o2 sensor wiring question
12-08-2007, 09:07 AM
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o2 sensor wiring question
i have a 93dx hatch with a ls motor (b18b1), the swap was done before i purchased the car.
my question is, the guy who did the swap totally hacked the wiring harness apart, i now have to wire the o2 sensor directly to the ecu. now ive found the pinouts i just need to know were the grounds on the o2 sensors get wired to.
my question is, the guy who did the swap totally hacked the wiring harness apart, i now have to wire the o2 sensor directly to the ecu. now ive found the pinouts i just need to know were the grounds on the o2 sensors get wired to.
12-08-2007, 10:41 AM
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Re: o2 sensor wiring question (ArsonistsMind)
the ground for the o2 sensor goes to the grounding block up at the driverside shock tower....the yellow/black stripe wires....if i remember correctly, i don't have my helms in front of me
12-10-2007, 07:26 AM
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<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by chad »</TD></TR><TR><TD CLASS="quote">the ground for the o2 sensor goes to the grounding block up at the driverside shock tower....the yellow/black stripe wires....if i remember correctly, i don't have my helms in front of me</TD></TR></TABLE>
that's not ground... that's ignition power.
(12V with ignition in Run)
OP: run two wires to the ECU (O2 signal and heater signal), one wire to the thermostat ground (other side of O2 signal) the other wire goes to ignition power (other side of heater)
in the case of a common O2 (doesn't matter which black wire)
black - ECU heater signal
black - ignition power
white - ECU O2 signal
green - thermostat ground
that's not ground... that's ignition power.
(12V with ignition in Run)OP: run two wires to the ECU (O2 signal and heater signal), one wire to the thermostat ground (other side of O2 signal) the other wire goes to ignition power (other side of heater)
in the case of a common O2 (doesn't matter which black wire)
black - ECU heater signal
black - ignition power
white - ECU O2 signal
green - thermostat ground
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