Combination Switch Inspection According To Self-Diagnostic Results

WARNING: This page is about a different car, the 2003 Infiniti G35. 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 "SELECT SYSTEM" 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: Self-Diagnostic Result Check Table Of BCM
  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 Lighting switch.
HARNESS INSPECTION
1. Disconnect BCM connector and combination switch connector.
2. Check continuity between BCM harness connector of suspect system and combination switch connector terminals.
  
  Fig 2: Continuity Checking Table Of BCM Connector And Combination Switch Connector
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 3: Checking Continuity Between BCM Connector And Combination Switch Connector
  Courtesy of NISSAN MOTOR CO., U.S.A.
  - Refer to SYSTEM WIRING DIAGRAMS .
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 suspect system.

Fig 4: Voltage Checking Table Of BCM Input Terminal And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 5: Checking BCM Input Terminal Voltage Of Suspect System
Courtesy of NISSAN MOTOR CO., U.S.A.
- Refer to SYSTEM WIRING DIAGRAMS .
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: Voltage Table Of BCM Output Terminal
Courtesy of NISSAN MOTOR CO., U.S.A.
- Refer to SYSTEM WIRING DIAGRAMS .
OK or NG
1. OK : Combination switch malfunction, go to 5.
2. NG : Replace BCM.
Fig 7: Checking BCM Output Terminal Voltage Waveform Of Applicable Malfunctioning System
Courtesy of NISSAN MOTOR CO., U.S.A.
COMBINATION SWITCH INSPECTION
Following the table below, check switches by procedure of appropriate malfunctioning system.

Fig 8: Malfunctioning System Procedure Table Of Combination Switches
Courtesy of NISSAN MOTOR CO., U.S.A.
1. Inspection End