Nissan GT-R (R35) · Service Manual ENGINE

P1239, P2135 TP SENSOR

VR38

P1239 P2135

Description


Electric throttle control actuator consists of throttle control motor, throttle position sensor, etc. The throttle position sensor responds to the throttle valve movement.

PBIB0145E.JPG
The throttle position sensor has two sensors. These sensors are a kind of potentiometers which transform the throttle valve position into output voltage, and emit the voltage signal to the ECM. In addition, these sensors detect the opening and closing speed of the throttle valve and feed the voltage signals to the ECM. The ECM judges the current opening angle of the throttle valve from these signals and the ECM controls the throttle control motor to make the throttle valve opening angle properly in response to driving condition.

DTC Logic

 
 DTC DETECTION LOGIC

NOTE：
 If DTC P1239 or P2135 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to DTC Logic (GT-R certified NISSAN dealer).

DTC No.
 		Trouble diagnosis name
 		DTC detecting condition
 		Possible cause
P1239
 		Throttle position sensor (bank 2) circuit range/performance
 		Rationally incorrect voltage is sent to ECM compared with the signals from TP sensor 1 and TP sensor 2.
  • Harness or connector
    (TP sensor 1 and 2 circuit is open or shorted.)
  • Electric throttle control actuator
    (TP sensor 1 and 2)
P2135
 		Throttle position sensor (bank 1) circuit range/performance

 
 DTC CONFIRMATION PROCEDURE

 
 1.PRECONDITIONING
 
 2.PERFORM DTC CONFIRMATION PROCEDURE

Diagnosis Procedure


 
 1.CHECK GROUND CONNECTION
 
 2.CHECK THROTTLE POSITION SENSOR POWER SUPPLY CIRCUIT-I
 
 3.CHECK THROTTLE POSITION SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
 
 4.CHECK THROTTLE POSITION SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
 
 5.CHECK THROTTLE POSITION SENSOR
 
 6.REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
 
 7.CHECK INTERMITTENT INCIDENT

Component Inspection


 
 1.CHECK THROTTLE POSITION SENSOR
 
 2.REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

Special Repair Requirement


 
 1.PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
 
 2.PERFORM IDLE AIR VOLUME LEARNING