Nissan GT-R (R35) · Service Manual ENGINE

P1290, P2100, P2103 THROTTLE CONTROL MOTOR RELAY

VR38

P1290 P2100 P2103

Description


Power supply for the throttle control motor is provided to the ECM via throttle control motor relay. The throttle control motor relay is ON/OFF controlled by the ECM. When the ignition switch is turned ON, the ECM sends an ON signal to throttle control motor relay and battery voltage is provided to the ECM. When the ignition switch is turned OFF, the ECM sends an OFF signal to throttle control motor relay and battery voltage is not provided to the ECM.

DTC Logic

 
 DTC DETECTION LOGIC

DTC No.
 		Trouble diagnosis name
 		DTC detecting condition
 		Possible cause
P1290
 		Throttle control motor relay circuit open (bank 2)
 		ECM detects a voltage of power source for throttle control motor is excessively low.
  • Harness or connectors
    (Throttle control motor relay circuit is open)
  • Throttle control motor relay
P2100
 		Throttle control motor relay circuit open (bank 1)
P2103
 		Throttle control motor relay circuit short
 		ECM detect the throttle control motor relay is stuck ON.
  • Harness or connectors
    (Throttle control motor relay circuit is shorted)
  • Throttle control motor relay

 
 DTC CONFIRMATION PROCEDURE

 
 1.PRECONDITIONING
 
 2.PERFORM DTC CONFIRMATION PROCEDURE FOR DTC P1290 and P2100
 
 3.PERFORM DTC CONFIRMATION PROCEDURE FOR DTC P2103

Diagnosis Procedure


 
 1.CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT
 
 2.DETECT MALFUNCTIONING PART
 
 3.CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT
 
 4.DETECT MALFUNCTIONING PART
 
 5.CHECK FUSE
 
 6.CHECK INTERMITTENT INCIDENT