Lexus ES: Brake Pressure Control Solenoid "D" Control Circuit Short to Battery (C14FA12,...,C14FA49)
DESCRIPTION
The ABS solenoid relay and reservoir cut solenoid valves are built into the brake actuator assembly.
When the brakes are operating, the reservoir cut solenoid valves supply brake fluid from the brake master cylinder reservoir assembly to the pump motor as necessary.
When this DTC is stored, the fail-safe function operates and the ABS solenoid relay is turned off to prevent the reservoir cut solenoid valves from operating.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| C14FA12 | Brake Pressure Control Solenoid "D" Control Circuit Short to Battery | A short to +B in the reservoir cut solenoid circuit is detected during the self test. | Skid control ECU (brake actuator assembly) |
| C14FA14 | Brake Pressure Control Solenoid "D" Control Circuit Short to Ground or Open | An open or short in the reservoir cut solenoid circuit is detected during the self test. | Skid control ECU (brake actuator assembly) |
| C14FA1C | Brake Pressure Control Solenoid "D" Control Circuit Voltage Out of Range |
| Skid control ECU (brake actuator assembly) |
| C14FA1E | Brake Pressure Control Solenoid "D" Control Circuit Resistance Out of Range | An abnormal resistance in the reservoir cut solenoid circuit is detected during the self test. | Skid control ECU (brake actuator assembly) |
| C14FA49 | Brake Pressure Control Solenoid "D" Control Internal Electronic Failure | An internal malfunction in the reservoir cut solenoid circuit is detected during the self test. | Skid control ECU (brake actuator assembly) |
| Vehicle Condition | |||
|---|---|---|---|
| Pattern 1 | Pattern 2 | ||
| Diagnosis Condition | - | - | - |
| Malfunction Status | An open in the reservoir cut solenoid circuit is detected during the self test. | ○ | - |
| A short in the reservoir cut solenoid circuit is detected during the self test. | - | ○ | |
| Detection Time | - | - | |
| Number of Trips | 1 trip | 1 trip | |
HINT:
DTC will be output when conditions for either of the patterns in the table above are met.
DTC Detection Conditions: C14FA1C| Vehicle Condition | |||
|---|---|---|---|
| Pattern 1 | Pattern 2 | ||
| Diagnosis Condition | - | - | - |
| Malfunction Status | A current leak in the reservoir cut solenoid circuit is detected during the self test. | ○ | - |
| The reservoir cut solenoid valve operation request signal and reservoir cut solenoid valve operation feedback signal do not match for a certain period of time. | - | ○ | |
| Detection Time | - | - | |
| Number of Trips | 1 trip | 1 trip | |
HINT:
DTC will be output when conditions for either of the patterns in the table above are met.
CAUTION / NOTICE / HINT
NOTICE:
After replacing the skid control ECU (brake actuator assembly), perform acceleration sensor zero point calibration and store system information memorization.
Click here .gif)
PROCEDURE
| 1. | REPLACE BRAKE ACTUATOR ASSEMBLY |
(a) Replace the brake actuator assembly.
Click here
| NEXT |  | END |
READ NEXT:
Steering Angle Sensor Supply Voltage Circuit Circuit Short to Ground or Open (C14FE14)
DESCRIPTION This DTC is stored when the skid control ECU (brake actuator assembly) receives a +B line open signal from the steering angle sensor. DTC No. Detection Item DTC Detection Condition
Left Rear Wheel Speed Sensor Circuit Voltage Out of Range (C050C1C)
DESCRIPTION Refer to DTC C050C12 Click here DTC No. Detection Item DTC Detection Condition Trouble Area C050C1C Left Rear Wheel Speed Sensor Circuit Voltage Out of Range
When the
Left Rear Wheel Speed Sensor Circuit Voltage Out of Range (C050C1C)
DESCRIPTION Refer to DTC C050C12 Click here DTC No. Detection Item DTC Detection Condition Trouble Area C050C1C Left Rear Wheel Speed Sensor Circuit Voltage Out of Range
When the
SEE MORE:
Suspension Control ECU Communication Stop Mode
DESCRIPTION Detection Item Symptom Trouble Area Suspension Control ECU Communication Stop Mode Any of the following conditions are met:
Communication stop for "Suspension Control (Air Suspension)" is indicated on the "Communication Bus Check" screen of the Techstream.
Click here
Utility
UTILITY NOTICE: If the forward recognition camera has been replaced due to a malfunction in the road sign assist system, be sure to perform forward recognition camera adjustment. Otherwise all systems that use the forward recognition camera may be affected. HINT: Forward recognition camera adjustmen
