7mgte issues need help doing diag - Page 2

touge_monster86 · 03-09-2010, 06:50 PM

hooked up engine light got nothing . i also decided to test the injector resistor box on the passenger side and power at the ecu and its good . but i check for power at the afm and there was none and i am also wondering if there should be power going to the injectors with the key on the on position

would a faulty tps have anything to do with this ?

cre · 03-10-2010, 01:56 AM

No the TPS is only a trim sensor... the car can be driven without it, throttle response and idle just suck and it'll like to stall if the IDL switch is damage or the TPS is actually disconnected.

Yes, the injectors will have power with the ignition in the ON position... they won't have a ground as that's supplied by the ECU.

Engine light??? You replaced the check engine light or what? Pull the glove box out and test the ECU for +12v at Batt, B+ and B1+. I can't provide a pinout as you haven't filled out your profile or mentioned in this thread what year your car is... but those are the pins you need to check. Batt should always have power and +B and +B1 are both ignition switched.

03-09-2010, 06:50 PM	#1
touge_monster86 Stock Join Date: Mar 2010 Location: huntington beach Posts: 11	hooked up engine light got nothing . i also decided to test the injector resistor box on the passenger side and power at the ecu and its good . but i check for power at the afm and there was none and i am also wondering if there should be power going to the injectors with the key on the on position would a faulty tps have anything to do with this ? Last edited by touge_monster86; 03-09-2010 at 07:50 PM.

03-10-2010, 01:56 AM	#2
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	No the TPS is only a trim sensor... the car can be driven without it, throttle response and idle just suck and it'll like to stall if the IDL switch is damage or the TPS is actually disconnected. Yes, the injectors will have power with the ignition in the ON position... they won't have a ground as that's supplied by the ECU. Engine light??? You replaced the check engine light or what? Pull the glove box out and test the ECU for +12v at Batt, B+ and B1+. I can't provide a pinout as you haven't filled out your profile or mentioned in this thread what year your car is... but those are the pins you need to check. Batt should always have power and +B and +B1 are both ignition switched. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

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