Infotainment control unit (entry 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 |
B1A00-16 | Control block | Low supply voltage | Perform the troubleshooting tests associated with this DTC using the manufacturer approved diagnostic system |
B1A01-01 | Speaker #1 | Left front speaker circuit short circuit | Perform the troubleshooting tests associated with this DTC using the manufacturer approved diagnostic system |
B1A01-13 | Speaker #1 | Left front speaker circuit open circuit | Refer to electrical circuit diagrams and check front left speaker circuit for open circuit |
B1A02-01 | Speaker #2 | Right front speaker circuit short circuit | Perform the troubleshooting tests associated with this DTC using the manufacturer approved diagnostic system |
B1A02-13 | Speaker #2 | Right front speaker circuit open circuit | Refer to electrical circuit diagrams and check front right speaker circuit for open circuit |
B1A03-01 | Speaker #3 | Left rear speaker circuit short circuit | Perform the troubleshooting tests associated with this DTC using the manufacturer approved diagnostic system |
B1A03-13 | Speaker #3 | Left rear speaker circuit open circuit | Refer to electrical circuit diagrams and check rear left speaker circuit for open circuit |
B1A04-01 | Speaker #4 | Right rear speaker circuit short circuit | Perform the troubleshooting tests associated with this DTC using the manufacturer approved diagnostic system |
B1A04-13 | Speaker #4 | Right rear speaker circuit open circuit | Refer to electrical circuit diagrams and check right rear speaker circuit for open circuit |
B1A56-14 | Antenna | Antenna circuit short to ground, open circuit | Refer to electrical circuit diagrams and check antenna circuit for short circuit to ground and open circuit |
B1D19-96 | CD player block | Internal component failure | Install a new CD player unit, see the new module/component installation note at the beginning of the DTC index. For more information, see the chapter: Audio block (415-01 Infotainment system, Removal and installation). |
B1D19-98 | CD player block | CD unit overheating | Check for additional DTCs and refer to DTC index, check/monitor system for reoccurrence |
B1D20-91 | head unit | Head unit temperature too low | Check for additional DTCs and refer to DTC index, check/monitor system for reoccurrence |
B1D20-98 | head unit | Head unit temperature too high | Check for DTCs and refer to DTC index, check/monitor system for reoccurrence |
B1D21-11 | Remote control switch | Remote control circuit: short circuit | Refer to electrical circuit diagrams and check remote control switch circuit for short to ground |
B1D21-13 | Remote control switch | Remote control circuit: open circuit | Refer to electrical circuit diagrams and check remote control switch circuit for open circuit |
U0010-87 | Medium speed CAN bus | Missing message | Perform the troubleshooting tests associated with this DTC using the manufacturer approved diagnostic system |
U0010-88 | Medium speed CAN bus | Bus shutdown | Perform CAN network integrity checks using the manufacturer's approved diagnostic system. |
U0073-88 | Shutdown of bus A of data transmission of the control unit | Bus shutdown | Perform the troubleshooting tests associated with this DTC using the manufacturer approved diagnostic system |
U0300-55 | Internal control unit software incompatibility | Check/correct the vehicle configuration file using the manufacturer approved diagnostic system. Install the correct component | |
U1A03-87 | Vehicle Configuration Options | Missing message | Check/correct the vehicle configuration file using the manufacturer approved diagnostic system. Perform CAN network integrity checks using the manufacturer's approved diagnostic system. |
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