Seat Memory Switch Circuit Check

Check function .

With CONSULT-II

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

SEAT MEMORY SWITCH CIRCUIT CHECK

Monitor Item [OPERATION Or UNIT]	Parameter	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.

Fig 1: Identifying DATA MONITOR Display Screen

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

Without CONSULT-II

GO TO NEXT STEP.
OK or NG
1. OK: Seat memory switch circuit is OK.
2. NG: GO TO NEXT STEP.

Check seat memory switch .
1. Turn ignition switch OFF.
2. Disconnect seat memory switch and lumbar support switch connector.
3. Check continuity between seat memory switch and lumbar support switch connector B158 terminal 22, 34, 35 and 61.
  
  Fig 2: Displaying Seat Memory Switch & Lumbar Support Switch Connector & Terminals Check Table
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK: GO TO NEXT STEP.
2. NG: Replace seat memory switch and lumbar support switch.
  
  Fig 3: Checking Continuity Between Seat Memory Switch & Lumbar Support Switch Connector Terminals
  Courtesy of NISSAN MOTOR CO., U.S.A.
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 and lumbar support switch connector B158 terminals 22, 34, 35.
  1. 22 (L/G) - 22 (L/G): Continuity should exist .
  2. 34 (L/W) - 34 (L/W): Continuity should exist .
  3. 35 (L/B) - 35 (L/B): Continuity should exist .
  Fig 4: Checking Continuity Between Driver Seat Control Unit & Seat Memory Switch & Lumbar Support Switch
  Courtesy of NISSAN MOTOR CO., U.S.A.
3. Check continuity between automatic drive positioner control unit connector M152 terminals 22, 34, 35 and ground.
  1. 22 (L/G) - Ground: Continuity should not exist .
  2. 34 (L/W) - Ground: Continuity should not exist .
  3. 35 (L/B) - Ground: Continuity should not exist .
OK or NG
1. OK: GO TO NEXT STEP.
2. NG: Repair or replace harness between driver seat control unit and seat memory switch and lumbar support switch.
Check seat memory switch and lumbar support switch ground circuit .
Check continuity between seat memory switch and lumbar support switch B158 terminal 61 and ground.

61 (B/Y) - Ground: Continuity should exist.

OK or NG
1. OK: Replace driver seat control unit.
2. NG: Repair or replace harness between seat memory switch and lumbar support switch and ground.
  
  Fig 5: Checking Continuity Between Seat Memory Switch & Lumbar Support Switch & Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.