DTC C1246/46 Master Cylinder Pressure Sensor Malfunction; DTC C1281/81 Master Cylinder Pressure Sensor Output Malfunction (Test Mode DTC): Description
WARNING: This page is about a different car, the 2008 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.
The master cylinder pressure sensor is connected to the skid control ECU in the ABS and TRACTION actuator.
DTC C1281/81 can be detected when the master cylinder pressure sensor sends a master cylinder pressure signal or test mode ends. DTC C1281/81 is output only in test mode.
DTC DETECTION CONDITION AND TROUBLE AREA
| DTC No. |
DTC Detection Condition |
Trouble Area |
| C1246/46 |
When one of following conditions is met:
- At vehicle speed of 7 km/h (4.3 mph) or more, when PMC terminal voltage over 0.86 V, voltage does not change by 0.005 V or more for 30 seconds.
- Noise occurs in the PMC terminal 7 times or more within 5 seconds.
- When stop light switch OFF, PMC terminal voltage more than 0.86 V or less than 0.3 V for 5 seconds or more.
- With IG1 terminal voltage between 9.5 V and 18.5 V, VCM terminal voltage not between 4.4 V and 5.6 V for 1.2 seconds or more.
- When VCM terminal voltage between 4.8 V and 5.2 V, PCM terminal voltage not between 0.19 V and 4.57 V for 1.2 seconds or more.
|
- Master cylinder pressure sensor
- Master cylinder pressure sensor circuit
- Stop light switch circuit
- ABS and TRACTION actuator
|
| C1281/81 |
Detected only during test mode. |
- Master cylinder pressure sensor
- Master cylinder pressure sensor circuit
- Stop light switch circuit
- ABS and TRACTION actuator
|