anyone know of a site that illustrates one of a crx hf wiring diagram? my friend has a 88 crx hf with a b16 and every time he puts it in reverse tthe car throws a cel. I read somewhere on here that you had to unplug the pin b-9 from the hf ecu wiring harness. We had it apart tonight and was checking out the pins. Theres a b16 computer in it and from three main hook ups on the box itself. I would guess that one of those is the older hf wiring harness but I cant exactly determine what wire it is. From what I also read the wire is supposed to be green and black. I found two green and black wires but from I heard someone else did the wiring and Im not sure if they matched the wires accordlily or not. Just a good illustration of the harness and how these are labeled would really help.

 

Here is the CRX manual. It's in a PDF file. This is the UK one but I use it all the time.

http://www.acute.f9.co.uk/crx/...s.htm

 

code 6 is coolant temperature sensor - the HF does have a green/black wire at ECU pin B9 for the back-up light switch, however, the PR3-PW0 ECU does not read anything from this pin - shouldn't have anything to do with the CEL - disconnecting B9 won't hurt anything, but won't get rid of the code 6 - you need to look to the Coolant Temperature Sensor on the head just below the distributor (has 2 wire connector) for the cause of the CEL

 

should one of those two wires on the sensor be unhooked??

 

sounds like he has his reverse lights and his coolant temp sensor backwords....