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Home >> Scion >> 2004 >> xB Standard >> Repair and Diagnosis >> Brakes >> Anti-Lock Brakes >> Abs With EBD & BA & TRAC & VSC System - Diagnosis >> DTC C1246/46: Malfunction In Master Cylinder Pressure Sensor >> Circuit Description

Circuit Description

Master cylinder pressure sensor is connected to the skid control ECU in the actuator.

DTC C1246/46 REFERENCE

DTC No. DTC Detecting Condition Trouble Area
C1246/46
  • When the vehicle speed is 7 km/h (4 mph) or more and PMC terminal voltage of skid control ECU exceeds 0.86 V, the condition that the voltage does not change by 0.005 V or more continues for 30 sec.
  • Noise in terminal PMC of skid control ECU occurs 7 times or more within 5 sec.
  • When the stop lamp switch is OFF, the condition that PMC terminal voltage of skid control ECU is 0.86 V or more, or less than 0.3 V continues for 5 sec. or more.
  • When IG1 terminal voltage is 9.5 to 17.2 V, the condition that the VCM terminal voltage of skid control ECU is out of the range from 4.4 to 5.6 V continues for 1.2 sec. or more.
  • When VCM terminal voltage of skid control ECU is 4.4 to 5.6 V, the condition that the PMC terminal voltage of skid control ECU is out of the range from 0.14 to 4.85 V continues for 1.2 sec. or more.
  • Master cylinder pressure sensor
  • Master cylinder pressure sensor circuit