Coolant Sensor ( ETC ) Voltage Reading
#1
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Okay trying to solve my no start issue.
My coolant sensor did not have any resistance when I tested it on the car and then the plastic connector on the sensor just broke off. The pins were all corroded. I am thinking that it was dead. I am picking up a new one later today.
While I was in there I turned the car to the ON position and tested the signal from the ECU on the connector. I got some interesting readings. First off was the power line showed me 9.02v I thought this was supposed to be 12V.
The other issue was that when I swapped the probes it showed me -9.02 volts. I thought it would show 0.00 since the power probe was on the negative line.
Third, without the coolant sensor working on startup does it go into a "fuel dump" mode? You can clearly smell the fuel after trying to crank and crank.
Thanks for the input.
My coolant sensor did not have any resistance when I tested it on the car and then the plastic connector on the sensor just broke off. The pins were all corroded. I am thinking that it was dead. I am picking up a new one later today.
While I was in there I turned the car to the ON position and tested the signal from the ECU on the connector. I got some interesting readings. First off was the power line showed me 9.02v I thought this was supposed to be 12V.
The other issue was that when I swapped the probes it showed me -9.02 volts. I thought it would show 0.00 since the power probe was on the negative line.
Third, without the coolant sensor working on startup does it go into a "fuel dump" mode? You can clearly smell the fuel after trying to crank and crank.
Thanks for the input.
#3
Lexus Champion
iTrader: (13)
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Hm maybe these coolant sensor links can help a bit:
https://www.clublexus.com/forums/per...?highlight=diy
https://www.clublexus.com/forums/per...placement.html
https://www.clublexus.com/forums/per...?highlight=diy
https://www.clublexus.com/forums/per...placement.html
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tenchu
LS - 1st and 2nd Gen (1990-2000)
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07-05-11 05:03 PM