here is all I found in search, I posted it for the M70 and M30 engine

Do you have a Bentley repair Manual for the E32?
That is all mentioned there how to test them. But without a proper testing device it is difficult, just a multimeter/DMM is not showing all what you want.


Download this:

Online TIS

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BMW of North America, LLC
Repair Information


Repair Information
Nominal Values, Specifications and Tightening Torques
320i Repair Manual No. 2
528i ... 530 Repair Manual No. 1
524td ... 535i Repair Manual No. 4
630 ... 633CSi Repair Manual
733i Repair Manual No. 2
8 Series - E31 Repair Manual No. 4

Automobiles (Since 1985 Models) Manual No. 14
3 Series E30 Repair Manual No. 7
5 Series E34 Repair Manual No. 8
6 Series (From 1986 Models Onwards) Repair Manual No. 2
733i-735i Repair Manual No. 3
7 Series - E32 Repair Manual No. 6

TARGET='_blank'>http://www.bmwtechinfo.com/repair/main/index.htm

http://www.bimmerboard.com/forums/posts/520046/

E32 750iL 11/88, E32 750iL Highline 03/90
7 series Tech tips
http://tinyurl.com/3486c

• Need Help! No start on engine! - johnlee 2008-05-03 00:31:27 (91 views)
  • Re: Need Help! No start on engine! - johnlee 2008-05-03 00:47:45 (79 views)
    • what engine, model year, details..... - shogun 2008-05-03 01:03:24 (62 views)
      • Re: what engine, model year, details..... - johnlee 2008-05-03 01:27:59 (68 views)
        • 740iL 1992 (url) - shogun 2008-05-03 01:47:45 (106 views)
          • Ok, I pulled the fuel pump out today to teset with 9v battery - johnlee 2008-05-04 00:36:13 (90 views)
            • Looks like you fuel pump is too weak (url) - shogun 2008-05-04 11:26:08 (76 views)
              • OK..I bought a new pump today and got it installed..but still..no start from the - johnlee 2008-05-04 20:56:50 (71 views)
                • the fuel filters have an arrow for the flow direction - shogun 2008-05-05 04:17:40 (65 views)
                  • I did the DME reset..still no luck with engine to turn over..let me replace the - johnlee 2008-05-05 19:09:20 (62 views)
                    • Condition UPDATED! - johnlee 2008-05-05 23:00:42 (64 views)
                • I am actually in the position like this post!.. - johnlee 2008-05-04 23:26:02 (63 views)
          • Re: 740iL 1992 - johnlee 2008-05-03 02:00:08 (60 views)
            • Re: 740iL 1992 - apane 2008-05-05 15:25:46 (69 views)
              • let me replace the crank sensor to see if it turn over..thanks (nt) - johnlee 2008-05-05 19:07:55 (58 views)
                • Re: let me replace the crank sensor to see if it turn over..thanks - apane 2008-05-05 20:38:17 (55 views)
                  • UPDATED! - johnlee 2008-05-06 01:01:13 (55 views)
                    • fuel pump relay bridging (anti theft device on?) - shogun 2008-05-06 11:26:08 (80 views)
                      • and is the OBC working? (url) - shogun 2008-05-06 11:28:41 (75 views)
                        • Re: and is the OBC working? - apane 2008-05-06 12:38:57 (60 views)
                          • Re: and is the OBC working? - apane 2008-05-06 12:45:12 (51 views)
                            • I will take a look at the fuse for anti theft device..my car got a stock alarm.. - johnlee 2008-05-06 19:25:59 (55 views)
                              • Any good place to purchase the Crank Position Sensor beside the dealer? - johnlee 2008-05-06 23:19:37 (50 views)
                                • E38 CPS does not work (url) - shogun 2008-05-07 19:29:07 (53 views)
                                • Re: Any good place to purchase the Crank Position Sensor beside the dealer? - apane 2008-05-07 11:03:00 (48 views)
                                  • Apane: I found your old post from last year..I think my car got the same problem - johnlee 2008-05-07 19:49:50 (51 views)
                                    • http://www.bimmerboard.com/forums/posts/363861 (nt) - johnlee 2008-05-07 19:50:07 (45 views)
                              • OK..I checked the Anit Theft Device fule (blue '15)..it's good..but I got a hard - johnlee 2008-05-06 20:03:37 (58 views)
                                • CPS testing (url) - shogun 2008-05-07 01:18:36 (103 views)
                                  • thanks Shogun! I just ordered a new CPS..I will update the condition as soon as - johnlee 2008-05-07 20:06:37 (44 views)
                                    • UPDATE! - johnlee 2008-05-14 22:40:08 (62 views)
                                      • Re: UPDATE! - apane 2008-05-19 13:19:19 (39 views)
                                        • still having the problem! - johnlee 2008-06-11 19:38:07 (37 views)