Check Seat Memory Switch Circuit

1. CHECK FUNCTION (WITH CONSULT-II) 

   With CONSULT-II 

   With "SET SW, MEMORY SW1, MEMORY SW2" on the DATA MONITOR, operate the switch to check ON/OFF operation.

   Fig 1: Identifying CONSULT II Display - DATA MONITOR

   Courtesy of NISSAN MOTOR CO., U.S.A.
   SET SW, MEMORY SW1, MEMORY SW2 (WITH CONSULT-II)
   
   

   Monitor item [OPERATION or UNIT]		Contents
   MEMORY SW1	"ON/OFF"	ON/OFF status judged from the seat memory switch 1 signal is displayed.
   MEMORY SW2	"ON/OFF"	ON/OFF status judged from the seat memory switch 2 signal is displayed.
   SET SW	"ON/OFF"	ON/OFF status judged from the setting switch signal is displayed.

   OK or NG 

   OK: Seat memory switch circuit is OK.

   NG: GO TO 2.

2. CHECK SEAT MEMORY SWITCH 
   1. Turn ignition switch OFF.
   2. Disconnect seat memory switch connector.
   3. Check continuity between seat memory switch connector D22 terminal 1, 2, 3 and 4.
   Fig 2: Identifying Continuity Between Seat Memory Switch
   Courtesy of NISSAN MOTOR CO., U.S.A.
   SEAT MEMORY SWITCH
   
   

   Connector	Terminals		Condition	Continuity
   D22	1	4	Memory switch 1: ON	Yes
   			Memory switch 1: OFF	No
   	2		Memory switch 2: ON	Yes
   			Memory switch 2: OFF	No
   	3		Set switch: ON	Yes
   			Set switch: OFF	No

   OK or NG 

   OK: GO TO 3.

   NG: Replace seat memory switch.

3. CHECK HARNESS CONTINUITY 
   1. Disconnect driver seat control unit connector.
   2. Check continuity between driver seat control unit connector B152 terminals 22, 34, 35 and seat memory switch connector D22 terminals 1, 2, 3.

      22 (R/B) - 1 (P) : Continuity should exist. 

      34 (L/W) - 3 (GY) : Continuity should exist. 

      35 (L/B) - 2 (LG) : Continuity should exist. 

   3. Check continuity between driver seat control unit connector B152 terminals 22, 34, 35 and ground.

      22 (R/B) - Ground : Continuity should not exist. 

      34 (L/W) - Ground : Continuity should not exist. 

      35 (L/B) - Ground : Continuity should not exist. 

      Fig 3: Identifying Continuity Between Driver Seat Control Unit Connector B152 Terminals 22, 34, 35 And Ground

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

   OK or NG 

   OK: GO TO 4.

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

4. CHECK SEAT MEMORY SWITCH GROUND CIRCUIT 

   Check continuity between seat memory switch connector D22 terminal 4 and ground.

   4 (B) - Ground : Continuity should exist. 

   Fig 4: Identifying Continuity Between Seat Memory Switch Connector D22 Terminal 4 And Ground

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

OK or NG 

OK: Replace driver seat control unit.

NG: Repair or replace harness between seat memory switch and ground.