DRIVER SEAT CONTROL UNIT: Diagnosis Procedure

WARNING: This page is about a different car, the 2012 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Do not disconnect the battery negative terminal and the driver seat control unit connector until DTC is confirmed with CONSULT.

Regarding Wiring Diagram information, refer to "WIRING DIAGRAM ".

CHECK POWER SUPPLY CIRCUIT

Turn ignition switch OFF.

Check voltage between driver seat control unit harness connector and ground.

Terminals			Power source	Condition	Voltage (V) (Approx.)
(+)		(-)
Driver seat control unit connector	Terminal	(-)
B202	6	Ground	START power supply	Ignition switch START	Battery voltage
B203	33		Battery power supply	Ignition switch OFF
B203	40		Battery power supply	Ignition switch OFF

Fig 1: Checking Voltage Between Driver Seat Control Unit Connector B202, B203 And Ground

Courtesy of NISSAN NORTH AMERICA, INC.

Is the inspection result normal?

YES: GO TO 2.

NO: Check the following.

Repair or replace harness between driver seat control unit and fuse block (J/B).
Circuit breaker.

CHECK GROUND CIRCUIT

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

Driver seat control unit connector	Terminal	Ground	Continuity
B202	32		Yes
B203	48		Yes

Fig 2: Checking Continuity Between Driver Seat Control Unit Connector B202 Terminal 32, B203 Terminal 48 And Ground

Courtesy of NISSAN NORTH AMERICA, INC.

Is the inspection result normal?

YES: Driver seat control unit power supply and ground circuit are OK.

NO: Repair or replace harness.