N370 ECU specs and electronics help
03-12-03, 11:03 AM
#1
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N370 ECU specs and electronics help
I took my ecu out only to find that I have two burnt resistors in the board. Component #s 825 and 824. 824 Reads 1w, 3R9J, .95 . Its neighbors of the same value test at 4.4 ohms. The other, #825, reads the same except in the middle it reads 2R2J and its neighbors of the same value test at 2.6 or 2.7 ohms. I'm not sure as to what part of the car these components in the ECU affect. I'm thinkin maybe TPS or 02 sensor. Anyone have the detailed specs on the ECUs? And further more would a 1 watt, .95 volt, 4.4 ohm resistor work for the one and a 1 watt, .95 volt, 2.6 ohm resistor work for the other. Or am I reading these wrong? I need help please.
03-15-03, 01:04 PM
#3
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No, were gone for the weekend!
I know zip about N370's. Sounds like a series five turboii.
RXSTR used this site: http://www.autoecu.com/ and recommended it.
I'd say its probably related to your Switching and Relief signals. Go to your green tps check connector, and if your not getting the ground signal on the two sockets that are sitting side by side, then its something to do with that. It DOES not mean the tps signal is kaput. Just the drivers for the Relief and Switching solenoids and a couple of other things.
The above paragraph does not mean a thing you unless your familar with setting the tps using the two LED's to set the tps. I'll stop right there.
I know zip about N370's. Sounds like a series five turboii.
RXSTR used this site: http://www.autoecu.com/ and recommended it.
I'd say its probably related to your Switching and Relief signals. Go to your green tps check connector, and if your not getting the ground signal on the two sockets that are sitting side by side, then its something to do with that. It DOES not mean the tps signal is kaput. Just the drivers for the Relief and Switching solenoids and a couple of other things.
The above paragraph does not mean a thing you unless your familar with setting the tps using the two LED's to set the tps. I'll stop right there.
03-17-03, 05:06 PM
#4
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These resistors will for current limit control on outputs; both the TPS and O2 sensor are inputs so it's not related to them. My guess is that they're for two of the solenoids. I haven't had an N370 ECU apart (yet anyways) but in an N326 there are similar resistors on each of the solenoid outputs (EGR, Split air, PRCV, etc). The 3R9 indicates 3.9ohms, 2R2 is 2.2ohms - just replace with as close as you can get in a 1W size (keeping to 1W or larger will be more important than matching the exact value). Try to stay within 10% of the marked value.
Henrik
87TII
Henrik
87TII
