3 Coolant Temperature Sensors?
#1
3 Coolant Temperature Sensors?
92 SC400, w/ 1UZ-FE.
It seems I have 3 coolant temperature sensors (see pics). From other posts, #1 was identified as the Engine Coolant Temperature (ECT) sensor. This is the one that sends signal to ECU, right? I changed #1 with a new one after the old one broke in half when removing the electrical connector. What about 2 & 3? What are they for?
CRuby
It seems I have 3 coolant temperature sensors (see pics). From other posts, #1 was identified as the Engine Coolant Temperature (ECT) sensor. This is the one that sends signal to ECU, right? I changed #1 with a new one after the old one broke in half when removing the electrical connector. What about 2 & 3? What are they for?
CRuby
#4
I found this pic of a 95 SC400 & it doesn't even have the #2 coolant sensor.
I'll be leaving it as is for now, but I'd like to know it's use, without chasing the wires. More out of curiosity, since I have bigger issues; ECU hiccups, leaking doors, and replacing my instrument cluster. Sorry, just venting. I've found many of the postings that address these problems & I'm grateful for them. But if you know the use for this #2 sensor, please reply.
I'll be leaving it as is for now, but I'd like to know it's use, without chasing the wires. More out of curiosity, since I have bigger issues; ECU hiccups, leaking doors, and replacing my instrument cluster. Sorry, just venting. I've found many of the postings that address these problems & I'm grateful for them. But if you know the use for this #2 sensor, please reply.
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