12V Out3 Short Circuit To Ubat
Disconnect the connector from the subwoofer and check if the DTC remains active. Check for short circuit between the subwoofer and the power supply voltage. Note! The signal is 12 V, but the subwoofer is powered by 24 V via the power station (P2). Check the harness between the subwoofer (N16) and the infotainment system. If it becomes passive then check if the subwoofer has an internal short circuit. Note. Before replacing the infotainment system update to the latest available software.
What you'll see
The subwoofer (N16) doesn't work properly since it doesn't receive any signal from the infotainment system (pin E12).
System reaction
External Peripheral connected to this line will not work
Diagnostic depth
If the parameter System_Subwoofer = on and When 12V Out3 Line is Short Circuited to Ubat, Provided 12V Out3 Line should be "LOW". This fault will be checked in run-time but once the fault is SET the digital out line will be disabled. So, scanning of this fault will be stopped for that power cycle and again scanning of fault starts in the next power cycle.
12V Out malfunction is triggered by any of the following conditions: - Faulty connector - Faulty wire harness - Faulty subwoofer