Request for help: diagramming a relay - Page 2 - Toyota Yaris Forums

CTScott · 07-12-2009, 09:31 AM

Hmmmmmm.

Try jumping ACC (white pin 2) to IG2 (pink pin 6) instead.

You will still need the ACC cut relay bypass (jumpering 3 to 4) in place, as the ACC cut relay is between the keyswitch and the radio.

BailOut · 07-12-2009, 12:34 PM

Quote:

Originally Posted by CTScott

Hmmmmmm.

Try jumping ACC (white pin 2) to IG2 (pink pin 6) instead.

You will still need the ACC cut relay bypass (jumpering 3 to 4) in place, as the ACC cut relay is between the keyswitch and the radio.

This was a difficult one to pull off due to the IG2 wire being a much smaller gauge than pins 1 and 2, but I got 'er done. Still no change.

The stereo and instrument panel still cut out during a start.

Thank again for feeding me ideas, though.

eTiMaGo · 07-12-2009, 10:12 AM

Would bypassing the whole ACC cut system be detrimental to the accessories/starter? I mean, there's a reason why this system exists, right?

If so, I'm not sure how you would wire this up exactly, but you could use the power from the START position to compensate for the "hole" of the ACC cut, only for the radio, if you know what I mean.

CTScott · 07-12-2009, 11:21 AM

Quote:

Originally Posted by eTiMaGo

Would bypassing the whole ACC cut system be detrimental to the accessories/starter? I mean, there's a reason why this system exists, right?

If so, I'm not sure how you would wire this up exactly, but you could use the power from the START position to compensate for the "hole" of the ACC cut, only for the radio, if you know what I mean.

His original intention was to just slip power in during the "cut". This is possible, but would require a relay and a diode. When researching the "cut" circuit I found that the sole purpose of the circuit is to keep things from flickering, as opposed to protecting the starter.

CTScott · 07-12-2009, 01:59 PM

Check the voltage on IG1 and IG2 to ground during starting. I am 99% sure that either or both of them remain hot during starting.

If that is the case, then tap from there directly to the radio's switched power input (Grey wire in pin 3 of the OEM harness).

07-12-2009, 10:12 AM	#3
eTiMaGo vroom vroom View User's Garage Drives: lil red 5-door Join Date: Sep 2006 Location: Bangkok, Thailand Posts: 7,744	Would bypassing the whole ACC cut system be detrimental to the accessories/starter? I mean, there's a reason why this system exists, right? If so, I'm not sure how you would wire this up exactly, but you could use the power from the START position to compensate for the "hole" of the ACC cut, only for the radio, if you know what I mean. __________________ The price of freedom of religion, or of speech, or of the press, is that we must put up with a good deal of rubbish. - Robert Jackson Bye bye 1NZ...

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07-12-2009, 09:31 AM	#1
CTScott ULTIMATE View User's Garage Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008 Location: USA, CT Posts: 13,460	Hmmmmmm. Try jumping ACC (white pin 2) to IG2 (pink pin 6) instead. You will still need the ACC cut relay bypass (jumpering 3 to 4) in place, as the ACC cut relay is between the keyswitch and the radio.

07-12-2009, 01:59 PM	#5
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 voltage on IG1 and IG2 to ground during starting. I am 99% sure that either or both of them remain hot during starting. If that is the case, then tap from there directly to the radio's switched power input (Grey wire in pin 3 of the OEM harness).