Internal Fault

Internal fault

IMM-112 Control module

Checking keys
Try to start the car with all the keys that the customer has.





Does the car start with all the keys the customer has?

Yes - Fault-tracing information

No - Programming keys

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Fault-tracing information
The fault depends on the temporary disruption of the internal control module communication.

Continue - FAULT FOUND

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Programming keys




- Ignition on.
- Erase diagnostic trouble code (DTC).
- Program the key or keys which cannot be used to start the car according to Add/delete key Add/Delete Key.
Try to start the car with the programmed key/s.





Does the car start?

Yes - Fault-tracing information

No - Reading off diagnostic trouble codes (DTCs)

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Fault-tracing information
The fault was caused by faulty data in the control module memory.

Continue - FAULT FOUND

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Reading off diagnostic trouble codes (DTCs)




- Turn ignition off and on again.
Read DTCs.





Has diagnostic trouble code (DTC) IMM-112 been stored again?

Yes - Replacing component

No - FAULT FOUND

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Replacing component
Try a new control module according to Replacing immobilizer control module Replacing Immobilizer Control Module.
Initialize the control module according to Initiate the immobilizer control module. Initiate the Immobilizer Control Module.

Continue - Verification

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Verification




Verification

Hint: After finishing the repair check that the repair is successful and that the fault is corrected as follows.




- Ignition on.
Erase diagnostic trouble codes (DTCs).






Continue - Verification (continued)

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Verification (continued)
- Switch off ignition for more than three seconds.
- Start car.
Read DTCs.





Has the diagnostic trouble code (DTC) recurred?

Yes - VERIFICATION FAILED

No - VERIFIED

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VERIFIED - FAULT FOUND

VERIFICATION FAILED - Fault-tracing information

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Fault-tracing information




Information

Fault-tracing information
The fault should have been detected and remedied. As this is not the case fault-tracing has failed.
Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Do you want to exit fault-tracing?

Yes - Exit fault-tracing

No - Attempt New Test

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Attempt New Test - Checking keys

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