS. I've seen from page 6-17 of manual and I understand that lower P2 connection should be connect to ground.

 

[mrsarit]

Thank Briank
8 weeks for this problem.
I can fix it already.
My problem is..
1.front pressure switch is bad.(code 22 )
2.F4 plug is loose. (code 52 )

My NSX is not limited @7000 RPM:
It can go to 8000 RPM and get Vtec @5800-6000 RPM.:biggrin: :biggrin: :biggrin:

:smile: :smile: :smile: Thank you so much Briank.:smile: :smile: :smile: