Faulty Signal or Signal Missing

Faulty signal or signal missing

Checking the signal cable
Inspect the immobilizer terminals visually.
Check the signal cable between engine control module (ECM) terminal #B22 (#B32) and immobilizer terminal #4 (#50). Check for an intermittent open-circuit. Check for a short-circuit to ground. Check for a short-circuit to supply voltage.
Remedy as necessary.
Then try to start the car.

Other information:
- to access or replace the immobilizer, see Replacing immobilizer control module Replacing Immobilizer Control Module
- To access or replace the engine control module (ECM), see Engine control module (ECM), replacing Service and Repair
- For information about engine control module (ECM) signals, see Signal specification Signal Specifications
- For information about immobilizer signal specifications, see Immobilizer signal specification Immobilizer Signal Specification
- Checking wiring and terminals Checking Wiring and Terminals.









Did the car start?

No - Checking components and programming

Yes - FAULT FOUND

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Checking components and programming
The engine control module (ECM) must be "blanked" in the original car so that it can then be programmed with the correct VIN code. Otherwise the engine control module (ECM) will not function.
Install the engine control module (ECM) in the original car and blank it. See VIDA vehicle communication.
Install the engine control module (ECM) in the car. Start the engine.
The immobilizer will transmit the VIN to the blanked engine control module (ECM). The engine control module (ECM) learns the VIN and will only function against the unique immobilizer.

Other information:
- to access or replace the immobilizer, see Replacing immobilizer control module Replacing Immobilizer Control Module
- To access or replace the engine control module (ECM), see Engine control module (ECM), replacing Service and Repair
- For information about engine control module (ECM) signals, see Signal specification Signal Specifications
- For information about immobilizer signal specifications, see Immobilizer signal specification Immobilizer Signal Specification.





Continue - FAULT FOUND

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