Volvo RWD 200 Forum

INDEX FOR 1/2026(CURRENT) INDEX FOR 12/2003 200 INDEX

[<<]  [>>]


 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

question on how ECT sends info to ECU 200

posted by  jkordzi on  Thu Jul 3 02:56 CST 2003
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Wed Sep 12 02:43 CST 2001
[RELATED]

I've been trying to track down a hot restart/running problem and was studying the wiring from the ECT to the ECU. The ECT has only two leads - one to the ignition computer and the other to the ECU, both of which use the engine coolant temperature in their algorithms. It grounds through the sender. I thought that the ECU sends the ECT about 5 volts and then interprets what it gets back as a temperature (due to the change in resistance in response to the coolant temperature). How does it do that through one wire? Do I have this wrong?






THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD

New question on how ECT sends info to ECU [200]
posted by  jkordzi  on Thu Jul 3 02:56 CST 2003 >


<< < > >>



©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.