Checking the SIM Card Reader

Checking the SIM card reader

Checking the component and wiring
If there is a open-circuit or short-circuit in the wiring, faulty SIM card reader or connector, the phone module (PHM) will not be able to communicate with the SIM card. The user will be asked to insert a SIM card even though there is already a card in the reader.

Checking the connectors, wiring and components
Try a different SIM card to check whether the problem is with that particular card.
Disconnect connector A at the phone module (PHM) and the connector for the SIM card reader. Check the wiring. Check for an open-circuit by taking readings between:
- control module connector A terminal #9 (#9) and SIM card reader connector terminal #1
- control module connector A terminal #8 (#8) and SIM card reader connector terminal #2
- control module connector A terminal #7 (#7) and SIM card reader connector terminal #3
- control module connector A terminal #19 (#19) and SIM card reader connector terminal #5.
Check the wiring in the cable harness. Check for a short-circuit to each other.
Check the wiring in the cable harness. Check for a short-circuit to ground.
Check the connectors for loose connections, damaged or bent terminal pins and oxidation.

Other information:
- To access the phone module (PHM), see Phone module (PHM), replacing Phone Module (PHM), Replacing
- To access or replace the SIM card reader, see Infotainment control module (ICM), replacing Infotainment Control Module (ICM), Replacing
- To connect the breakout box, see Connecting the breakout box Connecting the Breakout Box, Phone Module (PHM)
- Checking wiring and terminals Checking Wiring and Terminals.













Was a fault detected?

Yes - FAULT FOUND

No - Checking the component and wiring

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