Yaris not starting after major engine repair - Toyota Yaris Forums

SWL · 05-11-2011, 09:21 AM

My daughter drove her 2007 Yaris hot (three times) and warped the head - Being an old shade tree mechanic I thought I would save her some money and do the job myself. I tore it down had the head resurfaced and reworked and put it all back together carefully, following the online yaris service manual step by step - Now I cannot get any fire to the ignition - It does NOT have the engine immobilzation system ( it was an option in 2007 in US) - I have checked the sensors (Crankcase, camshaft positioning sensors) and they fall within specs - I asked a local mechanic and he thought that my ECU needed reprogramming by the dealer - Is this possible? I can find no mention of it in the service manual online. What else could keep me from getting fire to the plugs? I checked the ECU fuses - all ok - checked the harness - all ok - the car was running (badly) when it tore it down - I'm at my wit's end. Any advice would be appreciated.

JumpmanYaris · 05-11-2011, 10:55 AM

Are you getting electricity ?

CTScott · 05-11-2011, 10:56 AM

The ECU definitely doesn't need reprogramming. Do you have an OBDII code reader that you can plug in to make sure that the ECM is actually alive?

Betrivent · 05-11-2011, 12:23 PM

Might be silly but.. is the battery still alive?

SWL · 05-12-2011, 10:07 AM

Thanks for the posts! I do have a reader and the ECU is alive - I am getting electricity to the places I am supposed to .... except the plugs - It spins like a tops but never hits - I took out the plugs and followed the service manual procedure for testing for fire to the plugs - no spark - these are new irridium plugs ($8 each!) I have gone so far as to take a volt/ohm meter and check the ecu and harness to make sure that the pins that go to the various parts of the ignition system are alive and they are.... I guess I am going to have to have it towed to a dealer. Thanks for the input!

CTScott · 05-12-2011, 10:13 AM

Check the AM2 fuse in the under hood fuse panel.

MickZEL · 05-12-2011, 10:52 AM

You can check out more gasoline pump

Hershey · 05-12-2011, 01:17 PM

Hmmmmmmmm .Timing off ?

Flipper_1938 · 05-12-2011, 04:03 PM

How is the ignition triggered in our motors?

Could the cams be 180* out of phase with the crank/ignition?

p123456789 · 05-14-2011, 03:32 AM

scan for codes and go from there.

05-11-2011, 09:21 AM	#1
SWL Drives: 2007 Yaris S Join Date: May 2011 Location: Morris, Alabama Posts: 2	Yaris not starting after major engine repair My daughter drove her 2007 Yaris hot (three times) and warped the head - Being an old shade tree mechanic I thought I would save her some money and do the job myself. I tore it down had the head resurfaced and reworked and put it all back together carefully, following the online yaris service manual step by step - Now I cannot get any fire to the ignition - It does NOT have the engine immobilzation system ( it was an option in 2007 in US) - I have checked the sensors (Crankcase, camshaft positioning sensors) and they fall within specs - I asked a local mechanic and he thought that my ECU needed reprogramming by the dealer - Is this possible? I can find no mention of it in the service manual online. What else could keep me from getting fire to the plugs? I checked the ECU fuses - all ok - checked the harness - all ok - the car was running (badly) when it tore it down - I'm at my wit's end. Any advice would be appreciated.

05-11-2011, 10:56 AM	#3
CTScott ULTIMATE View User's Garage Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008 Location: USA, CT Posts: 13,460	The ECU definitely doesn't need reprogramming. Do you have an OBDII code reader that you can plug in to make sure that the ECM is actually alive? __________________

05-12-2011, 10:07 AM	#5
SWL Drives: 2007 Yaris S Join Date: May 2011 Location: Morris, Alabama Posts: 2	yes to all Thanks for the posts! I do have a reader and the ECU is alive - I am getting electricity to the places I am supposed to .... except the plugs - It spins like a tops but never hits - I took out the plugs and followed the service manual procedure for testing for fire to the plugs - no spark - these are new irridium plugs ($8 each!) I have gone so far as to take a volt/ohm meter and check the ecu and harness to make sure that the pins that go to the various parts of the ignition system are alive and they are.... I guess I am going to have to have it towed to a dealer. Thanks for the input!

05-12-2011, 10:13 AM	#6
CTScott ULTIMATE View User's Garage Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008 Location: USA, CT Posts: 13,460	Check the AM2 fuse in the under hood fuse panel. __________________

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05-11-2011, 12:23 PM	#4
Betrivent Not quite a noob Drives: e46 325 Join Date: Jul 2009 Location: edmonton Posts: 1,408	Might be silly but.. is the battery still alive?

05-12-2011, 10:52 AM	#7
MickZEL Drives: Yaris sedan Join Date: Apr 2011 Location: Russia,Moscow Posts: 246	You can check out more gasoline pump

05-12-2011, 01:17 PM	#8
Hershey Drives: 08 Yaris sedan auto / Fit auto Join Date: Oct 2009 Location: northeast Posts: 2,897	Hmmmmmmmm .Timing off ?

05-12-2011, 04:03 PM	#9
Flipper_1938 Drives: 2010 Yaris Sedan Join Date: Oct 2010 Location: Kentucky Posts: 529	How is the ignition triggered in our motors? Could the cams be 180* out of phase with the crank/ignition?

05-14-2011, 03:32 AM	#10
p123456789 Drives: 07 lb jeep tj Join Date: Oct 2010 Location: dirty south Posts: 126	scan for codes and go from there.