Low voltage to O2 Sensor
05-30-15, 07:03 PM
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Fuse Location for A/F sensor
My 1997 ES300 threw a 0135 code (open heater circuit) so I changed out the A/F sensor and it still throws a 0135.
I am now chasing the wiring back to see if there are any opens in the heater circuit. I have a few questions.
Is there a fuse for the sensor heaters?..... Read some posts that say to check fuse.
Where is connector plug on the PCM?...... I want to read ohms from the PCM plug to the sensor.
Is there a relay that gets a signal from the PCM?..... If so where is it?
I am now chasing the wiring back to see if there are any opens in the heater circuit. I have a few questions.
Is there a fuse for the sensor heaters?..... Read some posts that say to check fuse.
Where is connector plug on the PCM?...... I want to read ohms from the PCM plug to the sensor.
Is there a relay that gets a signal from the PCM?..... If so where is it?
Last edited by Chuckinnj; 06-19-15 at 07:18 PM.
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1evacruz
ES - 1st to 4th Gen (1990-2006)
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04-24-16 01:59 PM