DTC P178A-14: Gear Shift Control Module "B" Wake-up Circuit Short to Ground or Open [09/2023 - ]: Description
WARNING: This page is about a different car, the 2024 Lexus TX 500h. However, it is still accessible from the selected car via links, so may be relevant.
The shift actuator ECU starts when it receives a WAKE signal from the shift control ECU.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Warning Indicate | DTC Output from | Priority | Note |
|---|---|---|---|---|---|---|---|---|
| P178A-14 | Gear Shift Control Module "B" Wake-up Circuit Short to Ground or Open | When the auxiliary battery voltage and BAT1 terminal voltage are a certain value or more, a low WAKE terminal voltage is continuously detected (1 trip detection logic) |
|
Does not come on | Multi-information Display Error Message
|
Hybrid Control | A | SAE: P178B |