Automatic Drive Positioner (DTC/Circuit Diagnosis)

1. Turn ignition switch ON.
2. Read voltage signal between driver seat control unit harness connector B222 and ground with oscilloscope.

   (+)		(-)	Condition		Voltage signal
   Driver seat control unit
   Connector	Terminal
   B222	29	Ground	Seat lifting (rear)	Operate	Courtesy of NISSAN NORTH AMERICA, INC.
   				Other than above	0 V or 5 V

Is the inspection result normal?

YES

Replace driver seat control unit. Refer to Removal and Installation .

NO

GO TO STEP 2  .

1. Turn ignition switch OFF.
2. Disconnect driver seat control unit and lifting motor LH (rear).
3. Check the continuity between driver seat control unit harness connector B222 and lifting motor LH (rear) harness connector B228.

   Driver seat control unit		Lifting motor LH (rear)		Continuity
   Connector	Terminal	Connector	Terminal
   B222	29	B228	1	Yes

4. Check the continuity between driver seat control unit harness connector B222 and ground.

   Driver seat control unit		Ground	Continuity
   Connector	Terminal
   B222	29		No

Is the inspection result normal?

YES

GO TO STEP 3 

NO

Repair or replace harness.

1. Connect driver seat control unit.
2. Turn ignition switch ON.
3. Check the voltage between lifting motor LH (rear) harness connector B228 and ground.

   (+)		(-)	Voltage (Approx.)
   Lifting motor LH (rear)
   Connector	Terminal
   B228	3	Ground	Battery voltage

Is the inspection result normal?

YES

GO TO STEP 5 

NO

GO TO STEP 4 

1. Turn ignition switch OFF.
2. Disconnect driver seat control unit.
3. Check the continuity between driver seat control unit harness connector B222 and lifting motor LH (rear) harness connector B228.

   Driver seat control unit		Lifting motor LH (rear)		Continuity
   Connector	Terminal	Connector	Terminal
   B222	5	B228	3	Yes

4. Check the continuity between driver seat control unit harness connector B222 and ground.

   Driver seat control unit		Ground	Continuity
   Connector	Terminal
   B222	5		No

Is the inspection result normal?

YES

Replace driver seat control unit. Refer to Removal and Installation .

NO

Repair or replace harness.

1. Turn ignition switch OFF.
2. Check the continuity between lifting motor LH (rear) harness connector B228 and ground.

   Lifting motor LH (rear)		Ground	Continuity
   Connector	Terminal
   B228	2		Yes

Is the inspection result normal?

YES

Replace lifting motor LH (rear). Refer to Removal and Installation .

NO

Repair or replace harness.