C1365

C1365

Description
The accumulator pressure sensor is built into the brake actuator.

The brake ECU detects the accumulator pressure from the data sent from the accumulator pressure sensor, and then runs and stops the pump motor by operating the motor relay.

DTCs may be output if the accumulator pressure drops due to frequent braking (this is not a malfunction).

C1365:

Diagnosis Procedure

CAUTION:
When replacing the brake ECU or brake actuator assembly, perform initialization of linear solenoid valve and calibrating.

1.CHECK HARNESS AND CONNECTOR (BRAKE ECU - BRAKE ACTUATOR)
1. Disconnect the brake ECU connector and the brake actuator connector.
2. Measure the resistance according to the value(s) in the table below.





Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace harness or connector.

2.READ VALUE OF CONSULT-III (ACCUMULATOR PRESSURE SENSOR)
1. Turn the ignition switch OFF.
2. Connect the CONSULT-III.
3. Turn the ignition switch ON.
4. Select the "DATA MONITOR" on the CONSULT-III.

ABS/VDC:

5. Depress the brake pedal 4 or 5 times to operate the pump motor, and check the output value on the CONSULT-III with the motor stopped (not braking).

NOTE:
Accumulator pressure sensor voltage does not drop.

Is the inspection result normal?
YES >> GO TO 3.
NO >> Replace brake actuator assembly.

3.RECONFIRM DTC
1. Turn the ignition switch OFF.
2. Clear the DTC.
3. Perform the road and braking test.
4. Check if the same DTC is recorded.

Result:

A >> Check for intermittent problems (symptom simulation).
B >> Replace brake ECU.

Special Repair Requirement

1.ZERO ADJUSTMENT FOR EACH SENSOR AND OFFSET LEANING FOR LINEAR SOLENOID VALVE
After erasing brake ECU memories, perform zero adjustment of following sensors and initialization of linear solenoid valve.
^ Steering angle sensor: BRC-9, "PERFORM ZERO POINT OF STEERING ANGLE SENSOR: Description". Testing and Inspection
^ Yaw rate/side/decel G sensor: BRC-8, "PERFORM ZERO POINT OF YAW RATE/SIDE/DECEL G SENSOR: Description". Testing and Inspection
^ Brake stroke sensor: BRC-9, "PERFORM ADJUSTMENT OF STROKE SENSOR: Description". Perform Adjustment of Stroke Sensor
^ Linear solenoid valve: BRC-7, "PERFORM INITIALIZATION OF LINEAR SOLENOID VALVE AND CALIBRATION: Description". Perform Initialization of Linear Solenoid Valve and Calibration
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