Combination Switch Inspection According to Self-Diagnostic Results

WARNING: This page is about a different car, the 2003 Nissan Altima. However, it is still accessible from the selected car via links, so may be relevant.

SELF-DIAGNOSTIC RESULT CHECK
1. Connect to CONSULT-II, and select "BCM" on "SELECTSYSTEM" screen.
2. Select "BCM control unit" on "SELECT WORK ITEM" screen, and select "SELF-DIAG RESULTS".
3. Check display content in self-diagnostic results.
  
  Fig 1: Checking Self-Diagnostic Result
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Display content
1. No malfunction : Inspection End
2. Malfunction in diagnosis system : GO TO 2.
3. Malfunction in headlamp switch system : Replace lamp switch.
HARNESS INSPECTION
1. Disconnect BCM connector and combination switch connector.
2. Check continuity between BCM harness connector of applicable malfunctioning system and combination switch connector terminals.
  
  Fig 2: Terminal And Continuity
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 3: Checking Continuity Between BCM Harness Connector And Combination Switch Connector Terminals
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK: GO TO 3.
2. NG: Check harness between BCM and combination switch for open or short circuit.
INSPECTION OF BCM INPUT TERMINAL VOLTAGE
Connect BCM connector, and check BCM input terminal voltage of applicable malfunctioning system.

Fig 4: BCM Input Terminal Voltage
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 5: Checking BCM Input Terminal Voltage Of Applicable Malfunctioning System
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
1. OK: GO TO 4.
2. NG: Replace BCM.
BCM OUTPUT TERMINAL INSPECTION
Connect combination switch connector, and check BCM output terminal voltage waveform of applicable malfunctioning system.

Fig 6: BCM Output Terminal Specification
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 7: Checking BCM Output Terminal Voltage Waveform Of Applicable Malfunctioning System
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
1. OK: Combination switch malfunction, go to 5.
2. NG: Replace BCM.
COMBINATION SWITCH INSPECTION
Following the table below, check switches by procedure of appropriate malfunctioning system.

Fig 8: Combination Switch Specification
Courtesy of NISSAN MOTOR CO., U.S.A.
1. : Inspection End