background image

Automatic door-lock/unlock  

CX-9 /2007    Version 1.0 

Page 2 

 

hour, tested in 1 hour and installing into the car will take you 2 hours. However it could also take up to 
14 days, depending how much experience you have 

  

Ideally lock/unlock should happen when you switch from PARK to automated/manual gear, but that 
would mean a lot of work to take the dashboard out. Remember: one of the design principles was 
keeping it EASY. I decided that the parking-brake was a great way to activate door-lock/unlock 

Below is very detailed information, however if a less technical person wants to understand this: 

1.

 

You start the car as normal 

2.

 

Release the parking-brake before you start driving as normal, HOWEVER as by a miracle the 
doors lock automatically 

 

3.

 

Drive as normal 

4.

 

Park the car as normal 

5.

 

Put the parking-brake on as normal, HOWEVER as by a miracle the doors now UNLOCK 
automatically  

 

6.

 

Switch of the engine. 

WOW

…. who would NOT understand and like that….. (No Emails with names please!) 

For the more technical & lucky people that will built and install; I wish you a TON of pleasure with the 
descriptions below. I tried to be complete and as helpful as possible. Take time to read the document 
maybe 2 times before you start. It can save you a lot of time. An in-house test is proposed. You do that 
BEFORE you install it in the car. I mention it here as many people believe you don’t have to read a 
manual before and find themselves in trouble later on.  

The building and install requires a basic knowledge of electronics and as well as standard set of the tools 
when dealing with basic electronics. If after reading below you find it too difficult or don’t have the 
tools, contact a friend or a friend of a friend to help out. 

Last but not least, if you decide to build and install, it is all at 

your own risk and cost

. I only share advice 

around I have done it, what worked for me and added information to try to help you. However any 
issues/damage or cost is at your own risk.  

I expect however you will be happy, so happy you want to donate money. Please do so, but not to me, 
but think about the people that are less fortunate in the world and support them. Remember that any 
Dollar or Euro (or whatever) counts for them.  Thank you and happy reading! 

Paul 

 

Содержание CX-9

Страница 1: ...d to find that there is NO automatic door lock I have searched Internet and many people had the same surprise It was confirmed by Mazda that the CX9 does not have automatic door lock either Time for a...

Страница 2: ...will built and install I wish you a TON of pleasure with the descriptions below I tried to be complete and as helpful as possible Take time to read the document maybe 2 times before you start It can...

Страница 3: ...spikes to the capacitor C3 Don t be a wise guy and a put a diode over the relay B and relay C the circuit will not work Pulse When contact C closes e g relay A is on because the parking brake is on r...

Страница 4: ...a door lock signal is sent to the contact D Contact D is in NO and the ground signal is sent directly to the car computer This indicates an unlock signal and the doors will unlock After 1 5 seconds th...

Страница 5: ...itor C1 will be discharged and relay C will activate Contact A is set to NO preventing a door lock signal to be sent to the contact D When relay A is dropping off it will activate relay B through cont...

Страница 6: ...once it is installed and wonder how you could have lived without it In case you want unlock sometimes but not all of the time you can consider an extra switch on the dashboard to allow unlock when yo...

Страница 7: ...ed With a little bit of patience and good looking checking it was an easy job in 1 hour and performed the in house test chapter 5 I used a battery charger for the 12V I have drilled a hole in the plas...

Страница 8: ...ted to the MIN o Take the Red wire from the 12V and hold to MIN to discharge Capacitors C1 o Locate Relay C and make sure you can see it well o Reconnect Red wire to 12V and watch relay C It should ac...

Страница 9: ...o times the capacitor C2 1000uF this should not be a problem but if you have old capacitors they tend to dry out and lose their power o Make sure black wire is connected to MIN o Make sure the white w...

Страница 10: ...precaution See Appendix C a Disconnection with clear radio channels and seat memory Remove the panels See Appendix C Appendix C shows the Body Control Module BCM It is located at the front behind the...

Страница 11: ...ated so far If that did happen however go to chapter 9 diagnose step 1 B Press and release the parking brake off to remove the parking brake The doors should lock If that does not happen go to chapter...

Страница 12: ...dashboard You will find a good place high up under the dashboard Also use tire wraps tie wire to make sure that the wires are secured and not in the way Replace the panels Appendix D Last but not lea...

Страница 13: ...e than half the value of C2 this is unusual action to take as the change is less than 0 001 that this is the cause but you never know Step 2 The doors won t lock or unlock 1 If you don t hear a clicki...

Страница 14: ...w lock you have reversed the resistor R2 connection on the relay we are only human o Don t hold the UNLOCK door switch pressed at the same time as pressing and releasing the parking brake It would har...

Страница 15: ...Power on off Reset Relay A Relay B Relay C Contact B Contact A Contact C Contact D NO NO NO NO C3 100uF 25V D2 1N4001 The circuit has 3 major parts build around 3 separate relays 1 Activator Triggere...

Страница 16: ...s good as well e g 6V 30V A 12V DPDT Relay Double Pole Double Throw relay B 12V SPDT Relay Single Pole Double Throw relay C 12V SPDT Relay Single Pole Double Throw relay Wire 0 75 mm2 18 Gauge Availab...

Страница 17: ...Automatic door lock unlock CX 9 2007 Version 1 0 Page 17 Appendix C Remove panels and dis connect battery...

Страница 18: ...CX 9 2007 Version 1 0 Page 18 BCM Reconnect the battery a Verify that all connections are secure b Turn the ignition switch to RUN position c Reconnect the negative battery cable d Turn the ignition...

Страница 19: ...Automatic door lock unlock CX 9 2007 Version 1 0 Page 19 Appendix D Re installing panels...

Отзывы: