Lexus ES: Brake System Control Module "A" System Internal Failure (C059704)
Lexus ES (XZ10) Service Manual / Brake / Brake Control / Dynamic Control Systems / Electronically Controlled Brake System (for Gasoline Model) / Brake System Control Module "A" System Internal Failure (C059704)
DESCRIPTION
The skid control ECU (brake actuator assembly) stores this DTC if malfunctions are found in a circuit inside the ECU by self diagnosis.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| C059704 | Brake System Control Module "A" System Internal Failure | Internal failure of the skid control ECU (brake actuator assembly). | Skid control ECU (brake actuator assembly) |
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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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
Data List / Active Test
DATA LIST / ACTIVE TEST DATA LIST NOTICE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a pa
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART Electronically Controlled Brake System DTC No. Detection Item Link C00631C Yaw Rate Sensor Circuit Voltage Out of Range C00631F Yaw Rate Sensor Ci
SEE MORE:
Terminals Of Ecu
TERMINALS OF ECU TERMINALS OF ECU *a Component without harness connected (Skid Control ECU (Brake Booster with Master Cylinder Assembly)) - - Terminal No. (Symbol) Terminal Description 1 (MRO1) Motor power supply output 1 2 (MRI1) Motor power supply input 1 3 (FR+)
Mechanical System Tests
MECHANICAL SYSTEM TESTS STALL SPEED TEST CAUTION:
Do not perform a stall test if there are any people or objects near the vehicle.
The vehicle could begin moving suddenly, resulting in a serious accident.
Do not perform a stall test if any wheel chocks are out of position.
The vehicle
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