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:
|
|
Comes on |
Brake/EPB |
|
MONITOR DESCRIPTION
C117B (Case 1):MONITOR STRATEGY
Related DTCs |
C117B (Case 1): Stop light switch / pressure sensor rationality monitoring (logic 1) C117B (Case 2): Stop light switch / pressure sensor rationality monitoring (logic 2) |
Required Sensors/Components(Main) |
Skid control ECU (brake actuator assembly) Speed sensor Stop light switch assembly |
Required Sensors/Components(Related) |
Skid control ECU (brake actuator assembly) Speed sensor Stop light switch assembly |
Frequency of Operation |
Continuous |
Duration |
3 seconds |
MIL Operation |
2 driving cycles |
Sequence of Operation |
None |
TYPICAL ENABLING CONDITIONS
Monitor runs whenever the following DTCs are not stored |
TMC's intellectual property |
Other conditions belong to TMC's intellectual property |
- |
TYPICAL MALFUNCTION THRESHOLDS
TMC's intellectual property |
- |
COMPONENT OPERATING RANGE
TMC's intellectual property |
- |
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:
HINT:
[*]: Normal judgment procedure.
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
*: Electric Parking Brake System
HINT:
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following procedure.
PROCEDURE
1. |
READ VALUE USING GTS (MASTER CYLINDER SENSOR) |
(a) 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 |
Tester Display |
---|
Master Cylinder Sensor 1 |
(b) 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.
NG | ![]() |
GO TO STEP 4 |
|
2. |
CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH ASSEMBLY SIGNAL INPUT CIRCUIT) |
(a) Make sure that there is no looseness at the locking part and the connecting part of the connector. OK: The connector is securely connected. |
|
(b) Disconnect the A151 skid control ECU (brake actuator assembly) connector.
(c) Check both the connector case and the terminals for deformation and corrosion.
OK:
No deformation or corrosion.
(d) 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 |
OK | ![]() |
REPLACE BRAKE ACTUATOR ASSEMBLY |
|
3. |
CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH ASSEMBLY - BRAKE ACTUATOR ASSEMBLY) |
(a) Make sure that there is no looseness at the locking part and the connecting part of the connector.
OK:
The connector is securely connected.
(b) Disconnect the A151 skid control ECU (brake actuator assembly) connector.
(c) Disconnect the A53 stop light switch assembly connector.
(d) Check both the connector case and the terminals for deformation and corrosion.
OK:
No deformation or corrosion.
(e) 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 |
OK | ![]() |
REPLACE STOP LIGHT SWITCH ASSEMBLY |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
4. |
CHECK DTC |
(a) Read the DTCs using the GTS.
Chassis > Brake/EPB > Trouble Codes
Result |
Proceed to |
---|---|
C117B62 and C05401C, C054028, C054029, C054031, C054049 and/or C054096 are output simultaneously |
A |
C117B62 is output |
B |
A | ![]() |
REPAIR CIRCUITS INDICATED BY OUTPUT DTCS |
B | ![]() |
GO TO BRAKE SYSTEM Refer to "Brake drag" of problem symptoms table. Inspect brake system: Click here
Inspect brake pedal free play: Click here
|