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02 Sensor Test..

mindflux
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mindflux Mentor

mindflux

Posted
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Hey,

I just did my 02 Sensor Test, This is how i did it..

Set my ECU into test mode

warmed the car for about 5 mins (till it dropped to 800rpm)

then i held my foot on the accelerate till 2 grans

held it there for 10 seconds

then released.

in this time the ecu light flashed about 5 - 7 times in about 10 seconds (not accutarly)

But then it was kinda flashing all over the place, like after that it went off for abotu 10 seconds then stayd on for about 20 an yeah im nto sure what all this means.

I heard if it flashes between 5 - 10 in 1- seconds, this is normal

yet ive heard if the light stays on its running lean

but if it stays off its running rich.

In my case it did both of this :S

Anyone able to help me understand?

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paulr33 Grand Master

paulr33

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Posted

the only way to test if the 02 sensor is dead that i know of is to remove it (its on the exhaust manifold) and shake it. if it rattles its dead. its only supposed to last 40,000ks. if its dead youll have terrible fuel economy. its been done in the maitenance section probably 10 times in the last month, check out the thread "o2 sensor".

i had bad fuel economy and ive done 40,000 ks since ive had my car and its never been changed so i took the plunge and changed it ($117 part) and my fuel economy increased by about 100ks on a full tank

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paulr33 Grand Master

paulr33

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Posted

no problems. ive never done ecu diag so not sure what its like but it sounds very confusing thats for sure. theres a guy who made a consult hack up to an lcd display which shows all the stock ecu sensors for about $300 which could be handy, its in the for sale section. it shows the o2 sensor

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Penfold Rising Star

Penfold

Posted
Posted

Can't recommend the NissDatascan enough. Installed one on my GTR Friday ( by installed I mean I plugged it into the consult port) & works very well.

Displays 8 engine parameters on the screen out of

- RPM

- AFM voltage (2 for my GTR)

- Speed [miles/kph]

- Injector Pulse Width

- Injector Duty Cycle (%)

- Water/Coolant Temp Sensor (°C & F)

- Ignition timing

- Throttle Position (voltage & %)

- 02 sensor (voltage, + lean/rich)

- AAC Valve position (%)

- Battery Voltage

- Flags (a/c compresser on?, Power steering pump on?, Neutral Gear Selected?, Closed TPS)

- More Flags (A/C Relay on?, Fuel Pump on?, VCT Solenoid on?, Termo fans on?)

- More Flags (P/reg on?, Wastegate valve on?, IACV-FICD on ?, Egr on?

Hence you can diagnose most problems straight away. Saves dropping into mechanic & having them tinker around & recommend replacement parts.

I'll take a few photos tomorrow & do up a review when I get hold of a laptop to test the logging.

Otherwise just by one from the wreckers if your pretty sure its broken - there not that expensive.

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mindflux Mentor

mindflux

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  • Author
Posted
Can't recommend the NissDatascan enough.  Installed one on my GTR Friday ( by installed I mean I plugged it into the consult port) & works very well.

Displays 8 engine parameters on the screen out of  

- RPM    

- AFM voltage (2 for my GTR)

-  Speed [miles/kph]

- Injector Pulse Width

- Injector Duty Cycle (%)

- Water/Coolant Temp Sensor (°C & F)

- Ignition timing

- Throttle Position (voltage & %)

- 02 sensor (voltage, + lean/rich)

- AAC Valve position (%)

- Battery Voltage

- Flags (a/c compresser on?, Power steering pump on?, Neutral Gear Selected?, Closed TPS)

- More Flags (A/C Relay on?, Fuel Pump on?, VCT Solenoid on?, Termo fans on?)

- More Flags (P/reg on?, Wastegate valve on?, IACV-FICD on ?, Egr on?

Hence you can diagnose most problems straight away.  Saves dropping into mechanic & having them tinker around & recommend replacement parts.

I'll take a few photos tomorrow & do up a review when I get hold of a laptop to test the logging.

Otherwise just by one from the wreckers if your pretty sure its broken - there not that expensive.

Sounds good to me..

Something is suss when it comes to my ECU.

I have an RSM which reads my information incorrectly.

I also have a type one timer which also reads my revs/speed incorrectly.

I dont know if the timer if piggy backing off the rsm wires or what?

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mindflux Mentor

mindflux

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Ok, I dont know where its connected to on the ECU

but this is what my translation says

red - battery positive

blue/brown - ign 1

green - ignition

black - earth

brown - revs

I didnt install it and thats the translation someone did for me

although looking at it now, it doesnt seem to soudn right

like its missing some wires or something

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https://www.sau.com.au/forums/topic/44392-02-sensor-test/#findComment-910210
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yogi000 Mentor

yogi000

Posted
Posted

I got the english manual here, i also got mine from japan too and the diagram of the ecu in the manual is wrong or it could be havent calibrated the revs and speed yet.

Red - 12 volt constant

Green - 12 Volt Ignition

Blue - 12 vold accessory

Gray - Handnbrake

Brown - RPM

Blue - Speed

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