In Reply to: Some CPS info - long, Ari [Profile/Gallery] , Sat, 4 Dec 2010 14:22:13

Hello there!

I too have No Start Issues after spending months doing upgrades to my 1993.5 9000 Aero and, as much as I found Ari's diagnostics to be informative, I unfortunately discovered via Ohm Tracing from the Cranshaft Position Sensor (CPS)that the PINS that correspond to the Red, Red/Green and Black wire from the CPS don't Ohm out to PINS 6, 23 & 15 in the ECU Harness. After finding the SAAB Service Manual that corroborated what Ari wrote pertaining to the above, specifically SAAB 9000 to 1995 W/TCS and LH Timing referencing 345 as being the CPS feeding to the above mentioned PINS on the ECU, I and my buddies at the SAAB Shop thought hey this Ari does know what he's referring to, HOWEVER, after ohming out to each of the 3 Pins above from the respective terminations for the wires of the CPS at the Clip, we found there to be NO Signal or an otherwise Open Connection. So no wonder the car won't get Spark, right? Not so fast!

So I unwrapped the entire Loom from the Harness as well as the length from the loom winding behind the Clutch/Brake Reservior in which the wires from the CPS reside and ohm tested to determine the red and black wires and to double check the only other Red/Green wire and then marked them and followed them up to the Harness for the ECU only to find that the CPS R,R/G & Blk wires connect to PINS 64, 40, & 62 repectively and when I ohm'd out to each I got a signal, and still no Spark!!

I haven't attempted as yet to put the other diagnostics to the test but will do so and hopefully source where the problem resides, but I'm close to throwing in the towel and having my rig towed to the Specialists as I'm tapped out with trying to figure this quandry out???

posted by 24.5.195...

• Some CPS info - long, Ari , Sat, 4 Dec 2010 14:22:131
  • Re: Some CPS info - long, Rociero , Tue, 31 May 2016 23:46:08
  • Re: Some CPS info - long, SAAB Snob, Sun, 16 Oct 2011 08:51:49 <-- Viewing This Message
  • Re: Some CPS info - long, Bob Kennett, Tue, 1 Mar 2011 14:05:11
  • Re: Some CPS info - long, Winston, Tue, 7 Dec 2010 19:04:43
    • Winston, you been drinkin' shine again?, Ken Fisher, Tue, 7 Dec 2010 21:21:39
  • Caution on the bounce test!, David Ingram, Sun, 5 Dec 2010 11:33:13
  • CPS for '94 and up, Paul Broeckx, Sun, 5 Dec 2010 06:21:16
    • Trionic 'trivia, derf, Sun, 5 Dec 2010 09:43:49
    • Trionic = ECU, kinda, Ari , Sun, 5 Dec 2010 06:50:27
  • nice work, Ken Fisher, Sat, 4 Dec 2010 17:41:48

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