Lexus ES: ABS Pump Motor Control Internal Electronic Failure (C052C49)
DESCRIPTION
The ABS motor relay and pump motor are built into the brake actuator assembly.
If the skid control ECU (brake actuator assembly) detects a malfunction in the drive circuit of the pump motor, this DTC is stored.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| C052C49 | ABS Pump Motor Control Internal Electronic Failure |
| Skid control ECU (brake actuator assembly) |
| Vehicle Condition | |||
|---|---|---|---|
| Pattern 1 | Pattern 2 | ||
| Diagnosis Condition | The system has started. | - | ○ |
| Malfunction Status | The skid control ECU (brake actuator assembly) detects a malfunction in the pump motor circuit. | ○ | - |
| A short to +B is detected during the ABS motor drive circuit 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.
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:
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
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
SEE MORE:
Removal
REMOVAL CAUTION / NOTICE / HINT The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed and installed, or replaced during speaker assembly with bracket removal/installation are shown below. Necessary Procedure After Parts Rem
Diagnosis System
DIAGNOSIS SYSTEM DESCRIPTION When troubleshooting OBD II (On-Board Diagnostics) vehicles, the Techstream (complying with SAE J1978) must be connected to the DLC3 (Data Link Connector 3) of the vehicle. Various data in the vehicle's ECM (Engine Control Module) can be then read. OBD II regulations re
