BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS ELECTRONICALLY CONTROLLED BRAKE SYSTEM(for HEV Model) C127A11 Electronic Brake Booster Input Stroke Sensor "A" Circuit Short to Ground C127A15 Electronic Brake Booster Input Stroke Sensor "A" Circuit Short to Battery or Open C127A16 Electronic Brake Booster Input Stroke Sensor "A" Circuit Voltage Below Threshold C127A17 Electronic Brake Booster Input Stroke Sensor "A" Circuit Voltage Above Threshold C127A23 Electronic Brake Booster Input Stroke Sensor "A" Signal Stuck Low C127A24 Electronic Brake Booster Input Stroke Sensor "A" Signal Stuck High C127A64 Electronic Brake Booster Input Stroke Sensor "A" Signal Plausibility Failure C127A86 Electronic Brake Booster Input Stroke Sensor "A" Signal (some circuit quantity, reported via serial data) Invalid C127A96 Electronic Brake Booster Input Stroke Sensor "A" Component Internal Failure C127F1C Electronic Brake Booster Input Stroke Sensor Supply Voltage Circuit Voltage Out of Range C128A11 Electronic Brake Booster Input Stroke Sensor "B" Circuit Short to Ground C128A15 Electronic Brake Booster Input Stroke Sensor "B" Circuit Short to Battery or Open C128A64 Electronic Brake Booster Input Stroke Sensor "B" Signal Plausibility Failure C128F64 Electronic Brake Booster Input Stroke Sensor "A" / "B" Signal Plausibility Failure
DESCRIPTION
The relative displacement sensor is built into the brake booster with master cylinder assembly.
When the relative displacement sensor inside the electric brake booster (brake booster with master cylinder assembly) meets the detection conditions, this DTC is stored.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | DTC Output from | Note |
|---|---|---|---|---|---|---|
| C127A11 | Electronic Brake Booster Input Stroke Sensor "A" Circuit Short to Ground | Open in relative displacement sensor (brake booster with master cylinder assembly) signal circuit for 0.1 seconds or more. | ·
Wire harness or connector ·
Brake booster with master cylinder assembly |
Comes on | Brake Booster | ·
SAE Code: C127C ·
Output ECU: Electric brake booster (brake booster with master cylinder assembly) |
| C127A15 | Electronic Brake Booster Input Stroke Sensor "A" Circuit Short to Battery or Open | Short in relative displacement sensor (brake booster with master cylinder assembly) signal circuit for 0.1 seconds or more. | ·
Wire harness or connector ·
Brake booster with master cylinder assembly |
Comes on | Brake Booster | ·
SAE Code: C127D ·
Output ECU: Electric brake booster (brake booster with master cylinder assembly) |
| C127A16 | Electronic Brake Booster Input Stroke Sensor "A" Circuit Voltage Below Threshold | Relative displacement sensor (brake booster with master cylinder assembly) output value is -3.9 mm or less for 0.2 seconds or more. | ·
Wire harness or connector ·
Brake booster with master cylinder assembly |
Comes on | Brake Booster | ·
SAE Code: C127B (Case 4, 7) ·
Output ECU: Electric brake booster (brake booster with master cylinder assembly) |
| C127A17 | Electronic Brake Booster Input Stroke Sensor "A" Circuit Voltage Above Threshold | Relative displacement sensor (brake booster with master cylinder assembly) output value is 3.4 mm or more for 0.2 seconds or more. | ·
Wire harness or connector ·
Brake booster with master cylinder assembly |
Comes on | Brake Booster | ·
SAE Code: C127B (Case 2, 6) ·
Output ECU: Electric brake booster (brake booster with master cylinder assembly) |
| C127A23 | Electronic Brake Booster Input Stroke Sensor "A" Signal Stuck Low | Relative displacement sensor (brake booster with master cylinder assembly) output value is less than 0.6 mm for 0.3 seconds or more. | ·
Wire harness or connector ·
Brake booster with master cylinder assembly |
Comes on | Brake Booster | ·
SAE Code: C127B (Case 3) ·
Output ECU: Electric brake booster (brake booster with master cylinder assembly) |
| C127A24 | Electronic Brake Booster Input Stroke Sensor "A" Signal Stuck High | While driving at a vehicle speed of 3 km/h (2 mph) or more, the brake pedal stroke distance is between 0.6 mm and 1.5 mm for 60 seconds or more. | ·
Wire harness or connector ·
Brake booster with master cylinder assembly |
Comes on | Brake Booster | ·
SAE Code: C127B (Case 1 and 5) ·
Output ECU: Electric brake booster (brake booster with master cylinder assembly) |
| C127A64 | Electronic Brake Booster Input Stroke Sensor "A" Signal Plausibility Failure | Relative displacement sensor (brake booster with master cylinder assembly) output signal interrupted for 0.1 seconds or more. | ·
Wire harness or connector ·
Brake booster with master cylinder assembly |
Comes on | Brake Booster | ·
SAE Code: C127B (Case 8) ·
Output ECU: Electric brake booster (brake booster with master cylinder assembly) |
| C127A86 | Electronic Brake Booster Input Stroke Sensor "A" Signal (some circuit quantity, reported via serial data) Invalid | Relative displacement sensor (brake booster with master cylinder assembly) malfunction is detected for 1 second or more. | ·
Wire harness or connector ·
Brake booster with master cylinder assembly |
Comes on | Brake Booster | ·
SAE Code: C127A (Case 1) ·
Output ECU: Electric brake booster (brake booster with master cylinder assembly) |
| C127A96 | Electronic Brake Booster Input Stroke Sensor "A" Component Internal Failure | Relative displacement sensor (brake booster with master cylinder assembly) internal malfunction is detected for 0.1 seconds or more. | ·
Wire harness or connector ·
Brake booster with master cylinder assembly |
Comes on | Brake Booster | ·
SAE Code: C127A (Case 2) ·
Output ECU: Electric brake booster (brake booster with master cylinder assembly) |
| C127F1C | Electronic Brake Booster Input Stroke Sensor Supply Voltage Circuit Voltage Out of Range | Relative displacement sensor (brake booster with master cylinder assembly) power source voltage (VSK) is less than 4.8 V or more than 5.18 V for 0.08 seconds or more. | ·
Wire harness or connector ·
Brake booster with master cylinder assembly |
Comes on | Brake Booster | ·
SAE Code: C127F ·
Output ECU: Electric brake booster (brake booster with master cylinder assembly) |
| C128A11 | Electronic Brake Booster Input Stroke Sensor "B" Circuit Short to Ground | Open in relative displacement sensor (brake booster with master cylinder assembly) signal circuit for 0.2 seconds or more. | ·
Wire harness or connector ·
Brake booster with master cylinder assembly |
Comes on | Brake Booster | ·
SAE Code: C128C ·
Output ECU: Electric brake booster (brake booster with master cylinder assembly) |
| C128A15 | Electronic Brake Booster Input Stroke Sensor "B" Circuit Short to Battery or Open | Short in relative displacement sensor (brake booster with master cylinder assembly) signal circuit for 0.2 seconds or more. | ·
Wire harness or connector ·
Brake booster with master cylinder assembly |
Comes on | Brake Booster | ·
SAE Code: C128D ·
Output ECU: Electric brake booster (brake booster with master cylinder assembly) |
| C128A64 | Electronic Brake Booster Input Stroke Sensor "B" Signal Plausibility Failure | Relative displacement sensor (brake booster with master cylinder assembly) operation failure is detected for 0.2 seconds or more. | ·
Wire harness or connector ·
Brake booster with master cylinder assembly |
Comes on | Brake Booster | ·
SAE Code: C128B ·
Output ECU: Electric brake booster (brake booster with master cylinder assembly) |
| C128F64 | Electronic Brake Booster Input Stroke Sensor "A" / "B" Signal Plausibility Failure | Difference between change amounts of relative displacement sensor (brake booster with master cylinder assembly) output 1 (SKS1) and relative displacement sensor (brake booster with master cylinder assembly) output 2 (SKS2) is abnormally large for 0.2 seconds or more. | ·
Wire harness or connector ·
Brake booster with master cylinder assembly |
Comes on | Brake Booster | ·
SAE Code: C128F ·
Output ECU: Electric brake booster (brake booster with master cylinder 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.
Wait for 1 second or more. [*]
- 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 Booster / Utility / All Readiness.
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
PROCEDURE
Turn the ignition switch off.
Make sure that there is no looseness at the locking part and the connecting part of the connectors.
- OK:
The connector is securely connected.
Disconnect the A194 electric brake booster (brake booster with master cylinder assembly) connector.
Disconnect the A195 relative displacement sensor (brake booster with master cylinder 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 A194-19 (VSK) - A195-2 (VSK) Always Below 1 Ω A194-19 (VSK) or A195-2 (VSK) - Body ground and other terminals Always 10 kΩ or higher A194-6 (SKS1) - A195-1 (SKS1) Always Below 1 Ω A194-6 (SKS1) or A195-1 (SKS1) - Body ground and other terminals Always 10 kΩ or higher A194-7 (SKS2) - A195-3 (SKS2) Always Below 1 Ω A194-7 (SKS2) or A195-3 (SKS2) - Body ground and other terminals Always 10 kΩ or higher A194-25 (SKG) - A195-4 (SKG) Always Below 1 Ω A194-25 (SKG) or A195-4 (SKG) - Body ground and other terminals Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG