2004 Nissan-Datsun Sentra SE-RFACTORY OEM SERVICE PROCEDURE

Check Key Switch Input Signal

WARNING: This page is about a different car, the 2004 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

With CONSULT-II

Check key switch "KEY ON SW" in DATA MONITOR mode with CONSULT-II. Refer to DATA MONITOR .

  • When key is inserted to ignition key cylinder:
    1. KEY ON SW: ON 
  • When key is removed from ignition key cylinder:
    1. KEY ON SW: OFF 
Fig 1: Checking Key Switch Input Signal With CONSULT-II
G00341250Courtesy of NISSAN MOTOR CO., U.S.A.

Without CONSULT-II

Check voltage between BCM connector M18 terminal 37 and ground.

Fig 2: Connector Terminals Voltage Specifications (M 18)
G00341251Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG 

  1. OK >> Key switch circuit is OK.
  2. NG >> GO TO 2
Fig 3: Checking Key Switch Input Signal Without CONSULT-II
G00341252Courtesy of NISSAN MOTOR CO., U.S.A.
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