Infotainment control unit (high level)
NOTE: If a unit or component is likely to fail and the vehicle is still under manufacturer's warranty, refer to the warranty manual before replacing the component (section B1.2) or determine if there is any previously approved special program in operation.
NOTE: Universal Scan Tools may not read the listed codes or may only read 5-digit codes. Match the 5 digits from the scan tool with the first 5 digits of the 7-digit code listed to identify the problem (the last 2 digits give additional information read by the diagnostic system approved by the manufacturer).
NOTE: Always use a digital multimeter when performing voltage or resistance tests (DMM) accurate to three decimal places and with a valid calibration certificate. When testing resistance, be sure to consider the resistance of the DMM leads.
NOTE: Before starting diagnostic programs using troubleshooting tests, check and correct major problems.
NOTE: Inspect the connectors for signs of water intrusion and their pins for damage and (or) traces of corrosion.
NOTE: If DTCs are logged and there is no problem after performing troubleshooting tests, an intermittent problem may be the cause. Be sure to check for loose connections and corroded contacts.
Description and operation
For a detailed description of how to operate the infotainment system, see the relevant section «Description and operation» repair manuals. For more information, see the chapter: Audio system (415-01 Infotainment system, Description and operation).
DTC | Description | Possible reason | Action |
B101C-11 | Search button in ascending order | Seek Up Switch Circuit Short to Ground | Refer to the electrical circuit diagrams and check search up range switch circuit for short to ground |
B101D-11 | Search button in descending order | Seek down range switch circuit short circuit to ground | Refer to electrical circuit diagrams and check search down range switch circuit for short to ground |
B101F-11 | Eject switch | Disk eject button circuit short to ground | Refer to electrical circuit diagrams and check disc eject switch circuit for short to ground |
B1022-11 | Audio on/off switch | Audio on/off button circuit - short to ground | Refer to electrical circuit diagrams and check audio power on/off button circuit for short to ground |
B104A-11 | Button 1 | Button 1 circuit - short circuit to ground | Refer to the electrical circuit diagrams and check button 1 circuit for short to ground |
B104B-11 | Button 2 | Button 2 circuit - short circuit to ground | Refer to electrical circuit diagrams and check button 2 circuit for short to ground |
B104C-11 | Button 3 | Button 3 circuit - short circuit to ground | Refer to the electrical circuit diagrams and check button 3 circuit for short to ground |
B104D-11 | Button 4 | Button 4 circuit - short to ground | Refer to the electrical circuit diagrams and check button circuit 4 for short to ground |
B104E-11 | Button 5 | Button circuit 5 - short circuit to ground | Refer to electrical circuit diagrams and check button circuit 5 for short to ground |
B11A6-11 | FM button | FM button circuit short circuit to ground | Refer to electrical circuit diagrams and check FM button circuit for short to ground |
B11A7-11 | AM button | AM button circuit short circuit to ground | Refer to electrical circuit diagrams and check AM button circuit for short to ground |
B11A8-11 | CD button | CD button circuit short to ground | Refer to electrical circuit diagrams and check CD button circuit for short to ground |
B11A911 | Voice button | Tone button circuit short to ground | Refer to electrical circuit diagrams and check tone button circuit for short to ground |
B11AA-11 | Scan Up Button | Search Up Skip Button Circuit - Short to Ground | Refer to electrical circuit diagrams and check skip up button circuit for short to ground |
B11AB-11 | Down Scan Skip Button | Search Down Skip Button Circuit - Short to Ground | Refer to electrical circuit diagrams and check skip down button circuit for short to ground |
B11AC-11 | Enter button (Enter) | Button chain "Enter": short circuit to ground | Refer to electrical circuit diagrams and check entry button circuit for short to ground |
B11AD-11 | exit button (Exit) | Button chain "Exit" (Exit): short circuit to ground | Refer to electrical circuit diagrams and check exit button circuit for short to ground |
B11AE-11 | Menu button | Menu button circuit - short circuit to ground | Refer to electrical circuit diagrams and check menu button circuit for short to ground |
B11AF-11 | Phone button | Phone button circuit short to ground | Refer to electrical circuit diagrams and check phone button circuit for short to ground |
B11B0-11 | Scan Button | Scan Button Circuit Short to Ground | Refer to electrical circuit diagrams and check scan button circuit for short to ground |
B11B1-11 | Auto button | Auto Mode Button Circuit - Short to Ground | Refer to electrical circuit diagrams and check auto button circuit for short to ground |
B11B3-11 | Button 6 | Button 6 circuit - short circuit to ground | Refer to electrical circuit diagrams and check button circuit 6 for short to ground |
B11B4-11 | Button 7 | Button circuit 7 - short circuit to ground | Refer to electrical circuit diagrams and check button circuit 7 for short to ground |
B11B5-11 | Button 8 | Button 8 circuit - short circuit to ground | Refer to electrical circuit diagrams and check button 8 circuit for short to ground |
B11B6-11 | Button 9 | Button 9 circuit - short to ground | Refer to electrical circuit diagrams and check button circuit 9 for short to ground |
B1A59-49 | Sensor power supply 5 V | Internal malfunction of electronic equipment | Install a new infotainment system module, see the new module/component installation note at the beginning of the DTC index |
B1D21-15 | Remote control switch | Remote control circuit short circuit to power, open circuit | Refer to electrical circuit diagrams and check remote control switch circuit for short to power and open circuit. |
U0010-00 | Medium speed CAN bus | Bus shutdown | Perform the troubleshooting tests associated with this DTC using the manufacturer approved diagnostic system |
U0127-00 | Lost Communication With Tire Pressure Monitoring System Module | Communication loss | Perform CAN network integrity checks using the manufacturer approved diagnostic system. Check the CJB for DTCs and refer to the appropriate DTC index. For more information, please refer to the chapter: Communication Network (418-00 Module communication network, Diagnostics and checks). |
U0140-00 | Loss of communication with CJB | Communication loss | Perform CAN network integrity checks using the manufacturer approved diagnostic system. Check the CJB for DTCs and refer to the appropriate DTC index. For more information, please refer to the chapter: Communication Network (418-00 Module communication network, Diagnostics and checks). |
U0142-00 | Lost Communication With Body Control Module 'B' | Communication loss | Perform CAN network integrity checks using the manufacturer approved diagnostic system. Check the CJB for DTCs and refer to the appropriate DTC index. For more information, please refer to the chapter: Communication Network (418-00 Module communication network, Diagnostics and checks). |
U0155-00 | Loss of communication with the instrument panel | Communication loss | Perform CAN network integrity checks using the manufacturer approved diagnostic system. Check the instrument panel for DTCs and refer to the DTC index for their meaning. For more information, see chapter: Instrument panel (413-01 Instrument panel, Diagnostics and checks). |
U0159-00 | Loss of Communication with Parking Assist Control Module A | Communication loss | Perform CAN network integrity checks using the manufacturer approved diagnostic system. Check the parking aid module for DTCs and refer to the appropriate DTC index. For more information, see the chapter: Parking assistance (413-13 Parking assistance, Diagnostics and checks). |
U0164-00 | Loss of communication with the control unit of the microclimate control system | Communication loss | Perform CAN network integrity checks using the manufacturer approved diagnostic system. Check the climate control module for DTCs and refer to the appropriate DTC index. For more information, see the chapter: Climate control system (412-00 Climate control system - General information, Diagnostics and checks). |
U0184-00 | Loss of communication with the radio | Communication loss | Perform the troubleshooting tests associated with this DTC using the manufacturer approved diagnostic system |
U0186-00 | Lost Communication with Audio Amplifier A | Communication loss | Perform the troubleshooting tests associated with this DTC using the manufacturer approved diagnostic system |
U0193-00 | Lost Communication with Digital Audio Control Module A | Communication loss | Perform the troubleshooting tests associated with this DTC using the manufacturer approved diagnostic system |
U0197-00 | Loss of communication with telephony control module | Communication loss | Perform the troubleshooting tests associated with this DTC using the manufacturer approved diagnostic system |
U0199-00 | Loss of communication with DDM | Communication loss | Perform MOST network integrity checks using the manufacturer approved diagnostic system. Check the DDM for DTCs and refer to the appropriate DTC index below |
U0200-00 | Loss of communication with PDM | Communication loss | Perform MOST network integrity checks using the manufacturer approved diagnostic system. Check the PDM for DTCs and refer to the relevant DTC index below |
U0214-00 | Loss of Communication with Remote Function Actuator | Communication loss | Perform CAN network integrity checks using the manufacturer approved diagnostic system. Check the remote keyless entry module for DTCs and refer to the appropriate DTC index below |
U0245-00 | Lost Communication With Front Entertainment System Control Module | Communication loss | Perform MOST Network Continuity Checks Go to PINPOINT TEST??.. Check for additional DTCs and refer to the relevant DTC index |
U0256-00 | Lost Communication with Front Control Interface Module | Communication loss | Perform MOST network integrity checks. Go to PINPOINT TEST. Check for additional DTCs and refer to the relevant DTC index |
U0257-00 | Lost Communication with Front Control/Display Interface Module | Communication loss | Perform MOST Network Continuity Checks Go to PINPOINT TEST. Check for additional DTCs and refer to the relevant DTC index |
U0300-00 | Internal control unit software incompatibility | Wrong software | Make sure the software and hardware versions match |
U0300-51 | Internal control unit software incompatibility | not programmed | Download the correct software version using the manufacturer approved diagnostic system |
U3000-55 | Control block | Incorrect vehicle configuration data received | Check/update vehicle configuration file using manufacturer approved diagnostic system |
U3000-87 | Control block | Missing message | Check the central junction box for DTCs and refer to the DTC index. For more information, please refer to the chapter: Communication Network (418-00 Module communication network, Diagnostics and checks). Check the infotainment system module for DTCs for the vehicle and MOST network configuration file and refer to the appropriate DTC index. Perform MOST/CAN network tests using the manufacturer approved diagnostic system |
U3002-81 | Vehicle identification number | Wrong VIN saved and locked (the module was previously installed on another vehicle) | Make sure the correct type of component is installed on the vehicle |
U3003-62 | Battery voltage | Battery voltage mismatch of 2V or more between infotainment control module and central junction box | Perform the troubleshooting tests associated with this DTC using the manufacturer approved diagnostic system |
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