Inspection Mode 10
WARNING: This page is about a different car, the 2022 Subaru WRX. However, it is still accessible from the selected car via links, so may be relevant.
| DTC | Description & trouble part | Note |
|---|---|---|
| U1678 | LIN COMMUNICATION BUS 4 ERROR BODY CONTROL MODULE | BIU detects DTC only when [Light LIN setting] is [Support]. |
| U1781 | LOST COMMUNICATION WITH LDM RH MODULE | BIU detects DTC only when [Light LIN setting] is [Support]. |
| U178A | LOST COMMUNICATION WITH LDM LH MODULE | BIU detects DTC only when [Light LIN setting] is [Support]. |
Diagnostic procedure:
- Using the Subaru Select Monitor, perform the clear memory of [Body Control]. Ref. to COMMON (DIAGNOSTICS)>CLEAR MEMORY
- Using the Subaru Select Monitor, read the DTC of [Body Control] to check that there is no DTC displayed. Ref. to BODY CONTROL (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) NOTE:
If the DTC is displayed on the screen, the trouble is still present. Perform the diagnosis for the displayed DTCs. After solving the DTC, repeat from step 1 .
- After the ignition switch is turned ON, wait for 5 seconds or more.
- Repeat the step 3 three or more times.
- Using the Subaru Select Monitor, read the DTC of [Body Control] to check that there is no DTC displayed. Ref. to BODY CONTROL (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) NOTE:
If the DTC is displayed on the screen, the trouble is still present. Perform the diagnosis for the displayed DTCs.