Lexus ES: ABS Pump Motor Supply Voltage Circuit Short to Ground or Open (C052F14)
DESCRIPTION
The ABS motor relay is built into the brake actuator assembly.
When the skid control ECU (brake actuator assembly) operates ABS, TRAC, VSC, brake hold, or brake assist, the ABS motor relay turns ON and drives the motor pump built into the brake actuator assembly.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| C052F14 | ABS Pump Motor Supply Voltage Circuit Short to Ground or Open |
| Skid control ECU (brake actuator assembly) |
| Vehicle Condition | |||
|---|---|---|---|
| Pattern 1 | Pattern 2 | ||
| Diagnosis Condition | The pump motor is turned off after operating. | ○ | - |
| Malfunction Status | 0.6 V or more is detected at the pump motor. | ○ | - |
| The power supply of the ABS motor relay is less than 5 V. | - | ○ | |
| Detection Time | 0.48 seconds or more. | 0.15 seconds or more. | |
| 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 skid control ECU (brake actuator assembly).
Click here
| NEXT |  | END |
READ NEXT:
ECM Communication (C124A00)
DESCRIPTION If the vehicle information stored by the skid control ECU (brake actuator assembly) does not match that sent from the ECM or a new skid control ECU (brake actuator assembly) is installed a
ECM Communication (C124A00)
DESCRIPTION If the vehicle information stored by the skid control ECU (brake actuator assembly) does not match that sent from the ECM or a new skid control ECU (brake actuator assembly) is installed a
Wheel Speed Sensor Signal Compare Failure (C124E62)
DESCRIPTION The skid control ECU (brake actuator assembly) measures the speed of each wheel by receiving signals from each speed sensor. These signals are used for recognizing that all four wheels are
SEE MORE:
Installation
INSTALLATION PROCEDURE 1. ALIGN FRONT WHEELS FACING STRAIGHT AHEAD 2. INSTALL STEERING COLUMN ASSEMBLY NOTICE: Make sure that the wire harness is not interfering with the steering column assembly. (a) Install the steering column assembly with the bolt and 2 nuts. Torque: 36 N·m {367 kgf·cm, 27 ft
Switch Lights of Remote Touch do not Illuminate
DESCRIPTION Power is supplied to the remote touch (remote operation controller assembly) illumination when the light control switch is in the tail or head position. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: Inspect the fuse for circuits related to this system before performing the following pr
