DTC B1492-1A: Microphone #1 Input Signal - Circuit resistance below threshold: Action

NOTE: If this DTC is logged simultaneously with a cluster of DTCs including U200F-11, check symptoms for U200F-11 first, rectify the fault, clear DTCs and retest

Refer to the electrical circuit diagrams and check the infotainment master controller microphone 1 circuit for open circuit, or low resistance between positive and negative pins
Refer to the electrical circuit diagrams and check the infotainment slave controller (where fitted) microphone 1 circuit for open circuit, or low resistance between positive and negative pins