DTC 4-3: Overhead Module Microphone Error: Description
WARNING: This page is about a different car, the 2007 Lexus GX 470. However, it is still accessible from the selected car via links, so may be relevant.
This DTC is output when one of the following occurs: 1) the mayday ECU assembly is malfunctioning; 2) the microphone assembly is malfunctioning; 3) the microphone amplifier assembly is malfunctioning; or 4) the wire harness between the mayday ECU assembly and the roof console box assembly is open or short.
DTC DETECTION CONDITION AND TROUBLE AREA
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| 4-3 | Communication or communication line is abnormal between mayday ECU and roof console box |
|