Power Window Serial Link Check Front LH and RH

WARNING: This page is about a different car, the 2008 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

CHECK BUS OUTPUT SIGNAL

With CONSULT-III

Check door lock and unlock switch ("LOCK SW DR/AS", "UNLK SW DR/AS") in DATA MONITOR mode for "REMOTE KEYLESS ENTRY SYSTEM" with CONSULT-III.

When door lock and unlock switch is turned to LOCK
LOCK SW DR/AS: ON
When door lock and unlock switch is turned to UNLOCK
UNLK SW DR/AS: ON

Without CONSULT-III

Remove key from ignition switch and close driver side and passenger side doors.
Check the signal between BCM connector and ground with oscilloscope when door lock and unlock switch (front LH and front RH) is turned "LOCK" or "UNLOCK".

Make sure signals which are shown in Fig 1 can be detected during 10 second just after door lock and unlock switch (front LH and front RH) is turned "LOCK" or "UNLOCK".

CONNECTOR TERMINALS CONDITION REFERENCE CHART

Connector	Terminals		Signal
Connector	(+)	(-)	Signal
M18	22	Ground	Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 1: 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 with CONSULT-III.

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

OK or NG

OK: Further inspection is necessary. Refer to SYMPTOM CHART .

NG: Replace BCM. Refer to "BCM ".
CHECK POWER WINDOW SWITCH GROUND
1. Turn ignition switch OFF.
2. Disconnect main power window and door lock/unlock switch and power window and door lock/unlock switch RH.
3. Check continuity between main power window and door lock/unlock switch connector D8 terminal 17 and ground.
  17 - Ground: Continuity should exist.
  
  Fig 2: Checking Continuity Between Main Power Window And Door Lock/Unlock Switch Connector D8 Terminal 17 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
4. Check continuity between power window and door lock/unlock switch RH connector D105 terminal 11 and ground.
  11 - Ground: Continuity should exist.
Fig 3: Checking Continuity Between Power Window And Door Lock/Unlock Switch Connector Terminal 11 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: GO TO 4.

NG: Repair or replace harness.
CHECK BUS CIRCUIT
1. Disconnect BCM.
2. Check continuity between BCM connector M18 terminal 22 and main power window and door lock/unlock switch connector D7 terminal 14.
  22 - 14: Continuity should exist.
  
  Fig 4: Checking Continuity Between BCM And Main Power Window And Door Lock/Unlock Switch Connector Terminal
  Courtesy of NISSAN MOTOR CO., U.S.A.
3. Check continuity between BCM connector M18 terminal 22 and power window and door lock/unlock switch RH connector D105 terminal 16.
  22 - 16: Continuity should exist.
Fig 5: Checking Continuity Between BCM And Power Window And Door Lock/Unlock Switch RH Connector Terminal
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: Replace main power window and door lock/unlock switch or power window and door lock/unlock switch RH. Refer to "FRONT DOOR ".

NG: Repair or replace harness.