Lexus NX: Motor Drive Permission Malfunction (C1451)
DESCRIPTION
If air bleeding has not been performed, the skid control ECU (brake booster with master cylinder assembly) stores DTC C1451 to prevent the entry of air due to pump motor operation.
DTC C1451 is stored when Invalid Mode is selected, the system will not return to normal until the air bleeding procedure is performed.
| DTC No. | Detection Item | INF Code | DTC Detection Condition | Trouble Area | Note |
|---|---|---|---|---|---|
| C1451 | Motor Drive Permission Malfunction | - | Air bleeding has not been performed. |
| - |
PROCEDURE
| 1. | CHECK BRAKE FLUID LEVEL |
(a) Check that the brake fluid level is sufficient.
OK:
Brake fluid level is sufficient.
HINT:
- If the fluid level drops, check for fluid leaks, and repair as necessary.
-
If no fluid leaks exist, add and adjust the fluid level.
Click here
.gif)
| NG | .gif) | CHECK AND REPAIR BRAKE FLUID LEAKS OR ADD FLUID |
|
.gif)
| 2. | PERFORM AIR BLEEDING |
(a) Bleed the air from the brake system.
Click here
HINT:
If air bleeding has been performed, this DTC will be cleared.
|
| 3. | RECONFIRM DTC |
(a) Check if the same DTC is output.
Click here
| Result | Proceed to |
|---|---|
| DTC C1451 is output. | A |
| DTC C1451 is not output. | B |
| B | | END |
|
| 4. | CLEAR DTC |
(a) Clear the DTCs.
Click here
| NEXT | | END |
READ NEXT:
Control Module Communication Bus OFF (U0073,U0120,U0123,U0124,U0126,U0128,U0293)
DESCRIPTION The skid control ECU (brake booster with master cylinder assembly) receives signals from the hybrid vehicle control ECU, steering sensor, parking brake ECU assembly, certification ECU (sma
ABS Warning Light Remains ON
DESCRIPTION The skid control ECU (brake booster with master cylinder assembly) is connected to the combination meter assembly via CAN communication. If any of the following is detected, the ABS warnin
ABS Warning Light does not Come ON
DESCRIPTION The skid control ECU (brake booster with master cylinder assembly) is connected to the combination meter assembly via CAN communication. CAUTION / NOTICE / HINT NOTICE: When replacing the
SEE MORE:
ECU Malfunction (C1611)
DESCRIPTION If the clearance warning ECU assembly detects an internal malfunction during self-diagnosis, DTC C1611 is stored. DTC No. Detection Item DTC Detection Condition Trouble Area C1611 ECU Malfunction
Sub-CPU abnormal signal
Mirror check abnormal
Clearance warning E
Precaution
PRECAUTION CAUTION:
Before inspecting the high-voltage system or disconnecting the low voltage connector of the inverter with converter assembly, take safety precautions such as wearing insulated gloves and removing the service plug grip to prevent electrical shocks. After removing the service pl
