DESCRIPTION
The motor relay is built into the brake booster with master cylinder assembly.
The electric brake booster (brake booster with master cylinder assembly) turns the motor relay on to operate the motor in the brake booster with master cylinder assembly in accordance with the operation angle of the brake pedal by the driver.
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
MIL |
DTC Output from |
Note |
---|---|---|---|---|---|---|
C12BF49 |
Electronic Brake Booster Motor "A" Drive Circuit Internal Electronic Failure |
Motor relay drive circuit abnormality detected. |
Electric brake booster (brake booster with master cylinder assembly) |
Comes on |
Brake Booster |
|
C12BF87 |
Electronic Brake Booster Motor "A" Drive Circuit Missing Message |
Motor relay drive circuit abnormality detected. |
Electric brake booster (brake booster with master cylinder assembly) |
Comes on |
Brake Booster |
|
C12BF96 |
Electronic Brake Booster Motor "A" Drive Circuit Component Internal Failure |
Motor relay internal abnormality detected. |
Electric brake booster (brake booster with master cylinder assembly) |
Comes on |
Brake Booster |
|
C12BF9E |
Electronic Brake Booster Motor "A" Drive Circuit Stuck On |
Motor relay drive circuit low voltage detected. |
Electric brake booster (brake booster with master cylinder assembly) |
Comes on |
Brake Booster |
|
MONITOR DESCRIPTION
C12BF (Case 1, 2 and 6):MONITOR STRATEGY
Related DTCs |
C12BF (Case 1): Motor drive circuit start up test C12BF (Case 2): Motor drive circuit unsupported configuration monitor C12BF (Case 3): Motor drive circuit internal failure monitor C12BF (Case 4): Motor drive circuit FET monitor C12BF (Case 5): Motor drive circuit unavailable C12BF (Case 6): Motor drive circuit FET failure detection circuit test C12BF (Case 7): Motor drive circuit phase short circuit test and monitor C12BF (Case 8): Motor drive circuit initial test timeout monitor C12BF (Case 9): Motor drive circuit serial peripheral interface communication monitor |
Required Sensors/Components(Main) |
Electric brake booster (brake booster with master cylinder assembly) |
Required Sensors/Components(Related) |
Electric brake booster (brake booster with master cylinder assembly) |
Frequency of Operation |
During initial checking |
Duration |
-: C12BF (Case 1, 3, 4, 6) 0.01 seconds: C12BF (Case 2 and 9) 0.03 seconds: C12BF (Case 7) 0.1 seconds: C12BF (Case 5) 0.505 seconds: C12BF (Case 8) |
MIL Operation |
Immediately |
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:
[*1] to [*2]: Normal judgment procedure.
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
HINT:
PROCEDURE
1. |
REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY |
Click here
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END |