Toyota Repair Problems? Ask a Mechanic for Answers ASAP
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Do you have a voltmeter and a reasonable knowledge of how to use it? do you have a scan tool or just a code reader?
ok i unplugged sensor messure resistiance between corrosponding wires and i get open curcuit.OL
12 volts and 3 volts or same as 12 volts in and out? Are you on the correct color wires?BLACK/WHITE and WHITE? Did you Ohm test the new sensor?
BLK/WHT 12volts WHITE 3volts koeo if you go to sensor wires that line up with BLK/WHT and WHT there is open.did you give me the right colars?
vin# XXXXX 08/03 prod date
The voltage should go to 1-2 volts for a minute or 2 thevoltage is duty cycled to ground by the computer. This can be monitored on ascope or voltmeter that does percentages or duty cycle abilities. After aminute or 2 the voltage will slowly work its way up to about 10 volts. 13 voltsmeans the is no more duty cycle or on time being done by the computer. Thesensor heater is fine. I have seen a few computers get damaged when the sensorheater fails but this normally keeps the computer from turning the heater on atall. Yours is turning on initially but is not maintaining it. The only optionis that there is a loose pin fit at the computer or the sensor or the wirebetween the 2 there is no other connector involved. Ohm test the B/R from thesensor to the computer connector pin for as seen below. IF the pin fits aretight and the wire is good the issue is in the computer.