Nissan GT-R (R35) · Service Manual TRANSMISSION & DRIVELINE

P0872, P0873 LINE PRESSURE SENSOR

TRANSMISSION: GR6Z30A

P0872 P0873

Description


  • The line pressure sensor is installed on the actuator control module and detects the line pressure.
  • The line pressure sensor converts the line pressure into output voltage and transmits the signal to TCM. TCM uses this signal in calculations for control switching or other functions.
  • The line pressure sensor output voltage varies depending on the pressure variations. The voltage increases as the pressure increases.

DTC Logic

 
 DTC DETECTION LOGIC

NOTE：
 If DTC P0700 is detected, first diagnose the DTC P0700. Refer to DTC Logic (GT-R certified NISSAN dealer).

DTC
 		Self-diagnosis name
 		DTC detection condition
 		Possible cause
P0872
 		Line pressure sensor voltage system Low
 		A DTC is set if the line pressure sensor voltage value received by TCM is less than 90 mV.
  • Line pressure sensor
  • Harness or connector
    (Open in the line pressure sensor circuit)
P0873
 		Line pressure sensor voltage system High
 		A DTC is set if the line pressure sensor voltage value received by TCM is more than 4,700 mV.
  • Line pressure sensor
  • Harness or connector
    (Short in the line pressure sensor circuit)

 
 DTC CONFIRMATION PROCEDURE

 
 1.PREPARATION BEFORE OPERATION (PART 1)
 
 2.PREPARATION BEFORE OPERATION (PART 2)
 
 3.PERFORM DTC CONFIRMATION PROCEDURE

Diagnosis Procedure


 
 1.CHECK GROUND CONNECTION
 
 2.CHECK TCM OUTPUT SIGNAL CIRCUIT
 
 3.CHECK TCM INPUT SIGNAL CIRCUIT
 
 4.CHECK INTERMITTENT INCIDENT
 
 5.CHECK HARNESS BETWEEN TCM AND TRANSMISSION (LINE PRESSURE SENSOR) (PART 1)
 
 6.CHECK HARNESS BETWEEN TCM AND TRANSMISSION (LINE PRESSURE SENSOR) (PART 2)
 
 7.CHECK INTERMITTENT INCIDENT