I tried shorting the 3 clock crystals on the board, but that didn't help. After that, I was still having write errors. I was on windows 7 so the first problem was to resolve a driver signing issue for DlportIO.dll and DlportIO.sys. It worked like a charm once some issues were sorted. If the security light does not stop blinking, that key is not programmed to the car. If you insert a VALET key, the security light will remain solid for 2 seconds and then go out. The first two keys are internally (inside the ECU) designated as MASTER keys and the 3rd key inserted will be internally designated as the VALET key.Īs a test, when you insert a MASTER key, the security light should stop blinking right away. Wait 30 seconds for the programming cycle and programming mode to close. The security light should extinguish and then commence to blink regularly.ĥ. After security light goes off remove third key from ignition. Insert third transponder key into ignition lock cylinder for registration DO NOT TURN ON. Security light should remain on indicating you're still in programming mode.Ĥ. After 3-5 seconds remove the second key from ignition. The Security light may blink indicating it has accepted the key. Insert the second transponder key into ignition lock cylinder for registration DO NOT TURN ON. Security light should remain on indicating you're still in programming mode.ģ. After 3-5 seconds remove the first key from the ignition.
Insert the first transponder key into ignition lock cylinder for registration DO NOT TURN ON. The security light should illuminate and remain on.Ģ. Briefly insert any key into ignition lock cylinder and remove immediately. When reconnected to the car, the ECU will be in auto-programming mode and will accept new keys as per the procedure below:ġ.
Here’s the setup, with the computer connected to the ECU via the EEPROM circuit on a prototype breadboard. If you do have problems reading and writing from the chip, you have to short the crystal on the board. However the clip doesn’t have a good grip on the SMD chip so I chose to solder wires directly to the leads of the chip. Using a test clip helped a lot during prototyping. Note: This is the same circuit for programming the odometer’s EEPROM: To connect the 8-pin EEPROM chip to the computer you'll either have to solder hook-up wires to the pins or get a Test Clip for onboard programming. The components required are fairly basic, three 4.7K ohm resistors, three 5V zener diodes, and a computer with a serial port.
In my case, I made my own, using this EEPROM circuit.
You can either buy a USB programmer from eBay or make your own to communicate to the serial port. This is where you need to get a programmer to connect the chip to your PC.
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