Lifting Motor (Rear) Circuit Inspection

WARNING: This page is about a different car, the 2005 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.

CHECK REAR SEAT LIFTING MECHANISM
Check the following.
- Operation malfunction caused by lifter mechanism deformation or pinched harness or other foreign materials
- Operation malfunction caused by foreign materials adhered to the lifting motor (rear) or lead screws
- Operation malfunction and interference with other parts by poor installation
OK or NG
- OK: GO TO 2.
- NG: Repair or replace the malfunctioning part and check again.

CHECK FUNCTION

With CONSULT-II

Check operation with "SEAT LIFTER RR" in ACTIVE TEST.

SEAT LIFTER RR TEST DESCRIPTION

Test item	Description
SEAT LIFTER RR	The lifting motor (rear) is activated by receiving the drive signal.

Without CONSULT-II

GO TO 3.

OK or NG

OK: Lifting motor (rear) circuit is OK.
NG: GO TO 3.

Fig 1: CONSULT-II - Identifying "SEAT LIFTER RR" In ACTIVE TEST

Courtesy of NISSAN MOTOR CO., U.S.A.

CHECK LIFTING MOTOR (REAR) CIRCUIT HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect driver seat control unit and lifting motor (rear).
3. Check continuity between driver seat control unit connector P3 terminals 38, 39 and lifting motor (rear) connector P7 terminals 4, 6.
  - 38 (B/W) - 6 (B/W): Continuity should exist.
  - 39 (Y) - 4 (Y): Continuity should exist.
4. Check continuity between driver seat control unit P3 terminals 38, 39 and ground.
  - 38 (B/W) - Ground: Continuity should not exist.
  - 39 (Y) - Ground: Continuity should not exist.
OK or NG
- OK: GO TO 4.
- NG: Repair or replace harness.
Fig 2: Checking Continuity Between Driver Seat Control Unit Connector P3 Terminals 38, 39 And Lifting Motor (Rear) Connector P7 Terminals 4 And 6
Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK DRIVER SEAT CONTROL UNIT OUTPUT SIGNAL
1. Connect the driver seat control unit and lifting motor (rear).
2. Check voltage between driver seat control unit connector and ground.
Fig 3: Driver Seat Control Unit Connector P3 Terminals 38 And 39 Voltage Specifications
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 4: Checking Voltage Between Driver Seat Control Unit Connector And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
- OK: Replace lifting motor (rear).
- NG: Replace driver seat control unit.