Rear Lifting Switch Circuit Inspection

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 FUNCTION

With CONSULT-III

With "LIFT RR SW-UP, LIFT RR SW-DN" on the DATA MONITOR, operate the rear lifting switch to check ON/OFF operation.

LIFT RR SW MONITOR ITEM CHART

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

Without CONSULT-III

Turn ignition switch OFF.

Check voltage between driver seat control unit connector and ground.

DRIVER SEAT CONTROL UNIT CONNECTOR AND GROUND

Connector	Terminals		Condition	Voltage (V) (Approx.)
Connector	(+)	(-)	Condition	Voltage (V) (Approx.)
B401	14	Ground	Rear lifting switch ON (DOWN operation)	0
	14		Other than above	Battery voltage
	29		Rear lifting switch ON (UP operation)	0
	29		Other than above	Battery voltage

Fig 1: Checking Voltage Between Driver Seat Control Unit Connector And Ground

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

OK or NG

OK: Rear seat lifting switch circuit is OK.

NG: GO TO 2.

CHECK POWER SEAT SWITCH HARNESS CONTINUITY
1. Disconnect driver seat control unit and power seat switch LH.
2. Check continuity between driver seat control unit connector B401 (A) terminals 14, 29 and power seat switch LH connector B408 (B) terminals 2, 6.
  14 - 2: Continuity should exist.
  
  29 - 6: Continuity should exist.
3. Check continuity between driver seat control unit connector B401 (A) terminals 14, 29 and ground.
  14 - Ground: Continuity should not exist.
  
  29 - Ground: Continuity should not exist.
Fig 2: Checking Continuity Between Driver Seat Control Unit Terminals And Power Seat Switch LH Terminals
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: GO TO 3.

NG: Repair or replace harness.

CHECK REAR LIFTING SWITCH

Check continuity between power seat switch LH terminals as follows.

REAR LIFTING SWITCH

Terminals		Condition	Continuity
2	7	Rear lifting switch ON (DOWN operation)	Yes
2		Other than above	No
6		Rear lifting switch ON (UP operation)	Yes
6		Other than above	No

Fig 3: 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. Refer to "FRONT SEAT ".