No Communication

No communication

IMM-234 Transponder communication

Checking keys





Note! Check if there are several keys with transponders on the same key ring. The keys should hang free so that they do not affect the key being used.

Try to start the car with all the customer's keys.
One of the following alternatives can occur:
- 1 : The engine starts with all keys.
- 2 :: The engine starts with at least one of the keys.
- 3 : The engine does not start.

Select one of the following options to continue.

1 - Erasing diagnostic trouble codes (DTCs)

2 - Checking key code

3 - Checking for a short-circuit to supply voltage

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Erasing diagnostic trouble codes (DTCs)

Hint: The fault was due to a temporary fault in the antenna circuit or temporary interference in the communication between transponder and control module.




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





Continue - FAULT FOUND

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Checking key code




- Ignition on.
Read off key code if stored.





Displays CODE STORED = YES?

Yes - Checking key code, continued

No - Program the key

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Checking key code, continued
Replace key.

Continue - Checking key code

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Checking for a short-circuit to supply voltage
Check cable between control module terminal #10 and antenna ring terminal #4 for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.





Select Continue when the fault has been remedied.

Continue - Verification

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Program the key
Program each key according to Add/delete key Add/Delete Key.

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.

Does the car start with all keys ?

Yes - VERIFIED

No - VERIFICATION FAILED

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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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