Subject	Don't think it's PTU
Posted by	Auggie on May 30, 2015 at 3:48 PM
	This message has been viewed 309 times.
In Reply To	Could be PTU? posted by Auggie on May 30, 2015 at 01:23 PM
Message	That diagram is SO confusing, but I think I figured it out. "Terminal (1)" corresponds to E1 through E6 on the PTU and are the "external" (output) pins that go straight to the coils; "terminal (2)" corresponds to I1 through I6 on the PTU and are the "input" pins that come from the ECU; and "terminal (3)" is the one G (ground) pin on the PTU. I1 is electrically connect only to E1, I2 only to E3, and so forth. Whenever any terminal is being tested against "terminal (3)" simply test every single pin to G. If "terminal (1)" is being tested against "terminal (2)" then only test against matched pairs, e.g. I1 only to E1, I2 only to E3, etc., but check all matched pairs. With this new methodology, I redid all the tests on my PTU and it passed. So now I'm stuck still trying to figure out what's wrong and will continue testing the wiring to/from the PTU, and eventually the CAS.
Follow Ups	Car won't start after replacing injectors - Auggie 14:15:17 05/29/15 Won't crank, or cranks but won't fire up? (n/m) - FrozTTy 15:24:44 05/29/15 Re: Won't crank, or cranks but won't fire up? - Auggie 15:30:18 05/29/15 You could always check each plug individually. Remove the - YlwPrlZTT 16:08:12 05/29/15 Will do that with the coils! - Auggie 17:23:01 05/29/15 you don't have to mess with the fuel line to get the balance - YlwPrlZTT 19:57:01 05/29/15 Make sure fuel lines aren't crossed... - ttz'in (norcal) 20:13:03 05/29/15 Matched photos with other cars - Auggie 08:05:39 05/30/15 No Spark - Auggie 10:16:11 05/30/15 Also, ~1.2-1.5 Ohms - Auggie 10:48:24 05/30/15 Actually, twas 0.9 Ohms - Auggie 12:43:49 05/30/15 And Ignition Coil Relay good - Auggie 11:13:32 05/30/15 Could be PTU? - Auggie 13:23:37 05/30/15 Do you still have the PTU subharness installed? - YlwPrlZTT 14:06:01 05/30/15 Yes, but harness very pliable relative to all else - Auggie 14:17:27 05/30/15 Ok, I would still delete that subharness to be sure. It's - YlwPrlZTT 14:39:11 05/30/15 I agree with all - Auggie 14:47:06 05/30/15 Check all the PTU connections that it calls for. - YlwPrlZTT 15:04:04 05/30/15 I actually just deleted my subharness as well, once I get - YlwPrlZTT 15:05:47 05/30/15 With an older EFI harness, and in the PTU area - ttz'in (norcal) 15:15:32 05/30/15 Don't think it's PTU - Auggie 15:48:14 05/30/15 Re: Car won't start after replacing injectors - Placuch 16:03:46 05/30/15 Re: Re: Car won't start after replacing injectors (n/m) - Auggie 16:22:53 05/30/15 My GAWD - Auggie 16:27:06 05/30/15 fixed! connector corrision with sub-harness! - Auggie 17:08:51 05/30/15 Glad you got it running again. That sub-harness is nothing - YlwPrlZTT 17:16:41 05/30/15 Agree with sub-harness PITA! - Auggie 17:44:57 05/30/15 I would avoid Wiring Specialties - flashstar 13:50:48 05/31/15 ^ Agree ^ Well done ! (n/m) - ttz'in (norcal) 14:50:11 05/31/15
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