Lifting Switch (Front) 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 FUNCTION

With CONSULT-II

With "LIFT FR SW-UP, LIFT FR SW-DN" on the DATA MONITOR, operate the lifting switch (front) to check ON/OFF operation.

LIFTING SWITCH (FRONT) OPERATION REFERENCE

Monitor item [OPERATION or UNIT]		Contents
LIFT FR SW-DN	"ON/OFF"	ON / OFF status judged from the FR lifter switch (DOWN) signal is displayed.
LIFT FR SW-UP	"ON/OFF"	ON / OFF status judged from the FR lifter switch (UP) signal is displayed.

Fig 1: CONSULT-II - Identifying "LIFT FR SW-UP" And "LIFT FR SW-DN" On DATA MONITOR

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

Without CONSULT-II

Turn ignition switch OFF.
Check voltage between driver seat control unit connector and ground.

Fig 2: Driver Seat Control Unit Connector P2 Terminals 13 And 28 Voltage Specifications

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

Fig 3: Checking Voltage Between Driver Seat Control Unit Connector And Ground

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

OK or NG

OK: Lifting switch (front) circuit is OK.
NG: GO TO 2.

CHECK LIFTING SWITCH (FRONT) CIRCUIT HARNESS CONTINUITY
1. Disconnect driver seat control unit and power seat switch LH.
2. Check continuity between driver seat control unit connector P2 terminals 13, 28 and power seat switch LH connector P2 terminals 5, 6.
  - 13 (L/B) - 5 (L/B): Continuity should exist.
  - 28 (Y/B) - 6 (Y/B): Continuity should exist.
3. Check continuity between driver seat control unit connector P2 terminals 13, 28 and ground
  - 13 (L/B) - Ground: Continuity should not exist.
  - 28 (Y/B) - Ground: Continuity should not exist.
OK or NG
- OK: GO TO 3.
- NG: Repair or replace harness.
Fig 4: Checking Continuity Between Driver Seat Control Unit Connector P2 Terminals 13, 28 And Power Seat Switch LH Connector P2 Terminals 5 And 6
Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK LIFTING SWITCH (FRONT)
Check continuity between power seat switch LH as follows.

Fig 5: Power Seat Switch LH Connector P8 Terminals 5, 6 And 3 Continuity Specifications
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 6: Checking Continuity Between Power Seat Switch LH Terminals
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
- OK: Check the condition of the harness and connector.
- NG: Replace power seat switch LH.