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 [08/2013 - ]: Procedure

1. Check the protrusion of the rod. Refer to INSTALLATION [08/2013 - ] .

   OK

   Stop light switch assembly is installed properly.

   HINT: 

   If the stop light switch assembly is not installed properly, adjust the protrusion of the rod before proceeding to the next step.

NG → See step   8 

OK: Go to next step 

1. Mount a pedal effort gauge and install LSPV gauges to the rear wheels. Refer to ON-VEHICLE INSPECTION [08/2013 - ] .
2. Connect the Techstream to the DLC3.
3. Turn the power switch on (IG).
4. Select the Data List on the Techstream. Refer to DATA LIST / ACTIVE TEST [08/2013 - ] .
   ABS/VSC/TRAC
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Regulator Pressure Sensor Output	Regulator pressure sensor output / Min.: 0.00 V, Max.: 5.00 V	When brake pedal released: 0.10 to 0.90 V	Reading increases when brake pedal is depressed

5. Check the output value of the regulator pressure sensor as the brake pedal is depressed.

   Standard Voltage

   Brake Effort (N (kgf, lbf))	Regulator Pressure Sensor Output (V)	Rear Right Wheel Hydraulic Pressure (MPa (kgf/cm2 , psi))	Rear Left Wheel Hydraulic Pressure (MPa (kgf/cm2 , psi))
   100 (10, 22.5)	1.32 to 2.12	3.98 to 7.98 (40.6 to 81.3, 578 to 1157)	3.98 to 7.98 (40.6 to 81.3, 578 to 1157)
   200 (20, 45.0)	2.90 to 3.70	11.72 to 15.72 (119.6 to 160.2, 1700 to 2280)	11.72 to 15.72 (119.6 to 160.2, 1700 to 2280)

NG → See step   6 

OK: Go to next step 

1. Install LSPV gauges to the front wheels. Refer to ON-VEHICLE INSPECTION [08/2013 - ] .
2. Select the Data List on the Techstream. Refer to DATA LIST / ACTIVE TEST [08/2013 - ] .
   ABS/VSC/TRAC
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Wheel Cylinder Pressure Sensor	Wheel cylinder pressure sensor / Min.: 0.00 V, Max.: 5.00 V	When brake pedal released: 0.10 to 0.90 V	Reading increases when brake pedal is depressed

3. Check the output value of the wheel cylinder pressure sensor at each hydraulic pressure during electronically controlled brake system control.

   Standard Voltage

   for Front Wheel Cylinder LH 

   for Front Wheel Cylinder RH 

   Hydraulic Pressure (MPa (kgf/cm2 , psi))	Wheel Cylinder Pressure Sensor (V)
   2.0 (20.4, 290)	0.53 to 1.33
   5.0 (51.0, 725)	1.12 to 1.92
   7.0 (71.4, 1015)	1.52 to 2.32
   10.0 (102.0, 1451)	2.14 to 2.94

   Hydraulic Pressure (MPa (kgf/cm2 , psi))	Wheel Cylinder Pressure Sensor (V)
   2.0 (20.4, 290)	0.53 to 1.33
   5.0 (51.0, 725)	1.12 to 1.92
   7.0 (71.4, 1015)	1.52 to 2.32
   10.0 (102.0, 1451)	2.14 to 2.94

NG → See step   6 

OK: Go to next step 

1. Mount a pedal effort gauge and install LSPV gauges to the front and rear wheels. Refer to ON-VEHICLE INSPECTION [08/2013 - ] .
2. Select the Data List on the Techstream. Refer to DATA LIST / ACTIVE TEST [08/2013 - ] .
   ABS/VSC/TRAC
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Stroke Sensor	Brake pedal stroke sensor assembly / Min.: 0.00 V, Max.: 5.00 V	When brake pedal released: 0.65 to 1.35 V	Reading increases when brake pedal is depressed
   Stroke Sensor2	Brake pedal stroke sensor assembly 2 / Min.: 0.00 V, Max.: 5.00 V	When brake pedal released: 3.65 to 4.35 V	Reading decreases when brake pedal is depressed
   Regulator Pressure Sensor Output	Regulator pressure sensor output / Min.: 0.00 V, Max.: 5.00 V	When brake pedal released: 0.10 to 0.90 V	Reading increases when brake pedal is depressed
   Wheel Cylinder Pressure Sensor	Wheel cylinder pressure sensor / Min.: 0.00 V, Max.: 5.00 V	When brake pedal released: 0.10 to 0.90 V	Reading increases when brake pedal is depressed

3. Check the output value of the brake pedal stroke sensor assembly as the brake pedal is depressed.

   Standard Voltage

   Brake Effort (N (kgf, lbf))	Stroke Sensor (V)	Stroke Sensor2 (V)	Regulator Pressure Sensor Output (V)	Wheel Cylinder Pressure Sensor (V)
   100 (10, 22.5)	1.65 to 2.35	2.65 to 3.35	1.32 to 2.12	1.14 to 1.94
   200 (20, 45.0)	2.38 to 3.08	1.92 to 2.62	2.90 to 3.70	2.49 to 3.29

NG → See step   9 

OK: Go to next step 

1. Turn the power switch off.
2. Clear the DTCs. Refer to DTC CHECK / CLEAR [08/2013 - ] .
3. Perform a road test.
4. Check if the same DTC is output. Refer to DTC CHECK / CLEAR [08/2013 - ] .

   Result

   Result	Proceed to
   DTCs C1246/46 and C1364/61 are not output.	A
   DTCs C1246/46 and/or C1364/61 are output.	B

B → See step   6 

A → See step   7