No Communication

No communication

IMM-234 Transponder communication

Checking keys





Note! Check to see if there are several keys (with transponders) on the same key ring. These keys should be separate so that they do not touch the key being used.

Try to start the car with all the customer's keys.
One of the following 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 the key code

3 - Checking for a short-circuit to supply voltage

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Erasing diagnostic trouble codes (DTCs)

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




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





Continue - FAULT FOUND

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Checking the key code




- Ignition on.
Check that the key code is stored.





Displays KOD LAGRAD = JA?

Yes - Checking the key code, continued

No - Program the key

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Checking the key code, continued
Replace the key.

Continue - Checking the key code

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





Continue - Verification

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Program the key
Program each key according to Add/delete key Adding/Erasing Keys.

Continue - Verification

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Verification




Verification





Hint: Check that the repair has been verified and that the fault has been remedied 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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