Dtc C Brake Fluid Level Lowopen Circuit In Brake Fluid Level Warning Switch Circuit

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description

The brake fluid level warning switch sends the appropriate signal to the skid control ECU when the brake fluid level drops.

A brake fluid level signal is transmitted from the translate ECU to the skid control ECU.

DTC CHART

DTC No.

DTC Detecting Condition

Trouble Area

C1202/52

When any of the following conditions are detected:

1. Low fluid level condition in the brake master cylinder reservoir tank continues for 30 sec. or more when vehicle stops, or for 60 sec. or more when driving.

2. With ECU terminal IG1 voltage is 9.5 V to 17.2 V and open circuit for the brake fluid level warning switch circuit continues for 2 sec. or more.

• Brake fluid level

• Brake fluid level warning switch

• Brake fluid level warning switch circuit

• Skid control ECU

• CAN1 communication system

• Translate ECU

wiring diagram wiring diagram

2006 BRAKES Brake Control - Sequoia

Brake Fluid Test Switch Schematic
Fig. 46: Identifying Brake Fluid Level Low/Open Circuit Wiring Diagram Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NOTE: When replacing the skid control ECU, perform zero point calibration (See CALIBRATION ).

inspection procedure

2006 BRAKES Brake Control - Sequoia

1. CHECK BRAKE FLUID LEVEL

a. Check the amount of fluid in the brake reservoir.

NG: CHECK FOR LEAKAGE AND REPAIR OK: GO TO NEXT STEP.

2. CHECK DTC (TRANSLATE ECU)

a. Check DTC of the translate ECU (See DTC CHECK/CLEAR ).

RESULT:

DTC CHART

DTC 58 is not output

A

DTC 58 is output

3. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - TRANSLATE ECU) NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: REPLACE SKID CONTROL ECU

4. INSPECT BRAKE FLUID LEVEL WARNING SWITCH

a. Disconnect the brake fluid level warning switch connector.

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

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection

Switch Condition

Specified Condition

(B2-1) - (B2-2)

Float UP

10 kohm or more (No continuity)

(B2-1) - (B2-2)

Float DOWN

1 ohm or less (Continuity)

NG: REPLACE BRAKE MASTER CYLINDER RESERVOIR SUB-ASSEMBLY

2006 BRAKES Brake Control - Sequoia

2006 Sienna Brake Fluid Reservoir
Fig. 47: Inspecting Brake Fluid Level Warning Switch Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

OK: GO TO NEXT STEP.

5. CHECK HARNESS AND CONNECTOR (BRAKE FLUID LEVEL WARNING SWITCH -TRANSLATE ECU)

a. Check for open and short circuit in harness and connector between brake fluid level warning switch and translate ECU.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: GO TO NEXT STEP.

6. REPLACE TRANSLATE ECU

a. Clear the DTC (See DTC CHECK/CLEAR ).

b. Turn the ignition switch OFF.

c. Turn the ignition switch to the ON position, and check if the same DTC still remains in the memory.

RESULT:

RESULT PROCEED I-

2006 BRAKES Brake Control - Sequoia

DTC C1202/52 is output

A

DTC C1202/52 is not output

B

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Responses

  • melba
    CAN wiring diagram toyota yaris 2006?
    6 years ago
  • Simone
    How to wire in a low brake fluid switch?
    5 years ago

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