Nissan GT-R (R35) · Service Manual BODY EXTERIOR, DOORS, ROOF & VEHICLE SECURITY

B2603 SHIFT POSITION STATUS

INTELLIGENT KEY SYSTEM

B2603

Description


BCM confirms the shift position with the following 4 signals.
  • Shift lever
  • P/N position switch (TCM)
  • P position signal from IPDM E/R (CAN)
  • P position signal from TCM (CAN)

DTC Logic

 
 DTC DETECTION LOGIC

NOTE：
  • If DTC B2603 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to DTC Logic.
  • If DTC B2603 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to DTC Logic.
  • If DTC B2603 is displayed with DTC B210F for IPDM E/R, first perform the trouble diagnosis for DTC B210F. Refer to DTC Logic.
  • If DTC B2603 is displayed with DTC B2601 for IPDM E/R, first perform the trouble diagnosis for DTC B2601. Refer to DTC Logic.

DTC
 		Self-diagnosis name
 		DTC detecting condition
 		Possible causes
B2603
 		SHIFT POSI STATUS
 		BCM detects the followings status for 500 ms or more when shift is in P position, and ignition switch is in the ON position.
  • P/N position signal (from TCM): approx. 0 V
  • Control device (detention switch): approx. 0 V
  • Harness or connector
    (Control device circuit is open or shorted)
  • Harness or connectors
    [TCM circuit is open or shorted]
  • TCM
  • BCM

 
 DTC CONFIRMATION PROCEDURE

 
 1.PERFORM DTC CONFIRMATION PROCEDURE

Diagnosis Procedure


 
 1.CHECK DTC WITH TCM
 
 2.CHECK TCM CIRCUIT
 
 3.CHECK TCM OUTPUT