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:
Camera Position Adjustment Incomplete (C1697)
DESCRIPTION This DTC is stored when the parking assist ECU judges that the camera initial setting has not been memorized (camera view adjustment is incomplete). DTC No. Detection Item DTC Detection Condition Trouble Area C1697 Camera Position Adjustment Incomplete Camera initial set
Replacement
REPLACEMENT
CAUTION / NOTICE / HINT
CAUTION:
Do not remove the radiator cap sub-assembly or radiator drain cock plug while
the engine and radiator assembly are still hot. Pressurized, hot engine coolant
and steam may be released and cause serious burns.
PROCEDURE
1. DRAIN ENGINE COOLANT
