DTC C1142

INSPECTION PROCEDURE

1. CHECK SELF-DIAGNOSTIC RESULTS 

   Check the self-diagnostic results.

   SELF-DIAGNOSTIC RESULTS CHART
   
   

   Self-diagnostic results
   PRESS SEN CIRCUIT

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

   YES : GO TO 2.

   NO : INSPECTION END

2. CHECK CONNECTOR 
   1. Disconnect pressure sensor connector and ABS actuator and electric unit (control unit) connector, check terminals for deformation, disconnection, looseness, and so on. If any malfunction is found, repair or replace terminal.
   2. Reconnect connectors and perform ABS actuator and electric unit (control unit) self-diagnosis again.

   OK or NG 

   OK : Connector terminal contact is loose, damaged, open or shorted.

   NG : GO TO 3.

3. CHECK PRESSURE SENSOR HARNESS 
   1. Turn ignition switch OFF and disconnect pressure sensor connector E53 and ABS actuator and electric unit (control unit) connector E56.
   2. Check continuity between ABS actuator and electric unit (control unit) harness connector and pressure sensor harness connector.
      PRESSURE SENSOR SPECIFICATION
      
      

      ABS actuator and electric unit (control unit)	Pressure sensor	Continuity
      19	1	Yes
      20	2
      18	3

      Fig 1: Checking Continuity Between ABS Actuator And Electric Unit Connector And Pressure Sensor Harness Connector

      Courtesy of NISSAN MOTOR CO., U.S.A.

   OK or NG 

   OK : GO TO 4.

   NG : If the open or short in harness, repair or replace harness.

4. CHECK PRESSURE SENSOR 
   1. Connect pressure sensor connector and ABS actuator and electric unit (control unit) connector.
   2. Use CONSULT-II "DATA MONITOR" to check pressure sensor value.

      Condition Data monitor display 

      When brake pedal is depressed. : Positive value 

      When brake pedal is released. : Approx. 0 bar 

   OK or NG 

   OK : INSPECTION END

   NG : Pressure sensor is damaged or malfunctioning, replace pressure sensor.