Question about 1998 Mazda 626
The transponder not sending information to the brain box
Posted by Anonymous on
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Posted on Jan 02, 2017
that is bollox,the dealer has 30 mins to recalibrate the system or it will shut down and need all he said,is he for real a mazda dealer.........or are you rich looking????? get it to another dealer,ask them to get 2 keys and recalibrate(assuming the first dealer has not caused a meltdown of the system.....)the problem you may have is they may not know about the 30 min rule...its to stop thieves from changing keys on stolen cars.......
Posted on Jun 02, 2010
DESCRIPTION & OPERATION Immobilizer system consist of an ignition key (transponder equipped), coil (part of ignition lock cylinder), immobilizer unit, Powertrain Control Module (PCM), SECURITY light, and related wiring and fuses.
This system requires a key that has been programed into PCM and immobilizer unit to operate vehicle. When a key is used that has not been programed into PCM and immobilizer unit, the first 3 times the PCM will carry out fuel cut-off and ignition cut-off operations and engine will stop in a few seconds. The 4th time or after, engine cannot be started.
SECURITY light will illuminate for 1-2 seconds under normal operation. SECURITY light will flash when key ID does not match stored ID and SECURITY light will stay on when code word of immobilizer unit does not match stored code word.
Anti-theft Code 1602 refers to a miscommunication or no communication between the immobilizer system components, if vehicle starts, it means it is an intermittent problem. Most problems in electronic control system result from faulty wiring or poor electrical connections. To avoid unnecessary component testing, perform a visual inspection first.
Posted on Oct 12, 2010
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You have an electronic immobilizer key recognition problem. Your key chip is not recognized by the transponder antenna fitted on the ignition switch barrel. Do you have this warning symbol lightning on the dashboard?
This warning lamp indicates that the engine is locked by the immobilizer system, and the engine start sequence must be repeat again.
From year 1995 in Audi-VW (VAG) cars is used engine immobilizer. The VAG group immobilizer system consists of an immobilizer ECU which controls the recognition of keys and the Engine Management ECU system. Immobilizer is activated when the ignition key is removed and, together with the engine control unit, largely prevents unauthorized starting of the engine. The system uses a transmitter and receiver unit in the ignition key (transponder). Whenever an attempt is made to start the engine, it transmits a new code to the car's electronics. The immobilizing is only cancelled and car motor electronic receives permission to start engine if the key sends a right authorization code.
Use another ignition key that you have, and start the engine.
You will need to programm all ignition keys using suitable diagnostic equipment (VAS, VAG-Com) connected to the data link connector of the car.
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