O2 Sensor Wiring Diagram

CAN ANYONE TELL ME WHERE I CAN FIND A WIRING DIAGRAM FOR A 90 ACCORD O2 SENSOR. MY ENGINE LIGHT IS ON AND I CHECKED THE CODE AND IT WAS A COLD 1, THAT WAS THE O2 SENSOR SO I REPLACED IT AND THE LIGHT IS STILL ON FOR THE SAME CODE, I NEED A DIAGRAM TO TRACE THE WIRE BACK TO THE COMPUTER, CAN ANYONE HELP?

THANX IN ADVANCE:smile:

Whose sensor did you use by brand and part no. Some aftermarket sensors are not wired correctly for the Honda. 4 colors are involved in the wiring. Yel/blk goes to the main relay and is the 12 volt source for the sensor heater. Grn/wht goes to MAP sensor,EGR lift sensor, Throttle angle sensor and the ECU as the Blu/wht. The Wht is a shielded wire and goes to the ECU as the O2 sensor output. The grn/blk is the ground side of the sensor heater and goes to the ECU. Honda has a troubleshooting procedure which should be used whenever you get a code and before replacing sensors. Using it can save you money.

I agree with mpumas: Hondas do not like aftermarket and your new sensor may not be accepted by ECU. But did you reset your code after new sensor installation?

For the manuals:

http://honda.lioness.googlepages.com/home

http://www.spoonhonda.com/Default.asp?Redirected=Y

I hope this helps,

Sam