Lexus ES: Steering Angle Sensor Unusual Bank Angle Detected (C1440)
DESCRIPTION
If the skid control ECU (brake booster with master cylinder assembly) determines that the vehicle is being driven at a steep bank angle, the skid control ECU (brake booster with master cylinder assembly) stores DTC C1440 while VSC operation is temporarily disabled.
This is not a malfunction if the system and sensor circuits are normal and normal VSC operation resumes.
| DTC No. | Detection Item | INF Code | DTC Detection Condition | Trouble Area | MIL | Note |
|---|---|---|---|---|---|---|
| C1440 | Steering Angle Sensor Unusual Bank Angle Detected | 1157 | Driving at a steep bank angle. | Yaw rate sensor (airbag ECU assembly) | Does not come on | VSC DTC |
PROCEDURE
| 1. | CHECK DTC |
(a) Clear the DTCs.
Click here .gif)
(b) Turn the power switch off.
(c) Turn the power switch on (READY).
(d) Perform a road test.
(e) Check if the same DTC is output.
Click here
| Result | Proceed to |
|---|---|
| DTC C1440 is output. | A |
| Yaw rate and acceleration sensor DTCs are output. | B |
| DTC C1440 is not output. | C |
| B |  | REPAIR CIRCUITS INDICATED BY OUTPUT DTCS |
| C | | END (VSC TEMPORARILY DISABLED) |
|
| 2. | CLEAR DTC |
(a) Clear the DTCs.
Click here
| NEXT | | END |
READ NEXT:
Invalid Data Received from Deceleration Sensor (C1442,C1443)
DESCRIPTION The airbag ECU assembly has a built-in yaw rate and acceleration sensor and detects the vehicle condition using 2 circuits (GL1, GL2). The skid control ECU (brake booster with master cylin
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 C14
Calibration
CALIBRATION DESCRIPTION (a) After replacing any VSC related components or performing wheel alignment adjustment, clear and read the sensor calibration data. Refer to the table below and then perform t
SEE MORE:
Actuator Supply Voltage "A" Circuit Short to Ground or Open (P065714)
DESCRIPTION The electronic throttle control system has a dedicated power supply circuit. The voltage (+BM) is monitored and when it is low (less than 4 V), the ECM determines that there is a malfunction in the electronic throttle control system and cuts off the current to the throttle actuator. When
Pressure Control Solenoid "D" Actuator Stuck Off (P27137F)
DESCRIPTION Based on signals from the accelerator position sensor and transmission revolution sensors (NT and NC), the ECM controls the solenoid (SLT) valve using a predetermined current. As a result, the line pressure is adjusted to a pressure that is appropriate for the throttle angle and engine o
