When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
My S2 starts spluttering when warmed up. I'd like to check the Temperature sensor but Craig's Garage confuses me. It says measure at "DME computer electrical connector". My understanding is this is the footwell connector. I see also in posts about measuring at the connector interface on the front bulkhead. Which is correct please? I thought I'd measure by disconnecting at the sensor. Thank you
My S2 starts spluttering when warmed up. I'd like to check the Temperature sensor but Craig's Garage confuses me. It says measure at "DME computer electrical connector". My understanding is this is the footwell connector. I see also in posts about measuring at the connector interface on the front bulkhead. Which is correct please? I thought I'd measure by disconnecting at the sensor. Thank you
First step is to measure at sensor. Measuring at the DME plug verifies the continuity and the resistance that the DME circuit senses including the wiring. So if the wiring was failing or had a short, the signal from the DME coolant temperature sensor would be erroneous.
First step is to measure at sensor. Measuring at the DME plug verifies the continuity and the resistance that the DME circuit senses including the wiring. So if the wiring was failing or had a short, the signal from the DME coolant temperature sensor would be erroneous.
So I'm getting 0 ohms at the sensor with plug removed (I'm measuring at the sensor at the front of the block with the blue connector) It's like open circuit. To the extent that I'm disbelieving my measurement. Not even a micro ohm! So if I replace is it at the footwell or at the bulkhead I measure terminal 13?
Last edited by Corvalliscraig; 10-08-2023 at 02:26 PM.
I would begin by replacing the temp sensor, which at zero ohms does not sound healthy. You can check it at the sensor, and / or between pin 45 on the DME connector and ground (or pin 24 on the connector)
.
Hi All. Temperature sensor on order. Not sure where to test it yet. Where Clark meant it to be tested in footwell or at plug on firewall beside fuse box.
Check the new sensor on the sensor itself; the numbers should look like what @KevinGross posted.
For the measurements at the DME connector it's a little bit more involved, but the same idea. For the DME connector test, unhook the battery then remove the DME connector. Figure out which pin is #45 on your car, and stick one of your multimeter leads down there. It's a little spring clip and you should be able to make contact easily with the pin of the lead. The other lead can go to any suitable ground point you find down in the footwell. Provided that your wiring is in good shape, you should see the same numbers as above.
10-08-2023, 12:08 PM
DME Block Temperature Sensor
