Check Seat Memory Switch Circuit

CHECK FUNCTION

With CONSULT-II

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

MONITOR ITEM AND CONTENTS REFERENCE

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.

Fig 1: Display CONSULT II - Data Monitor Screen

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

Without CONSULT-II

Carry out "switch monitor" in the on-board diagnosis function, and operate "Setting switch, memory switch 1, memory switch 2" to check. Refer to "SWITCH MONITOR ".

OK or NG

OK : System is OK.
NG : GO TO 2.

CHECK SEAT MEMORY SWITCH

Turn ignition switch OFF.
Disconnect seat memory switch connector.

Check continuity between seat memory switch connector and ground.

CONNECTORS CONTINUITY REFERENCE

Connector	Terminals		Condition	Continuity
D3	3	4	Set switch: ON	Yes
	3		Set switch: OFF	No
	1		Memory switch 1 ON	Yes
	1		Memory switch 1: OFF	No
	2		Memory switch 2: ON	Yes
	2		Memory switch 2: OFF	No

Fig 2: Identifying Continuity Between Seat Memory Switch Connector And Ground

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

OK or NG

OK : GO TO 3.
NG : Replace seat memory switch.

CHECK HARNESS CONTINUITY
1. Disconnect BCM connector.
2. Check continuity between BCM connector M4 terminals 39, 43, 50 and seat memory switch connector D3 terminals 1, 2, 3.
  39 (G) - 1 (G) : Continuity should exist.
  
  43 (OR) - 2 (OR) : Continuity should exist.
  
  50 (R/Y) - 3 (R/Y) : Continuity should exist.
3. Check continuity between BCM connector M4 terminals 39, 43, 50 and ground.
  
  Fig 3: Identifying Continuity Between BCM Connector M4 Terminals 39, 43, 50 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  39 (G) - Ground : Continuity should not exist.
  
  43 (OR) - Ground : Continuity should not exist.
  
  50 (R/Y) - Ground : Continuity should not exist.
OK or NG
- OK : GO TO 4.
- NG : Repair or replace harness between BCM and seat memory switch.
CHECK SEAT MEMORY SWITCH GROUND CIRCUIT
Check continuity at harness between seat memory switch D3 terminal 4 and ground.

4 (B) - Ground : Continuity should exist.

OK or NG
- OK : Replace BCM.
- NG : Repair or replace harness between seat memory switch and ground.
  
  Fig 4: Identifying Continuity Between Seat Memory Switch D3 Terminal 4 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.