No Temp/RPM reading after CA2SR swap. Tried everything.

ONLY for ADVANCED technical discussion about the 240sx!
Sstrappjr
Posts: 2
Joined: Wed Nov 20, 2013 12:08 am
Car: S13 Silvia.

Post

I have two problems after my doing my swap from a JDM CA to a PS13 Blacktop SR. I can't get readings from my temp nor my RPMS. So Let me break down each what I have tried so far an what I got.

Starting with temp.
First I checked the connection at the sensor with it looking good, then routed into the cabin to the ecu. It shows Blue/Black harness to Blue/Black interior plug. Then to my cluster. Good to go. I'm getting power checking with a multimeter. I grounded the gauge as well to check if the gauge is good. (it went max after grounding).
I tried straight wiring it from cluster to wire by ecu, eliminating the wiring behind the dash (still nothing).
I tired straight wiring it from the red wire at the temp sensor with still no luck.
All I can think of else to try is to buy a new sensor and replace it.

RPM situation.
I had to hook up the green/black wire from ecu splicing into the yellow/red so that I would have power to RPM.
I tried straight wiring that eliminating the dash wiring.
noticed there are two yellow/red by the ecu. One going into the ECU, the other going into the bay. I tried testing both separate and currently have them spliced together.
I'm getting volts.
What I did find out though is I stripped a portion of my harness in my bay right outside the firewall and going to the side harness that runs to my injectors, coils all that does not have a yellow/red going to however in my harness portion that runs to the body for igniter, maf, and body harness I found one yellow/red but its capped off and going to nothing.

I also have 4 different clusters I;m trying with. Using the SR cluster as primary but a CA, KA/SR and a digital to even test. All showing nothing. Everything worked before the swap.

Anyone have these problems before or know how to help. I'm running out of troubleshooting ideas. :ohno:
Much appreciated for any help.


Return to “240SX Technical Forum”