C1368

BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM: C1345/66, C1368/67: Linear Solenoid Valve Offset Learning Undone


DESCRIPTION

The skid control ECU stores and corrects the individual differences in the stroke sensor, actuator solenoids, and stroke simulator solenoid. Perform initialization and calibration of the linear solenoid valve if any of these parts is replaced.

The skid control ECU receives the park (P) signal from the hybrid vehicle control ECU through the CAN communication system.

The DTCs are cleared when the linear valve offset learning results are normal.





INSPECTION PROCEDURE

NOTICE:
When replacing the brake booster with master cylinder (brake actuator), perform initialization and calibration of the linear solenoid valve Initialization.

HINT
When C1451/72 is output together with C1345/66 and/or C1368/67, inspect and repair the trouble areas indicated by C1451/72 first C1451.

PROCEDURE

1. CHECK DTC

(a) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.

(b) Turn the power switch off.

(c) Turn the power switch on (IG).

(d) Check that the DTCs (electronically controlled brake system and hybrid control system) are recorded Reading and Clearing Diagnostic Trouble Codes for electronically controlled brake system, or Hybrid Control System for hybrid control system).

Result:





HINT
Before performing initialization and calibration of the linear solenoid valve, C1203/95 will be output.

C -- REPAIR CIRCUITS INDICATED BY OUTPUT DTCS Electronically Controlled Brake System

B -- INSPECT HYBRID CONTROL SYSTEM Hybrid Control System
A -- Continue to next step.

2. PERFORM INITIALIZATION AND CALIBRATION OF LINEAR SOLENOID VALVE

(a) Turn the power switch off.

(b) Perform initialization and calibration of the linear solenoid valve Initialization.

NEXT -- Continue to next step.

3. RECONFIRM DTC

(a) Turn the power switch off.

(b) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.

(c) Turn the power switch on (IG).

(d) Check if the same DTC is recorded Reading and Clearing Diagnostic Trouble Codes.

Result:





B -- REPLACE BRAKE BOOSTER WITH MASTER CYLINDER Removal

A -- END