01 CBR600F4i 02 sensor help. Pleasssse
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Member
Joined: Apr 2023
Posts: 39
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From: Merced ca
That was actually super informative. I appreciate that. I’m going to do that tonight. Now my question is I know that 02
sensor is 4
wires. What two wires need the resistor. You mentioned the two heating wires those would be the ones ?
sensor is 4
wires. What two wires need the resistor. You mentioned the two heating wires those would be the ones ?
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Joined: May 2011
Posts: 1,988
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From: Mesa, AZ
Yes, the ECU detects heater-circuit current-flow to verify O2-sensor is present and working. Diagram should show 4 wires leaving O2-sensor. One pair of wires should be connected to a resistor inside sensor. That's heater and you should trace wires from that back to ECU.
One wire should be ground and one should be power. Which are shared with other sensors. Don't get distracted and follow branch to other devices, stay on course back to ECU with tracing.
Also wires can cross over each other but not touch. Like overpasses on maps. Real junctions that connect have solid circular dot.
Take photo of your diagram tracing and post it here. Will be good for future searches. thx
One wire should be ground and one should be power. Which are shared with other sensors. Don't get distracted and follow branch to other devices, stay on course back to ECU with tracing.
Also wires can cross over each other but not touch. Like overpasses on maps. Real junctions that connect have solid circular dot.
Take photo of your diagram tracing and post it here. Will be good for future searches. thx
Last edited by dannoxyz; Apr 11, 2023 at 11:10 PM.
Thread Starter
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Member
Joined: Apr 2023
Posts: 39
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From: Merced ca
Haven't looked at diagram, so can't say exactly. Don't try to figure out ENTIRE wiring diagram, just O2-sensor. Like looking at road-map, you don't need to digest every single road on map. Just look at where you are and trace path to where to want to go. So process goes something like this:
1. print out wiring-diagram full-size on sheet of paper
2. pull out highlighting markers
3. find O2-sensor
4. locate 4 wires coming out of sensor
5. identify 2 wires for sensor heater, it should have symbol similar to resistor
6. using highlighter (different colour for each wire), trace 2 heater wires back to ECU connector
7. connect proper value resistor to those pins on ECU connector to simulate O2-sensor
Here's one where I helped someone track down wiring for horn. Turned out wire was disconnected
1. print out wiring-diagram full-size on sheet of paper
2. pull out highlighting markers
3. find O2-sensor
4. locate 4 wires coming out of sensor
5. identify 2 wires for sensor heater, it should have symbol similar to resistor
6. using highlighter (different colour for each wire), trace 2 heater wires back to ECU connector
7. connect proper value resistor to those pins on ECU connector to simulate O2-sensor
Here's one where I helped someone track down wiring for horn. Turned out wire was disconnected
Thread Starter
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Member
Joined: Apr 2023
Posts: 39
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From: Merced ca
Ok so I believe if im correct. And read this correct only two wires go to ecm and direct to it. Other two branch off into the fuel pump relay and something else. So pin 5 on the left side. Black connector and pin 4 right side gray connector. And looking at my ecm tonight both pins on each side is missing. They’re nothing there. So I believe my theory was correct this was swapped with a California ecm and my bike never came with 02
sensor. So if can back up my hunch on these pins I’ll pin it together with wire and a resistor
sensor. So if can back up my hunch on these pins I’ll pin it together with wire and a resistor
Senior Member
Joined: May 2011
Posts: 1,988
Likes: 439
From: Mesa, AZ
Not sure of those pins. That diagram is horrible! Download this manual here on your laptop and print out diagram on sheet of paper. There's absolutely zero way to trace wiring accurately on phone screen, unless you're able to draw on diagram, but that one is way, way too messy.
It's like what they say in maths class, "show your work". Let's see your "map", that is, the path you took from O2-sensor towards ECU connector. Let's be absolutely 100% positively sure about these pins, or else you're gonna fry ECU!!
https://www.carlsalter.com/download.asp?p=1968
https://web.archive.org/web/20190614.../f4imanual.zip
https://www.manualslib.com/manual/12...0f4i-2001.html
It's like what they say in maths class, "show your work". Let's see your "map", that is, the path you took from O2-sensor towards ECU connector. Let's be absolutely 100% positively sure about these pins, or else you're gonna fry ECU!!
https://www.carlsalter.com/download.asp?p=1968
https://web.archive.org/web/20190614.../f4imanual.zip
https://www.manualslib.com/manual/12...0f4i-2001.html
Last edited by dannoxyz; Apr 14, 2023 at 02:42 AM.
