Power Window Serial Link Check

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.

CHECK POWER WINDOW SWITCH OUTPUT SIGNAL
With CONSULT-II

Check door lock and unlock switch ("LOCK SW DR/AS", "UNLK SW DR/AS") in DATA MONITOR mode for "POWER DOOR LOCK SYSTEM" with CONSULT-II. Refer to DATA MONITOR .
- When door lock and unlock switch is turned to LOCK
  1. LOCK SW DR/AS: ON
- When door lock and unlock switch is turned to UNLOCK
  1. UNLK SW DR/AS: ON
  Fig 1: Data Monitor Mode Display For Power Door Lock System On CONSULT-II
  Courtesy of NISSAN MOTOR CO., U.S.A.
Without CONSULT-II
1. Remove key from ignition switch, and the door of driver side and passenger side is closed.
2. Check the signal between BCM connector and ground with oscilloscope when door lock and unlock switch (driver side and passenger side) is turned "LOCK" or "UNLOCK".
3. Make sure signals which are shown in the figure below can be detected during 10 second just after switch is turned "LOCK" or "UNLOCK".
  
  Fig 2: Door Lock And Unlock Switch (Driver Side And Passenger Side) Terminal Signal Chart
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 3: Checking Signal Between BCM Connector And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG

OK: GO TO 2.

NG: GO TO 3 .
CHECK BCM OUTPUT SIGNAL
Check power window serial link ("POWER WINDOW DOWN") in "ACTIVE TEST" mode for "REMOTE KEYLESS ENTRY SYSTEM" with CONSULT-II. Refer to CONSULT-II Application Items "MULTI REMOTE CONTENT" .

When "ACTIVE TEST" is executed, is the window of driver side and passenger side lowered.

Fig 4: Active Test Display On CONSULT-II
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: Further inspection is necessary. Refer to symptom chart.

NG: Replace BCM.
CHECK POWER WINDOW SWITCH GROUND CHECK
1. Turn ignition switch OFF.
2. Disconnect power window main switch and power window sub-switch connector.
3. Check continuity between power window main switch connector D7 terminals 15 and ground.
  1. 15 (B) - Ground: Continuity should exist.
  Fig 5: Checking Continuity Between Power Window Main Switch Connector (Terminals 15-Ground)
  Courtesy of NISSAN MOTOR CO., U.S.A.
4. Check Continuity Between Power Window sub-switch connector D43 terminal 11 and ground.
  1. 11 (B) - Ground: Continuity should exist.
  Fig 6: Checking Continuity Between Power Window sub-switch connector D43 (Terminal 11-Ground)
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG

OK: GO TO 4.

NG: Repair or replace harness.
CHECK POWER WINDOW SERIAL LINK CIRCUIT
1. Disconnect BCM connector.
2. Check continuity between BCM connector M3 terminal 74 and power window main switch connector D7 terminal 12.
  1. 74 (Y) - 12 (BR): Continuity should exist.
  Fig 7: Checking Power Window Serial Link Circuit (Terminal 74 - 12)
  Courtesy of NISSAN MOTOR CO., U.S.A.
3. Check continuity between BCM connector M3 terminal 74 and power window sub-switch connector D43 terminal 16.
  1. 74 (Y) - 16 (Y): Continuity should exist.
  Fig 8: Checking Power Window Serial Link Circuit (Terminal 74 - 16)
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG

OK: Replace power window main switch.

NG: Repair or replace harness.