Inspection Procedure

1. Clear the DTC (See DTC CHECK/CLEAR  ).
2. Turn the ignition switch off.
3. Depress the brake pedal more than 20 times.
4. Turn the ignition switch to ON.
5. Wait for 99 seconds.
6. Check if the same DTC is recorded (See DTC CHECK/CLEAR  ).

   Result 

   RESULT CHART
   
   

   Result	Proceed to
   DTC output	A
   DTC not output	B

B: END 

A: Go to next step 

1. Perform hydraulic brake booster on-vehicle inspection (See ON-VEHICLE INSPECTION ).

   OK: 

   Hydraulic circuit is normal (No leakage). 

NG: REPAIR HYDRAULIC CIRCUIT 

OK: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the tester on.
4. Select the following menu items: Chassis / ABS/VSC/ TRAC/ Data List

   DATA LIST: ABS/VSC/TRAC 

   ABS/VSC/TRAC DATA LIST REFERENCE
   
   

   Tester Display	Measurement Item / Range	Normal Condition	Diagnostic Note
   Accumulator Sensor	Accumulator pressure sensor reading / min.: 0 V, max.: 5 V	3.58 to 5 V	If value constant regardless of pump operation, accumulator pressure sensor malfunction suspected.

5. Check that the accumulator's output value is in the Normal Condition range.

   OK: 

   Accumulator pressure sensor value is in the Normal Condition. 

NG: REPLACE HYDRAULIC BRAKE BOOSTER  (See REMOVAL )

OK: Go to next step 

1. Clear the DTC (See DTC CHECK/CLEAR  ).
2. Check if the same DTC is recorded (See DTC CHECK/CLEAR  ).

   Result 

   RESULT CHART
   
   

   Result	Proceed to
   DTC output	A
   DTC not output	B

B: END 

A: REPLACE MASTER CYLINDER SOLENOID  (See DISASSEMBLY )