Check Seatback Switch Signal

WARNING: This page is about a different car, the 2006 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.

CHECK SEATBACK SWITCH SIGNAL

Check voltage between driver seat control unit connector B353 terminal 41 and ground.

VOLTAGE CHECK TABLE

Connector	Terminal		Condition	Voltage (V) (Approx.)
Connector	(+)	(-)	Condition	Voltage (V) (Approx.)
B353	41 (L)	Ground	Seatback fold down	0
B353	41 (L)	Ground	Other than above	5

OK or NG

OK: Seatback switch signal is OK.

NG: GO TO 2.

Fig 1: Checking Continuity Between Sliding Limit Switch Connector Terminal And Ground

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

CHECK HARNESS CONTINUITY
1. Disconnect driver seat control unit and seatback switch connector.
2. Check continuity between driver seat control unit connector B353 terminal 41 and seatback switch connector B348 terminal 1.
  41 (L) - 1 (L): Continuity should exist .
OK or NG

OK: GO TO 3.

NG: Repair or replace harness between driver seat control unit and seatback switch.

Fig 2: Checking Continuity Between Driver Seat Control Unit And Seatback Switch Connector Terminals
Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK SEATBACK SWITCH CIRCUIT
Check continuity between seatback switch connector B348 terminal 2 and ground.

2 (B) - Ground: Continuity should exist .

OK or NG

OK : GO TO 4.

NG: Repair or replace harness.

Fig 3: Checking Continuity Between Seatback Switch Connector Terminal 2 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

CHECK SEATBACK SWITCH

Check continuity between seatback switch connector B348 terminals 1 and 2.

CONTINUITY CHECK TABLE

Connector	Terminal		Condition	Continuity
B348	1	2	When seatback switch forward	Yes
B348	1	2	Other than above	No

OK or NG

OK: Check the condition of the harness and the connector.

NG: Replace seatback switch.

Fig 4: Checking Continuity Between Seatback Switch Connector Terminals 1 And 2

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