DTC C1365/54: Accumulator Pressure Sensor Malfunction [10/2014 - ]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Select the Data List on the Techstream (Refer to DATA LIST / ACTIVE TEST [10/2014 - 10/2015] or DATA LIST / ACTIVE TEST [10/2015 - ] ).
   ABS/VSC/TRAC
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Accumulator Sensor	Accumulator pressure sensor / Min.: 0.00 V, Max.: 5.00 V	Specified value: 2.90 to 4.20 V	When brake fluid is stored in the accumulator: Accumulator pressure changes in accordance with volume of fluid stored in the accumulator

4. Wait for 30 seconds without depressing the brake pedal.
5. Check that the accumulator pressure sensor output value change is within the specified range.

   OK

   Accumulator pressure sensor output value change is less than 0.55 V.

Result: 

NG 

REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY 

(Refer to REMOVAL [10/2014 - ] )

Result: 

OK 

See step  2

1. Turn the power switch off.
2. Clear the DTCs (Refer to DTC CHECK / CLEAR [10/2014 - ] ).
3. Perform a road test.
4. Check if the same DTC is output (Refer to DTC CHECK / CLEAR [10/2014 - ] ).

   Result

   Result	Proceed to
   DTC C1365/54 is not output.	A
   DTC C1365/54 is output.	B

Result: 

A 

USE SIMULATION METHOD TO CHECK 

(Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2014 - 10/2015] or HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - ] )

Result: 

B 

REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY 

(Refer to REMOVAL [10/2014 - ] )