Chesmari Posted June 1 Report Share Posted June 1 Hello Everybody, First time using a Link. I'm reaching out to see if anyone can help me sort this out. 60-2 Trigger Wheel w/ Honda Reluctor Hall Effect Cam sensor Toyota Yaris COP Honda TPS GM IAT GM ECT 750cc High Impedance Injectors Volvo IAC Valve AEM Wideband Bosch 044 Fuel Pump Electric Radiator fan Everything has been checked, tested and calibrated. Turned the engine and no spark. What am I missing? Any comments, solutions and assistance is truly appreciated. Ryan Trigger Scope - 2024-05-31 8;09;20 pm.llgx Toyota Corolla 2T-GTEU.pclx Quote Link to comment Share on other sites More sharing options...
Adamw Posted June 1 Report Share Posted June 1 Ok, two initial problems: The trigger scope shows no signal at all on trig 1, but looking at the AN Volt 1 voltage I suspect that is probably just because you have clicked the capture button before cranking rather than during cranking, so try that again, make sure you only click capture when the engine is turning. The cam sensor is showing 2.2V in the scope, it should be either close to either 0V or 3.7V, so 2.2V suggests the sensor is pinned wrong. What is the cam sensor off? Quote Link to comment Share on other sites More sharing options...
Chesmari Posted June 1 Author Report Share Posted June 1 Copy that. The cam sensor is from a Jeep. Ryan Quote Link to comment Share on other sites More sharing options...
Chesmari Posted June 1 Author Report Share Posted June 1 I'll sort out the pin out for the cam sync. Thank you so much. Ryan Trigger Scope - 2024-06-1 8;59;28 am.llgx Quote Link to comment Share on other sites More sharing options...
Chesmari Posted June 1 Author Report Share Posted June 1 (edited) I re-pinned the cam sync, no spark. Kindly advise. Ryan Trigger Scope - 2024-06-1 2;30;56 pm.llgx Edited June 1 by Chesmari Updated information. Quote Link to comment Share on other sites More sharing options...
Adamw Posted June 2 Report Share Posted June 2 The crank sensor is wired wrong polarity, swap the +/- wires at the sensor plug. There is still an issue with the cam sensor - in the 8:59 trigger scope the cam sensor voltage is still 2.2V so I assume that was before you changed the cam sensor wiring. In the 2:30 scope the cam sensor voltage sits at 0.2V the whole time but also the crank sensor waveform looks a bit messed up so I think the pinout is still wrong. The pic below seems to match the FSM we have, is this how yours is wired? Quote Link to comment Share on other sites More sharing options...
Chesmari Posted June 4 Author Report Share Posted June 4 Thank you so much Adam. Re-pinned according to your instructions, initially the ground and output were in the wrong order. BTW with this cam sync sensor, is it falling or rising? Ryan Trigger Scope - 2024-06-3 5;37;05 pm.llgx Quote Link to comment Share on other sites More sharing options...
Adamw Posted June 4 Report Share Posted June 4 Ok, your crank signal now looks good and your voltage on trig 2 is more like what I expect - but the cam sensor is still not showing any "tooth". Is your "chopper disc" steel/magnetic? According to the note on the drawing above you should have a low voltage when there is no metal in front of the sensor and a high voltage when there is metal in front of the sensor (this actually opposite of how most similar sensors work so it might be wrong). But to help diagnose, you can use the trigger scope just like a voltmeter without the engine turning. If you pull your cam sensor off (but leave it plugged in) then do a scope capture you should see either ~3.5V or ~0V on trig 2 in the scope. Then if you place a piece of metal in between the magnet and sensor then do another scope capture you should see the opposite high/low voltage. Quote Link to comment Share on other sites More sharing options...
Chesmari Posted June 7 Author Report Share Posted June 7 I think I sorted it out. I wasn't getting +5V. I originally had the +5V on AN V4 but it was off, I didn't realize it until after I teed out of the +5V that was going to the TPS. Ryan Trigger Scope - 2024-06-7 3;16;21 pm.llgx Quote Link to comment Share on other sites More sharing options...
Chesmari Posted July 4 Author Report Share Posted July 4 Still no spark. I modified a map for a 3SGE. What am I missing? Ryan Toyota Corolla 2T-GTEU.pclx Trigger Scope - 2024-07-3 9;44;05 pm.llgx Quote Link to comment Share on other sites More sharing options...
Adamw Posted July 4 Report Share Posted July 4 You've got some noise on trigger 1 in places that crosses the threshold and zero so generates "teeth" that shouldn't be there. This noise was less apparent in your earlier scopes. The noise gets worse in patches where the cranking RPM dips the most (compression stroke). From this observation I would lean towards something like a bad ground or possibly something like the starter motor brushes arcing or similar. Your scope suggests it is only cranking at 70-120RPM, whereas 200-250RPM would be more typical so I would start by investigating why that cranking speed is so low. Batt voltage, starter wiring, poor ground, worn starter etc. TTP 1 Quote Link to comment Share on other sites More sharing options...
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