BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS ELECTRONICALLY CONTROLLED BRAKE SYSTEM(for HEV Model) C117B62 Brake Pressure Sensor "A" / Brake Switch "A" Signal Compare Failure
DESCRIPTION
The skid control ECU (brake actuator assembly) receives stop light switch assembly signals and uses them to determine whether or not the brakes are applied.
When the brake pedal is depressed and no signal is received from the stop light switch assembly, this DTC is output.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | DTC Output from | Note |
|---|---|---|---|---|---|---|
| C117B62 | Brake Pressure Sensor "A" / Brake Switch "A" Signal Compare Failure | Either of the following is detected when the vehicle speed of 3 km/h (2 mph) or more:
1.
With the stop light switch assembly off, the stop light switch assembly is judged to be on based on the master cylinder pressure value for 3 seconds or more. 2.
With the stop light switch assembly off, the master cylinder pressure is more than 8 MPa (81.6 kgf/cm2, 1160 psi) for 3 seconds or more. |
·
Stop light switch assembly ·
Wire harness or connector ·
Skid control ECU (brake actuator assembly) |
Comes on | Brake/EPB | ·
SAE Code: C117B ·
Output ECU: Skid control ECU (brake actuator assembly) |
CONFIRMATION DRIVING PATTERN
- NOTICE:
-
When performing the normal judgment procedure, make sure that the driver door is closed and is not opened at any time during the procedure.
- HINT:
- ·
After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
·When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Connect the GTS to the DLC3.
Turn the ignition switch to ON and turn the GTS on.
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off.
Turn the ignition switch to ON (READY) and turn the GTS on.
Drive the vehicle at 3 km/h (2 mph) or more for 3 seconds. [*]
- HINT:
-
[*]: Normal judgment procedure.
-
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Chassis / Brake/EPB* / Utility / All Readiness.
*: Electric Parking Brake System
Check the DTC judgment result.
- HINT:
- ·
If the judgment result shows NORMAL, the system is normal.
·If the judgment result shows ABNORMAL, the system has a malfunction.
·If the judgment result shows INCOMPLETE, perform driving pattern again.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
- NOTICE:
-
Inspect the fuses for circuits related to this system before performing the following procedure.
PROCEDURE
Check the Data List using the GTS.
- Chassis > Brake/EPB > Data List
-
Tester Display Measurement Item Range Normal Condition Diagnostic Note Master Cylinder Sensor 1 Master cylinder pressure sensor pressure (value detected by ECU) Min.: -1.00 MPa, Max.: 23.99 MPa Brake pedal released: -1.00 to 0.00 MPa Reading increases when brake pedal is depressed
- Chassis > Brake/EPB > Data List
-
Tester Display Master Cylinder Sensor 1 - 50003 435 21
Check the value of Data List item Master Cylinder Sensor 1 when the brake pedal is released.
- OK:
The value of Data List item Master Cylinder Sensor 1 when the brake pedal is released is less than 0.15 MPa.
- Result:
Proceed to OK NG
OK
NG
| *a | Front view of wire harness connector
(to skid control ECU (Brake Actuator Assembly)) |
Make sure that there is no looseness at the locking part and the connecting part of the connector.
- OK:
The connector is securely connected.
Disconnect the A151 skid control ECU (brake actuator assembly) connector.
Check both the connector case and the terminals for deformation and corrosion.
- OK:
No deformation or corrosion.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection Condition Specified Condition A151-41 (STP) - Body ground Brake pedal depressed 11 to 14 V
- Result:
Proceed to OK NG
OK
NG
Make sure that there is no looseness at the locking part and the connecting part of the connector.
- OK:
The connector is securely connected.
Disconnect the A151 skid control ECU (brake actuator assembly) connector.
Disconnect the A53 stop light switch assembly connector.
Check both the connector case and the terminals for deformation and corrosion.
- OK:
No deformation or corrosion.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition A53-3 (L) - A151-41 (STP) Always Below 1 Ω A53-3 (L) or A151-41 (STP) - Body ground and other terminals Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG
Read the DTCs using the GTS.
- Chassis > Brake/EPB > Trouble Codes
- 50001 435
- Result:
Result Proceed to C117B62 and C05401C, C054028, C054029, C054031, C054049 and/or C054096 are output simultaneously A C117B62 is output B
A
B
Refer to "Brake drag" of problem symptoms table.
Inspect brake system: Click hereBrake>BRAKE SYSTEM (OTHER)>BRAKE SYSTEM (for HEV Model)>ON-VEHICLE INSPECTION202307,999999,_54,_113942,_0604466,RM100000002BUF6,
Inspect brake pedal free play: Click hereBrake>BRAKE SYSTEM (OTHER)>BRAKE PEDAL (for HEV Model)>ADJUSTMENT202307,999999,_54,_113942,_0604479,RM100000002BUGX,