Door Lock and Unlock Switch Check

WARNING: This page is about a different car, the 2005 Nissan 350Z. However, it is still accessible from the selected car via links, so may be relevant.

CHECK POWER WINDOW OPERATION
Does power window system operate normally?

YES or NO?
- YES : GO TO 2
- NO : Refer to "TROUBLE DIAGNOSES SYMPTOM CHART ".
CHECK DOOR LOCK AND UNLOCK SWITCH OUTPUT SIGNAL
With CONSULT-II

Check door lock and unlock switch ("LOCK SW DR/AS", "UNLK SW DR/AS") in DATA MONITOR mode with CONSULT-II. Refer to "DATA MONITOR ".
- When door lock and unlock switch is turned to LOCK
  - CDL LOCK SW :ON
- When door lock and unlock switch is turned to UNLOCK
  - CDL UNLOCK SW :ON
Fig 1: Scan Tool Display "Data Monitor"
Courtesy of NISSAN MOTOR CO., U.S.A.

Without CONSULT-II
1. Remove key from ignition switch, and close the doors of driver side and passenger side.
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 door lock and unlock switch (driver side or passenger side) is turned "LOCK" or "UNLOCK".
Fig 2: BCM Connector Terminal 22 & Ground Signal Specifications Table
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 3: BCM Connector Terminal 22 & Ground Signal Test
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
- OK : GO TO 3.
- NG : GO TO 4.
CHECK BCM OUTPUT SIGNAL
Check power window serial link ("POWER WINDOW DOWN") in "ACTIVE TEST" mode with CONSULT-II. Refer to "ACTIVE TEST ".

When "ACTIVE TEST" is executed, the window of driver side and passenger side are go down.

OK or NG
- OK : Further inspection is necessary. Refer to SYMPTOM CHART .
- NG : Replace BCM.
Fig 4: Scan Tool Display "Active Test"
Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK DOOR LOCK AND UNLOCK SWITCH GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect power window main switch (door lock and unlock switch) and power window sub-switch (door lock and unlock switch) connector.
3. Check continuity between power window main switch (door lock and unlock switch) harness connector D7 terminal 15 and ground.
  - 15 (B) - Ground : Continuity should exist.
  Fig 5: Power Window Main Switch (Door Lock & Unlock Switch) Harness Connector D7 Terminal 15 & Ground Continuity Test
  Courtesy of NISSAN MOTOR CO., U.S.A.
4. Check continuity between power window sub-switch (door lock and unlock switch) harness connector D37 terminal 11 and ground.
  - 11 (B) - Ground : Continuity should exist.
Fig 6: Power Window Sub-Switch (Door Lock & Unlock Switch) Harness Connector D37 Terminal 11 & Ground Continuity Test
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
- OK : GO TO 5.
- NG : Repair or replace harness.
CHECK POWER WINDOW SERIAL LINK CIRCUIT
1. Disconnect BCM connector.
2. Check continuity between BCM harness connector M90 terminal 22 and power window main switch (door lock and unlock switch) harness connector D7 terminal 12.
  - 22 (Y) - 12 (PU) : Continuity should exist.
  Fig 7: BCM Harness Connector M90 Terminal 22 & Power Window Main Switch Harness Connector D7 Terminal 12 Continuity Test
  Courtesy of NISSAN MOTOR CO., U.S.A.
3. Check continuity between BCM harness connector M90 terminal 22 and power window sub-switch (door lock and unlock switch) harness connector D37 terminal 16.
  - 22 (Y) - 16 (SB) : Continuity should exist.
Fig 8: BCM Harness Connector M90 Terminal 22 & Power Window Sub-Switch Harness Connector D37 Terminal 16 Continuity Test
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
- OK : Replace power window main switch.
- NG : Repair or replace harness.