How to install aftermarket intrusion sensor in IS250?
07-02-09, 06:47 AM
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How to install aftermarket intrusion sensor in IS250?
On techdoc I found that scheme:
Question is about "intrusion sensor", that is located (in some IS editions) on overhead lamp unit. My edition does not have any intrusion sensor, but I have security system that alarms when I open the door with the metall key (not the buttons).
Is there any way to add aftermarket intrusion (shock or ultrasonic) sensor to the existing system? I've measured the voltage on the connectors of the J75 of the body ECU: between ISIF (IOUT) and body (ground) it is always 14 volts, between ISIF & S+B there 12 volts - always!
Grounding S+B when the car is secured - does nothing, no alarm sound.
So I have no idea how the intrusion sensor is powered and how it alarms to the security system.
Any ideas?
Question is about "intrusion sensor", that is located (in some IS editions) on overhead lamp unit. My edition does not have any intrusion sensor, but I have security system that alarms when I open the door with the metall key (not the buttons).
Is there any way to add aftermarket intrusion (shock or ultrasonic) sensor to the existing system? I've measured the voltage on the connectors of the J75 of the body ECU: between ISIF (IOUT) and body (ground) it is always 14 volts, between ISIF & S+B there 12 volts - always!
Grounding S+B when the car is secured - does nothing, no alarm sound.
So I have no idea how the intrusion sensor is powered and how it alarms to the security system.
Any ideas?
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Jonnybob
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04-28-15 12:38 AM
