DTC C1246/46: Master Cylinder Pressure Sensor Malfunction; DTC C1281/81: Master Cylinder Pressure Sensor Output Malfunction (Test Mode DTC); DTC C1364/61: Wheel Cylinder Pressure Sensor Malfunction: Description
The master cylinder pressure sensor and wheel cylinder pressure sensor are built into the brake actuator. These sensors measure the master cylinder pressure and wheel cylinder pressure and send the data to the skid control ECU.
DTC C1281/81 will be cleared when the master cylinder pressure sensor sends a master cylinder pressure signal or when Test Mode ends. DTC C1281/81 is output only in Test Mode.
| DTC Code | INF Code | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| C1246/46 | 191 | Sensor power source 1 (VCM) voltage is 4.7 V or less or 5.3 V or more for at least 0.05 seconds. |
|
| ↑ | 192 | Master cylinder pressure sensor output voltage 1 (PMC1) is less than 0.25 V or 4.53 V or more for at least 0.05 seconds. |
|
| ↑ | 194 | Sensor power source 2 (VCM2) voltage is 4.7 V or less or 5.3 V or more for at least 0.05 seconds. |
|
| ↑ | 195 | Master cylinder pressure sensor output voltage 2 (PMC2) is less than 0.25 V or 4.53 V or more for at least 0.05 seconds. |
|
| ↑ | 197 | Master cylinder pressure sensor output voltage 1 (PMC1) is abnormal. |
|
| ↑ | 198 | Master cylinder pressure sensor output voltage 2 (PMC2) is abnormal. | ↑ |
| ↑ | 199 | Master cylinder pressure sensor output voltage 1 (PMC1) is less than 0.33 V or 0.85 V or more when not braking. |
|
| ↑ | 200 | Master cylinder pressure sensor output voltage 2 (PMC2) is less than 0.33 V or 0.85 V or more when not braking. | ↑ |
| ↑ | 201 | PMC1 and PMC2 voltages are different. | ↑ |
| ↑ | 202 | Condition that output voltages of front wheel cylinder pressure sensor RH (PFR) and rear wheel cylinder pressure sensor LH (PRL) are less than 0.25 V or 4.53 V or more continues for 0.05 seconds or more. |
|
| ↑ | 205 | Condition that output voltage of front wheel cylinder pressure sensor LH (PFL) is less than 0.25 V or 4.53 V or more and rear wheel cylinder pressure sensor RH (PRR) is less than 0.25 V or 4.53 V or more continues for 0.05 seconds or more. | ↑ |
| C1364/61 | 221 | Sensor power source 1 (VCM) voltage is 4.7 V or less or 5.3 V or more for at least 0.05 seconds. |
|
| ↑ | 222 | Front wheel cylinder pressure sensor RH output voltage (PFR) is 0.25 V or less or 4.53 V or more for at least 0.05 seconds. |
|
| ↑ | 224 | Either of the following is detected:
|
↑ |
| ↑ | 225 | The front wheel cylinder pressure sensor RH output (PFR) output voltage is stuck at 4.53 V or less. | ↑ |
| ↑ | 227 | Sensor power source 2 (VCM2) voltage is 4.7 V or less or 5.3 V or more for at least 0.05 seconds. |
|
| ↑ | 228 | Front wheel cylinder pressure sensor LH output voltage (PFL) is 0.25 V or less or 4.53 V or more for at least 0.05 seconds. |
|
| ↑ | 230 | Either of the following is detected:
|
↑ |
| ↑ | 231 | The front wheel cylinder pressure sensor LH output (PFL) output voltage is stuck at 4.53 V or less. | ↑ |
| ↑ | 233 | Sensor power source 2 (VCM2) voltage is 4.7 V or less or 5.3 V or more for at least 0.05 seconds. |
|
| ↑ | 234 | Rear wheel cylinder pressure sensor RH output voltage (PRR) is 0.25 V or less or 4.53 V or more for at least 0.05 seconds. |
|
| ↑ | 236 | Either of the following is detected:
|
↑ |
| ↑ | 237 | The rear wheel cylinder pressure sensor RH output (PRR) output voltage is stuck at 4.53 V or less. | ↑ |
| ↑ | 239 | Sensor power source 1 (VCM) voltage is 4.7 V or less or 5.3 V or more for at least 0.05 seconds. |
|
| ↑ | 240 | Rear wheel cylinder pressure sensor LH output voltage (PRL) is 0.25 V or less or 4.53 V or more for at least 0.05 seconds. |
|
| ↑ | 242 | Either of the following is detected:
|
↑ |
| ↑ | 243 | The rear wheel cylinder pressure sensor LH output (PRL) output voltage is stuck at 4.53 V or less. | ↑ |
| C1281/81 | - | Detected only during Test Mode. |
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