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	13	Ground	Seat reclining	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 reclining motor LH.
3. Check continuity between driver seat control unit harness connector B222 and reclining motor LH harness connector B225.

   Driver seat control unit		Reclining motor LH		Continuity
   Connector	Terminal	Connector	Terminal
   B222	13	B225	1	Yes

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

   Driver seat control unit		Ground	Continuity
   Connector	Terminal
   B222	13		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 voltage between reclining motor LH harness connector B225 and ground.

   (+)		(-)	Voltage (Approx.)
   Reclining motor LH
   Connector	Terminal
   B225	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 continuity between driver seat control unit harness connector B222 and reclining motor LH harness connector B225.

   Driver seat control unit		Reclining motor LH		Continuity
   Connector	Terminal	Connector	Terminal
   B222	5	B225	3	Yes

4. Check 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 continuity between reclining motor LH harness connector B225 and ground.

   Reclining motor LH		Ground	Continuity
   Connector	Terminal
   B225	2		Yes

Is the inspection result normal?

YES

Replace reclining motor LH. Refer to Removal and Installation .

NO

Repair or replace harness.