no check engine light not cranking

1999 TOYOTA COROLLA
180 MILES
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POBUBBA
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replaced ecm, identical numbers, replaced crankshaft position sensor, no check engine light coming on at ignition on position, unable to link obd scanner so no codes, constantly says link error, no spark or fuel, efi fuse/relay checked, only have power to one of the terminals on both efi relay and efi fuse, from reading somewhere else on this forum i should have power to 2 on relay and fuse terminals Merlin 2021 was the expert but i am unable to get a hold of him-anyone else know the solution, i believe in merlin2021 post he had the solution to the wiring issue-please help
Jun 18, 2012 at 6:35 PM
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DOCFIXIT
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At data link connector check for voltage on Black wire pin #12 key on

When you turn the key to the on position without cranking the engine over can you hear the fuel pump run in the tank for 5 seconds?

this guide will help

https://www.2carpros.com/articles/car-cranks-but-wont-start


Please run down this guide and report back.
Jun 18, 2012 at 6:59 PM
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POBUBBA
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hi, just looked, only black and white- brown- white top row, red on bottom row- no power from any with key in on position, i just checked and got power to two of the efi relay terminals with relay removedm also rewd wire in obd connector gains power when efi relay is removed?
Jun 18, 2012 at 7:18 PM
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DOCFIXIT
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Check fuse Ignition switch in underdash box 7.5 amp
Jun 18, 2012 at 7:33 PM
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POBUBBA
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Docfixit, checked that fuse, its ok, all fuses in vehicle under dash checked out and all working
Jun 18, 2012 at 8:00 PM
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ASEMASTER6371
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used or new computer??

if used, will not work as it has to be flashed to your vin.

if new, did you have it flashed??

can you get any info with a code reader??

Roy
Jun 18, 2012 at 11:19 PM
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KHLOW2008
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OBD-II terminal # 16 must be hot at all times.
Jun 19, 2012 at 3:29 PM
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POBUBBA
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hi KHLow2008, no pins are hot unless i remove efi relay
Jun 19, 2012 at 4:14 PM
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KHLOW2008
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That means you have a power supply failure to the pin.
Jun 19, 2012 at 6:11 PM
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POBUBBA
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how do i find out what pin #16 is, is there a diagram available or what colour would the feed cable to the terminal be
Jun 19, 2012 at 6:46 PM
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KHLOW2008
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At the narrower side of the connector, the end pin is # 16.
Jun 19, 2012 at 6:54 PM
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POBUBBA
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just tried something i found on another forum, i removed the 16 pin(middle) connector from ecm, cel light comes on and car starts right up, reconnect this plug and car stops and just cranks after that, got a few codes when connector was out but i have airbox removed P0110, P0105, P0115, P0120, with connector disconnected i still have no hot pins on obd11 connector
Jun 19, 2012 at 7:00 PM
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KHLOW2008
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You need to check the fuses and wiring to the pin.
Jun 19, 2012 at 7:15 PM
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JERICHO FOX
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I have the same problem also on my 2009 toyota corolla. no check engine light. after I clean the ECM board with contact cleaner.there is no mil light and obd link error.but if I put 12v supplied to blue wire on efi relay obd is working. but no codes appears.
Oct 19, 2016 at 10:16 AM
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JERICHO FOX
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can anyone give me the ecm ignition pin out for 2009 toyota corolla 1.8 G manual transmission. Thank you.
Oct 19, 2016 at 10:23 AM
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KASEKENNY
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I am attaching the pinout information for this vehicle. Unfortunately, they don't have a connector view, so we are left with this diagram view.

Please let us know what info you need.

Thanks
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Dec 6, 2021 at 5:31 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.