A/T Device (Detention Switch) Circuit Check

1. CHECK FUNCTION 

   With CONSULT-II 

   Check that when the A/T selector lever is in P position, "DETENT SW" on the DATA MONITOR becomes OFF.

   MONITOR ITEM CONTENTS
   
   

   Monitor item [OPERATION or UNIT]		Contents
   Detention SW	"ON/OFF"	The selector lever position "P position (OFF)/other than P position (ON)" judged from the detention switch signal is displayed.

   Fig 1: CONSULT II DATA MONITOR Screen

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

   Without CONSULT-II 

   1. Turn ignition switch OFF.
   2. Check voltage between driver seat control unit connector and ground.
   DRIVER SEAT CONTROL UNIT CONNECTOR AND GROUND VOLTAGE
   
   

   Driver seat control unit connector	Terminal		Condition of A/T selector lever	Voltage (V) (Approx.)
   	(+)	(-)
   M204	21	Ground	P position	0
   			Other than above	Battery voltage

   Fig 2: Identifying Voltage Between Driver Seat Control Unit Connector And Ground

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

   OK or NG 

   OK: A/T device (detention switch) circuit is OK.

   NG: GO TO 2.

2. CHECK A/T DEVICE (PARK POSITION SWITCH) HARNESS 
   1. Turn ignition switch OFF.
   2. Disconnect A/T device and driver seat control unit connector.
   3. Check continuity between A/T device connector and driver seat control unit connector.
      A/T DEVICE CONNECTOR AND DRIVER SEAT CONTROL UNIT CONNECTOR CONTINUITY
      
      

      A		B		Continuity
      Driver seat control unit connector	Terminal	A/T device connector	Terminal
      M204	21	M133	10	Yes

   4. Check continuity between driver seat control unit connector and ground.
      DRIVER SEAT CONTROL UNIT CONNECTOR AND GROUND CONTINUITY
      
      

      Driver seat control unit connector	Terminal	Ground	Continuity
      M204	21		No

      Fig 3: Identifying Continuity Between A/T Device Connector And Driver Seat Control Unit Connector

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

   OK or NG 

   OK: GO TO 3.

   NG: Repair or replace harness.

3. CHECK PARK POSITION SWITCH 

   Check continuity between A/T device (detention switch) as follows.

   A/T DEVICE (DETENTION SWITCH) CONTINUITY
   
   

   A/T device	Terminals		Condition	Continuity
   M133	9	10	P position	Yes
   			Other than P position	No

   Fig 4: Identifying Continuity Between A/T Device (Detention Switch)

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

OK or NG 

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

NG: Replace A/T device.