Nissan GT-R (R35) · Service Manual ENGINE

P1263, P2263 TC SYSTEM

VR38

P1263 P2263

DTC Logic

 
 DTC DETECTION LOGIC

NOTE：
 If DTC P1263 or P2263 is displayed with DTC P0237, P0238, P0241 or P0242, first perform the trouble diagnosis for DTC P0237, P0238, P0241 or P0242. Refer to DTC Logic (GT-R certified NISSAN dealer).

DTC No.
 		Trouble diagnosis name
 		DTC detecting condition
 		Possible cause
P2263
 		Turbocharger boost system performance (bank 1)
 		In spite of the boosting area, the boost does not increase.
  • Intake air leaks
  • Exhaust gas leaks
  • Turbocharger boost sensor
  • Turbocharger boost control solenoid valve
  • Recirculation valve
  • Exhaust manifold and turbocharger assembly
P1263
 		Turbocharger boost system performance (bank 2)

 
 DTC CONFIRMATION PROCEDURE

 
 1.PERFORM COMPONENT FUNCTION CHECK

Component Function Check


 
 1.PERFORM COMPONENT FUNCTION CHECK-I
 
 2.PERFORM COMPONENT FUNCTION CHECK-II

Diagnosis Procedure


 
 1.CHECK FOR EXHAUST GAS LEAK
 
 2.CHECK FOR INTAKE AIR LEAK
 
 3.CHECK RECIRCULATION VALVE
 
 4.CHECK TURBOCHARGER BOOST CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT
 
 5.DETECT MALFUNCTIONING PART
 
 6.CHECK TURBOCHARGER BOOST CONTROL SOLENOID VALVE OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
 
 7.CHECK TURBOCHARGER BOOST CONTROL SOLENOID VALVE
 
 8.CHECK BOOST CONTROL ACTUATOR
 
 9.CHECK TURBOCHARGER BOOST SENSOR
 
 10.CHECK INTERMITTENT INCIDENT