Hondata

Have not had a problem in the last 4 months and I get a cell last night for a primary o2 heater circuit, checked at the connector by the exhaust, everything looks good mechanically. I want to check the resistance and a voltage drop from the ecu to the connector @ o2. I need the ecu pin diagram and which of the four wires at the o2 sensor is the heater circuit feed. Im assuming its a 5voltage signal to heat the o2? thanks in advance.

The O2 heater is 12v. You could have either a bad ground, or the O2 sensor has just died.

do you know the pinout diagrams for the ecu side or at least the pin for the heater circuit, also the wire on the o2 would help. thanks

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