DTC    C1202/68    Master Reservoir Level Malfunction

for Preparation Click here


DESCRIPTION

When a fluid level drop in the master cylinder reservoir is detected, the signal is input to the skid control ECU.
When the DTC for the fluid level drop is memorized, the warning is canceled if the fluid level returns to normal and the other DTCs are not input.

DTC No.
INF Code
DTC Detecting Condition
Trouble Area
C1202/68
511
  1. Pump motor operates for specified period when reservoir level drops.
  2. Brake operation signal is input when the reservoir level is abnormal and the ignition switch is on.
  1. Brake fluid level
  2. Brake fluid level warning switch
  3. Wire harness or connector
  4. Skid control ECU
C1202/68
512
  1. Pump motor operates for specified period when reservoir level drops.
  2. Brake operation signal is input when the reservoir level is abnormal and the ignition switch is on.
  1. Brake fluid level warning switch
  2. Wire harness or connector
  3. Skid control ECU

WIRING DIAGRAM


F100408E02


INSPECTION PROCEDURE

NOTICE:
When replacing the skid control ECU assembly, perform initialization of the linear solenoid valve and calibration (Click here).

HINT:
Before releasing the parking brake, set the chocks to hold the vehicle for safety.

1.CHECK BRAKE FLUID LEVEL IN RESERVOIR

  1. Check that the brake fluid level is sufficient.

    HINT:
    1. If the fluid level drops, check for a fluid leak, and repair if found.
    2. If no leaks exist, add and adjust fluid and then check that the trouble code is not output again.

    OK:
    Brake fluid level is proper.



NG
ADD BRAKE FLUID
OK


2.INSPECT BRAKE FLUID LEVEL WARNING SWITCH


    F100409E01

  1. Remove the reservoir tank cap and strainer.

  1. Disconnect the brake fluid level warning switch connector.

  1. Measure the resistance according to the value(s) in the table below.

    Resistance:
    Tester Connection
    		Fluid Level
    		Specified Condition
    (B1-1) - (B1-2)
    		Proper
    		1.84 to 2.16 kΩ
    (B1-1) - (B1-2)
    		Below min.: level
    		Below 1 Ω



NG
REPLACE BRAKE MASTER CYLINDER RESERVOIR ASSEMBLY
OK


3.CHECK HARNESS AND CONNECTOR (BETWEEN SKID CONTROL ECU AND FLUID LEVEL WARNING SWITCH)


    F047515E02

  1. Disconnect the skid control ECU connector and the brake fluid level warning switch connector.

  1. Measure the resistance according to the value(s) in the table below.

    Resistance:
    Tester Connection
    		Specified Condition
    S38-6 (LBL) - (B1-2)
    		Below 1 Ω

  1. Measure the resistance according to the value(s) in the table below.

    Resistance:
    Tester Connection
    		Specified Condition
    S38-6 (LBL) - Body ground
    		10 kΩ or higher



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.RECONFIRM DTC

  1. Clear the DTCs (Click here).

  1. Turn the ignition switch on.

  1. Check the same DTCs are recorded (Click here).

    Result:

    Condition
    		Proceed To
    DTC is output
    		A
    DTC is not output
    		B

    HINT:
    This DTC may be memorized due to a malfunction in the connector terminal connection, etc.



B
END
A

REPLACE SKID CONTROL ECU