Pressure Sensor System Inspection

FRONT PRESSURE INSPECTION PROCEDURE

1. DISPLAY SELF DIAGNOSIS RESULTS 

   Check self-diagnosis results.

   SELF-DIAGNOSIS RESULTS CHART
   
   

   Self-diagnosis results
   PRESS SEN CIRCUIT

   Is the above displayed in the self-diagnosis display items?

   YES or NO 

   YES: GO TO 2.

   NO: Inspection End.

2. CONNECTOR INSPECTION 
   1. Turn the ignition switch OFF.
   2. Disconnect the front pressure sensor connector E31 and ABS actuator and electric unit (control unit) connector E125 and inspect the terminals for deformation, disconnection, looseness, or damage.

   OK or NG 

   OK: GO TO 3.

   NG: Repair connector.

3. FRONT PRESSURE SENSOR CIRCUIT INSPECTION 
   1. Measure the continuity between the ABS actuator and electric unit (control unit) harness connector E125 and front pressure sensor harness connector E31.
      TERMINALS CONTINUITY CHART
      
      

      ABS actuator and electric unit (control unit) harness connector E125	Front pressure sensor harness connector E31	Continuity
      18	3	Yes
      19	1
      20	2

   2. Measure the continuity between the ABS actuator and electric unit (control unit) harness connector E125 and body ground.
      TERMINALS CONTINUITY CHART
      
      

      ABS actuator and electric unit (control unit) harness connector E125	Body ground	Continuity
      18	-	No
      19
      20

   OK or NG 

   OK: GO TO 4.

   NG: Repair or replace harness or connector.

4. FRONT PRESSURE SENSOR INSPECTION 
   1. Reconnect the front pressure sensor and ABS actuator and electric unit (control unit) connectors.
   2. Use "DATA MONITOR" to check if the status of "PRESS SENSOR" is normal.
      DATA MONITOR REFERENCE CHART
      
      

      Condition	Data monitor display (Approx.)
      	PRESS SENSOR
      When brake pedal is depressed	Positive value
      When brake pedal is released	0 bar

   OK or NG 

   OK: Inspection End.

   NG: Replace front pressure sensor.

REAR PRESSURE INSPECTION PROCEDURE

1. DISPLAY SELF DIAGNOSIS RESULTS 

   Check self-diagnosis results.

   SELF-DIAGNOSIS RESULTS CHART
   
   

   Self-diagnosis results
   PRESS SEN CIRCUIT

   Is the above displayed in the self-diagnosis display items?

   YES or NO 

   YES: GO TO 2.

   NO: Inspection End.

2. CONNECTOR INSPECTION 
   1. Turn the ignition switch OFF.
   2. Disconnect the rear pressure sensor connector E32 and ABS actuator and electric unit (control unit) connector E125 and inspect the terminals for deformation, disconnection, looseness, or damage.

   OK or NG 

   OK: GO TO 3.

   NG: Repair connector.

3. REAR PRESSURE SENSOR CIRCUIT INSPECTION 
   1. Measure the continuity between the ABS actuator and electric unit (control unit) connector E125 and rear pressure sensor connector E32.
      TERMINALS CONTINUITY CHART
      
      

      ABS actuator and electric unit (control unit) connector E125	Rear pressure sensor connector E32	Continuity
      21	1	Yes
      22	3
      23	2

   2. Measure the continuity between the ABS actuator and electric unit (control unit) connector E125 and body ground.
      TERMINALS CONTINUITY CHART
      
      

      ABS actuator and electric unit (control unit) connector E125	Body ground	Continuity
      21	-	No
      22
      23

   OK or NG 

   OK: GO TO 4.

   NG: Repair or replace harness or connector.

4. REAR PRESSURE SENSOR INSPECTION 
   1. Reconnect the rear pressure sensor and ABS actuator and electric unit (control unit) connectors.
   2. Use "DATA MONITOR" to check if the status of "PRESS SEN2" is normal.
      DATA MONITOR REFERENCE CHART
      
      

      Condition	Data monitor display (Approx.)
      	PRESS SEN2
      When brake pedal is depressed	Positive value
      When brake pedal is released	0 bar

   OK or NG 

   OK: Inspection End.

   NG: Replace rear pressure sensor. Refer to "WITH ABS ".