ECT testing, live, hot, 180F. as mentioned in post 2.
do not use ohms on any car, key on. (key off at 180f the sensor OHMS is 300 , unplugged) you risk blowing up ohms scales in meter.
key on, not running. (more easy)
ECT plugged in, the ECT page covers this , this is a retype.
backprobe the ECT, using DMM set to VOLTS. 20vdc range if fixed range meter.
the voltages shows.....
0.62v so my ect pages show..
what for volts. ? it is there. below covers all that, shows all ways possible to check ECT,
http://www.fixkick.com/ECU/temp-sensors.html
it's 0.65v (so yours is perfect),. keep in mind as Ive said, the sensors, can slam(fail) to and open state, then go normal with heat or vibration.
old ECTs can do wild crazy things,
that ive seen on many OBD scans (logs)
all tests valid... perfect.
the ecu has 2000 ohm(precision 1%?) pull up resistor to the +5vdc bus.
the math(ohms laws)
I = @ 2300 ohms is , 2.17mA , so V at ect is ,, E=I x R , 2.17ma times 300 = .65217v... easy peasy japaneezy
do not use ohms on any car, key on. (key off at 180f the sensor OHMS is 300 , unplugged) you risk blowing up ohms scales in meter.
key on, not running. (more easy)
ECT plugged in, the ECT page covers this , this is a retype.
backprobe the ECT, using DMM set to VOLTS. 20vdc range if fixed range meter.
the voltages shows.....
0.62v so my ect pages show..
what for volts. ? it is there. below covers all that, shows all ways possible to check ECT,
http://www.fixkick.com/ECU/temp-sensors.html
it's 0.65v (so yours is perfect),. keep in mind as Ive said, the sensors, can slam(fail) to and open state, then go normal with heat or vibration.
old ECTs can do wild crazy things,
that ive seen on many OBD scans (logs)
all tests valid... perfect.
the ecu has 2000 ohm(precision 1%?) pull up resistor to the +5vdc bus.
the math(ohms laws)
I = @ 2300 ohms is , 2.17mA , so V at ect is ,, E=I x R , 2.17ma times 300 = .65217v... easy peasy japaneezy
http://www.fixkick.com