DTC B2274-11: ACC Circuit Short to Ground [10/2022 - ]: Description
WARNING: This page is about a different car, the 2025 Lexus RX 350, 2024 Lexus RX 350, and 2023 Lexus RX 350. However, it is still accessible from the selected car via links, so may be relevant.
This DTC is stored when a malfunction in the ACC output circuit is detected. The ACC output circuit is the circuit between terminal ACCD of the certification ECU (smart key ECU assembly) and the ACC relay.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | DTC Output from | Priority | Note |
|---|---|---|---|---|---|---|
| B2274-11 | ACC Circuit Short to Ground | The ACC relay circuit of the certification ECU (smart key ECU assembly) is malfunctioning. (1-trip detection logic*) HINT: When the voltage at terminal ACCD is not at the standard, the system is determined to be malfunctioning. |
|
Power Source Control | A | DTC Output Confirmation Operation:
|
- *: Only detected while a malfunction is present.
VEHICLE CONDITION AND FAIL-SAFE FUNCTION WHEN MALFUNCTION DETECTED
| Vehicle Condition when Malfunction Detected | Fail-safe Function when Malfunction Detected |
|---|---|
| If there is a malfunction due to the ACC relay being stuck off, the ACC relay does not turn on even though the ignition switch is ACC. HINT: The ignition switch can be turned to ON and the engine can be started. |
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RELATED DATA LIST AND ACTIVE TEST ITEMS
| DTC No. | Data List and Active Test |
|---|---|
| B2274-11 | Power Source Control
|