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Questions tagged [immobilizer]

A vehicle anti-theft system that inhibits engine run unless certain requirements are met before a start attempt. The most common is an RFID chip in the ignition key.

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7 votes
4 answers

2006 Honda Civic EX - Green Key Light on dash

Problem: I try to start my car with the original factory key, as well tried with the other factory key (both have chips in them) and the car will start, run for a second then shut off. All the while ...
Kairan's user avatar
  • 173
5 votes
1 answer

OBD II Scanner refuses to communicate with the vehicle!

All the fuses check out All the relays check out Could I have a faulty ignition switch? Or an open somewhere? How do I go about troubleshooting this? It cycles through all the protocols, finds ...
ElectronicsNewbie's user avatar
2 votes
5 answers

How to program a transponder key of a 2000 Toyota Sienna

This is a follow-up question to my previous question regarding the replacement of the ignition switch cylinder in my car. In my 2000 Sienna there is an immobilizer circuit embedded in the switch. I ...
ysap's user avatar
  • 473
6 votes
2 answers

How does a cobra alarm system disable starting

I have a 1998 Mazda 626 with a cobra Auto security system. I suspect some problems I have been having are related to this system and was wondering exactly how it disables starting. Specifically one ...
Robert S. Barnes's user avatar
5 votes
3 answers

What does it take to program a used ECU?

I own a Mazda MPV 2000 with a faulty ECU. The vehicle has an immobilizer. It will not start with the former ECU. It floods the engine with fuel. After extensive diagnostics on the vehicle and the ...
ElectronicsNewbie's user avatar
4 votes
3 answers

Replacing the ignition switch tumbler (cylinder)

Recently we started having problems turning my 2000 Sienna's key in the switch past the OFF position. I have to wiggle the wheel for some time and play with the key, until it "catches" the right ...
ysap's user avatar
  • 473
4 votes
1 answer

Current from key to solenoid of starter motor relay

I am considering installing a starter motor immobilizing relay inline with the starter setting of the key and starter solenoid. I recently got a MAH-112-C-4 online. It has a 30A switching ...
SeanJ's user avatar
  • 533
0 votes
0 answers

How to/difficulty of transferring immobiliser related wires in an ignition switch harness?

Was replacing ignition switch and realised it had an immobiliser related wire on it which needed to be transferred over. I have no real knowledge of electronics. How does one go about moving these ...
James Wilson's user avatar
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