dog179 Posted April 28, 2009 Report Share Posted April 28, 2009 ok ill start with a bit of history, its a ae 92 seca sx 4age .its got fuel power at coil but no power at dissy no spark at plugs .after any idea,s on what could be wrong .thanks in advance.rick Quote Link to comment Share on other sites More sharing options...
beerhead Posted April 28, 2009 Report Share Posted April 28, 2009 It could be the igniter module. Quote Link to comment Share on other sites More sharing options...
dog179 Posted April 28, 2009 Author Report Share Posted April 28, 2009 It could be the igniter module. [/q i have power at 2 wires at the igniter but nothing on the other 3 wires? Quote Link to comment Share on other sites More sharing options...
Medicine_Man Posted April 28, 2009 Report Share Posted April 28, 2009 More likely the dizzy signal, its what ground out the ignitor to make it fire.. Quote Link to comment Share on other sites More sharing options...
dog179 Posted April 28, 2009 Author Report Share Posted April 28, 2009 More likely the dizzy signal, its what ground out the ignitor to make it fire.. how do i check and repair this ? Quote Link to comment Share on other sites More sharing options...
Medicine_Man Posted April 28, 2009 Report Share Posted April 28, 2009 continuity between the wires coming from the dizzy to the ecu.. Quote Link to comment Share on other sites More sharing options...
dog179 Posted April 28, 2009 Author Report Share Posted April 28, 2009 continuity between the wires coming from the dizzy to the ecu.. i don't want to seem like a numb nut but I'm not used to working on late model gear whats the best way to check for this Quote Link to comment Share on other sites More sharing options...
Medicine_Man Posted April 28, 2009 Report Share Posted April 28, 2009 multimeter and some long wires.. Quote Link to comment Share on other sites More sharing options...
dog179 Posted April 28, 2009 Author Report Share Posted April 28, 2009 multimeter and some long wires.. ok will check this tomorrow sorry to be a pain but was told ecu was behind left hand kick panel but i pulled the kick panel off this afternoon and could not see it. Quote Link to comment Share on other sites More sharing options...
Medicine_Man Posted April 28, 2009 Report Share Posted April 28, 2009 AE92 corolla it is in behind the centre console just above the tunnel.. Quote Link to comment Share on other sites More sharing options...
beerhead Posted April 28, 2009 Report Share Posted April 28, 2009 Much easier to just put a test light on an injector plug to test if the ecu is getting a signal. Flashing light = injectors pulsing and the ecu is getting a signal. Quote Link to comment Share on other sites More sharing options...
Kebin[RL] Posted April 29, 2009 Report Share Posted April 29, 2009 Much easier to just put a test light on an injector plug to test if the ecu is getting a signal. Flashing light = injectors pulsing and the ecu is getting a signal. MAke sure you use an LED test light if your doing that. A normal filament globe type of test light can draw too much current and destroy your ecu. Quote Link to comment Share on other sites More sharing options...
beerhead Posted April 30, 2009 Report Share Posted April 30, 2009 I think you've been misinformed, there is no way a bulb will damage an ecu.  A typical injector will draw between 1 and 4 amps depending on the engine load  Power = Current x voltage  So that's 12 to 48 watts of power consumption for each injector.  A typical indicator bulb is rated at 5 W, so a little tiny test light bulb is going to draw under 0.5 amp. Quote Link to comment Share on other sites More sharing options...
Hiro Protagonist Posted April 30, 2009 Report Share Posted April 30, 2009 I think you've been misinformed, there is no way a bulb will damage an ecu. A typical injector will draw between 1 and 4 amps depending on the engine load  Power = Current x voltage  So that's 12 to 48 watts of power consumption for each injector.  A typical indicator bulb is rated at 5 W, so a little tiny test light bulb is going to draw under 0.5 amp.  Incandescent filaments draw much more on power-up than steady-state, because the filament is cold (and has less resistance, which means more current) Quote Link to comment Share on other sites More sharing options...
ajay Posted April 30, 2009 Report Share Posted April 30, 2009 could be the lead from the coil to the dizzy Quote Link to comment Share on other sites More sharing options...
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