Another MkIII No start

[jetjock]

It couldn't be his switch electrically because he had power to the coil packs and that's the same feed as IGSW. As for the key I didn't mean to be pinpont because I obviously can't be 100 sure but it's a common problem among Toyotas. Several here, including myself, have suffered from it.

 

[ifyouaint1sturlast]

It couldn't be his switch electrically because he had power to the coil packs and that's the same feed as IGSW. As for the key I didn't mean to be pinpont because I obviously can't be 100 sure but it's a common problem among Toyotas. Several here, including myself, have suffered from it.

Oh I see, I guess I didn't see the part about the coil packs having power. I guess this is another experience versus understanding thing.

Personally, I am having a problem where my ST1 signal is weak intermittently (tested) and causing my starter relay to remain open. I was going to see what I could do as far as a rebuild of the cylinder but with my new found knowledge I may be taking other approaches..

Thanks

 

[jetjock]

It's understanding more than experience. Understanding the schematic that is.

Voltage drop testing while the ST1 circuit is loaded will accurately identify where your problem is. Not sure I follow about rebuilding the cylinder as it applies only to locking. Not an electrical part.

 

[Nick M]

http://www.cygnusx1.net/Supra/Library/TEWD/MK3/manual.aspx?S=Main&P=040

http://www.cygnusx1.net/Supra/Library/TEWD/MK3/manual.aspx?S=Main&P=46

 

[ifyouaint1sturlast]

It's understanding more than experience. Understanding the schematic that is.

Voltage drop testing while the ST1 circuit is loaded will accurately identify where your problem is. Not sure I follow about rebuilding the cylinder as it applies only to locking. Not an electrical part.

I just meant that I didn't think the obvious answer was the key, unless you've been there before..

I've tested the circuit and found the drop to be occurring at the cylinder. Wiggle the key a bit and get different readings. When I said rebuild it I just meant maybe opening it up if possible, I haven' touched it yet..