| Do not carry out the checks with the customer's SIM card. Carry out the test using a dedicated SIM card that is proved to have been working on other vehiclesCheck the intensity of the range received reading the number of bars on the displayCheck the electrical connection of the GSM aerial leadGSM aerial check See Test 5580PK GSM ANTENNA OPERATION CHECK | Move on to Step 1 | - Poor reception in the area through lack of radio signal cover
- GSM aerial lead connection at Connect defective
- GSM aerial defective
| - Move to an area covered by the radio signal
- Renew the connection See E3570 INTEGRATED RADIO PHONE
- Replace the GSM aerial Op. 5570T61 MULTI-FUNCTION AERIAL - R R
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| Check that the speaker connections are correctly connectedIf the customer complains of no or poor audio quality, check:That the microphone for the hands-free function is working properlyCheck that there are no microphone vibrations | End of diagnosis | - Speaker connections broken
- microphone not correctly installed
| - Restore continuity
- Install the microphone correctly
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