DTC B142A-88: Servo Motor LIN Communication Bus off [11/2021 - ]: Description
WARNING: This page is about a different car, the 2025 Lexus NX 350h, 2024 Lexus NX 350h, 2023 Lexus NX 350h, and 2022 Lexus NX 350h. However, it is still accessible from the selected car via links, so may be relevant.
The air conditioning harness assembly connects the air conditioning amplifier assembly and the servo motors.
The air conditioning amplifier assembly supplies power and sends operation instructions to each servo motor through the air conditioning harness assembly.
Each servo motor sends damper position information to the air conditioning amplifier assembly.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Memory |
|---|---|---|---|---|
| B142A-88 | Servo Motor LIN Communication Bus off | Diagnosis Condition:
Malfunction:
Detection Time:
|
|
Memorized |
DTC DETECTION CONDITION COMBINATION TABLE
| Vehicle Condition | |||
|---|---|---|---|
| Pattern 1 | Pattern 2 | ||
| Diagnosis Condition | Ignition switch ON | ◦ | ◦ |
| Malfunction | Error in communication line between air conditioning amplifier assembly and each servo motor | ◦ | - |
| Open in communication line between air conditioning amplifier assembly and each servo motor | - | ◦ | |
| Detection Time | Continuously for 10 seconds or more | Continuously for 10 seconds or more | |
| Trip Count | 1 trip | 1 trip | |
HINT:
If the conditions of either of these patterns are detected, a DTC will be stored.