Lexus ES: Brake System Control Module "A" Calibration / Parameter Memory Failure (C059746)
DESCRIPTION
If the system information stored by the skid control ECU (brake actuator assembly) is corrupted, this DTC is output.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| C059746 | Brake System Control Module "A" Calibration / Parameter Memory Failure | The skid control ECU (brake actuator assembly) is corrupted or cannot be read. | Skid control ECU (brake actuator assembly) |
| Vehicle Condition | |||
|---|---|---|---|
| Pattern 1 | Pattern 2 | ||
| Diagnosis Condition | - | - | - |
| Malfunction Status | The skid control ECU (brake actuator assembly) is corrupted. | ○ | - |
| The skid control ECU (brake actuator assembly) is cannot be read. | - | ○ | |
| 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.
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PROCEDURE
| 1. | REPLACE BRAKE ACTUATOR ASSEMBLY |
(a) Replace the skid control ECU (brake actuator assembly).
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Do not apply or add any oil or grease to the belt tensioner to prevent abnormal noises from the belt tensioner pulley, belt squealing, etc.
Do not allow oil or grease to adhere to the moving parts of the belt tensioner, as this may cause malfunctions.
If oi
