Which is switched power pin on ECU? - Saab 9000 Bulletin Board - Saabnet.com
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I've been trying to figure out where to check for +12v switched power on the ECU and am finding conflicting information.
According to the Ari no-start checklist, this is fed from fuse #13. However, the 1997 wiring diagram doesn't even show fuse 13 in the section concerning the ECU ("Engine Performance Circuits.")
The quasimotors pinout shows pin 21 as +12v switched, but the 1997 diagram shows that pin as not being used. To add to the confusion, the Haynes manual has ECU pin 18 tagged as switched power. (On the 1997 diagram this goes to the ignition.) It looks like over the years the power feed pins were not kept consistent on the different ECUs.
So - anyone know for sure which pin or wire to check for the ECU's 12v feed on my '95 CSE? I figure if I can do some voltage checks that may help poinpoint the problem that is shutting down the ECU.
Posts in this Thread:
- Will '97 ECU work (for test) in '95 CSE?, JerseySaab , Mon, 22 Jun 2015 08:40:32
- Which is switched power pin on ECU?, JerseySaab , Mon, 22 Jun 2015 17:11:59 <-- Viewing This Message
- Re: Pin 60 is +15 (switched 12v)..., Street, Tue, 23 Jun 2015 07:30:17
- Test results: +11.5V at pin 60, JerseySaab , Wed, 24 Jun 2015 06:44:00
- The problem is NOT the ignition switch!, JerseySaab , Tue, 23 Jun 2015 08:41:32
- Re: Spare ECU, call mike straub, mgwAZ , Tue, 23 Jun 2015 16:44:23
- Re: Oops typo! It's green/white alright..., Street, Tue, 23 Jun 2015 10:11:32
- Thanks!, JerseySaab , Tue, 23 Jun 2015 10:32:50
- I think it will work, will set CE light., RayF, Mon, 22 Jun 2015 11:41:42
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