HB Common Door courtesy switch signal? - Toyota Yaris Forums

Yaross · 01-25-2011, 02:30 AM

Good day Sirs!

I am installing a car alarm on my Yaris 2006, 5 door (HB) and it requires a single (-) negative signal whenever a door is opened.

My problem is this, the rear door (hatch) and main cabin has separate lamps that work independently whenever the hatch or a door is opened. I need only one signal and I am afraid that that if join the signal from the rear hatch to he rest of the doors, I will lose the independent function.

I also noticed from the dashboard that if any door is opened, including the rear hatch, the red car icon (symbol for open door) lights up. This means it is receiving all the door courtesy switch signal. In case I want to use the signal from that, can somebody tell me where to find the line so I can tap the car alarm door switch wire on that.

Thank you all and I hope you can help me.

CTScott · 01-25-2011, 09:18 AM

There is not a single wire that you can tap. The cluster receives the separate signals and then drives a single icon (on the LB). To keep them separate, but bring a single wire into the alarm, you have to use diodes. You can use a general purpose diodes like 1n4001, 1n4003, or 1n4004. You install a diode between each of the door wires and the alarm wire with the white line on the diode pointing towards the alarm wire.

Yaross · 01-25-2011, 11:57 PM

Thank you very much Sir CTScott for the info and more specially for the specific diode number. I can now start splicing wires.

God bless you!

01-25-2011, 02:30 AM	#1
Yaross Drives: 2006 Yaris HB 5DR Join Date: Oct 2008 Location: Jubail, KSA Posts: 105	HB Common Door courtesy switch signal? Good day Sirs! I am installing a car alarm on my Yaris 2006, 5 door (HB) and it requires a single (-) negative signal whenever a door is opened. My problem is this, the rear door (hatch) and main cabin has separate lamps that work independently whenever the hatch or a door is opened. I need only one signal and I am afraid that that if join the signal from the rear hatch to he rest of the doors, I will lose the independent function. I also noticed from the dashboard that if any door is opened, including the rear hatch, the red car icon (symbol for open door) lights up. This means it is receiving all the door courtesy switch signal. In case I want to use the signal from that, can somebody tell me where to find the line so I can tap the car alarm door switch wire on that. Thank you all and I hope you can help me.

01-25-2011, 09:18 AM	#2
CTScott ULTIMATE View User's Garage Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008 Location: USA, CT Posts: 13,460	There is not a single wire that you can tap. The cluster receives the separate signals and then drives a single icon (on the LB). To keep them separate, but bring a single wire into the alarm, you have to use diodes. You can use a general purpose diodes like 1n4001, 1n4003, or 1n4004. You install a diode between each of the door wires and the alarm wire with the white line on the diode pointing towards the alarm wire. __________________

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Cruise control install 2009 Yaris 3 door	PeteZNY	DIY / Maintenance / Service	125	03-31-2024 09:22 AM
DIY - Headlights off with the Ignition Switch	CTScott	DIY / Maintenance / Service	46	11-03-2018 08:42 PM
Stock HU Remote Toggle Switch Wiring Question	marco_george	In Car Entertainment + Electronics (audio / video / alarm)	7	12-13-2010 09:20 PM
Help choosing sub	Duckywitbigfeetz	In Car Entertainment + Electronics (audio / video / alarm)	40	03-31-2010 12:06 PM
replacement fog light switch?	yrsdrgn	Cosmetic Modifications (Exterior/Interior)	4	07-17-2007 04:11 PM

01-25-2011, 11:57 PM	#3
Yaross Drives: 2006 Yaris HB 5DR Join Date: Oct 2008 Location: Jubail, KSA Posts: 105	Thank you very much Sir CTScott for the info and more specially for the specific diode number. I can now start splicing wires. God bless you!