Return Of "the Cel"
02-Mar-2005, 01:50 PM
#22
you test the O2 by reading voltage output at startup COLD, then 1 minute after starting, 2 minutes after starting, and 10 minutes after starting. tell us what the voltages are from the O2. DO NOT check resistance with a regular multimeter, you'll cook your O2. there is a test for the heater element, but this one should tell us everything we need to know for now. I forget the heater circuit test at the moment, but is should be easy to find should we need it. I'm guessing the guy fuct the wiring cuz there is 2 white wires, he prolly crossed them by accident??
02-Mar-2005, 01:51 PM
#23
yeah it's possible, but I have never actually seen a failed ECU. they are not that complex, they are INSIDE the car, and there are no moving parts. so yeah... unlikely that it can fail, esp given that the circuits giving faults are circuits that were rewired. also, if the wires are crossed, and caused the ECU to fault, then why risk another good ECU?? finally, OBD2 cars have self-check programs for the ECU, so the ECU itself can tell you it's bad.
02-Mar-2005, 01:51 PM
#24
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Join Date: Jun 2003
Posts: 593
Originally posted by kwikb16a2
to rewire buy some wire and start cutting and soldering but the problem is that because the colours arent oem i dont know what wire is for what
to rewire buy some wire and start cutting and soldering but the problem is that because the colours arent oem i dont know what wire is for what
02-Mar-2005, 01:55 PM
#25
you could possibly do that... but it's more reliable if you can determine for certain using a multimeter, which of the wires belong to the heater circuit. problem is if you test the O2 signal wires, you've just destroyed the O2.
Scott, do you have an O2 tester?
Scott, do you have an O2 tester?
02-Mar-2005, 02:10 PM
#27
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Join Date: May 2003
Location: Milton, Ontario
Posts: 344
Originally posted by bbarbulo
Scott, do you have an O2 tester?
Scott, do you have an O2 tester?
There is also a main PGM fuse that powers the HTC circutry, but if it was blown you would also get other errors for purge valve, ECT, etc.
Sounds like a wiring issue, or possibly ECU....but i'd check the wiring out first.
02-Mar-2005, 03:05 PM
#28
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Join Date: May 2003
Posts: 3,745
Originally posted by bbarbulo
yeah it's possible, but I have never actually seen a failed ECU. they are not that complex, they are INSIDE the car, and there are no moving parts. so yeah... unlikely that it can fail, esp given that the circuits giving faults are circuits that were rewired. also, if the wires are crossed, and caused the ECU to fault, then why risk another good ECU?? finally, OBD2 cars have self-check programs for the ECU, so the ECU itself can tell you it's bad.
yeah it's possible, but I have never actually seen a failed ECU. they are not that complex, they are INSIDE the car, and there are no moving parts. so yeah... unlikely that it can fail, esp given that the circuits giving faults are circuits that were rewired. also, if the wires are crossed, and caused the ECU to fault, then why risk another good ECU?? finally, OBD2 cars have self-check programs for the ECU, so the ECU itself can tell you it's bad.
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