Diagnosis Procedure

WARNING: This page is about a different car, the 2020 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.

CHECK SECTOR GEAR POSITION LIMIT SWITCH (DRIVER SIDE) INPUT SIGNAL

Turn the ignition switch OFF.
Disconnect sector gear position limit switch (driver side) connector.
Check voltage between sector gear position limit switch (driver side) connector and ground.

(+)		(-)	Voltage (V)
Sector gear position limit switch (driver side)
Connector	Terminal
B420	1	Ground	Battery voltage

NOTE: It is not low electric power consumption mode.

Is the inspection result normal?

YES

GO TO 3.

GO TO 2.

CHECK SECTOR GEAR POSITION LIMIT SWITCH (DRIVER SIDE) SIGNAL CIRCUIT

Disconnect seatback power return control unit connector B414.

Check continuity between seatback power return control unit harness connector and sector gear position limit switch (driver side) harness connector.

Seatback power return control unit		Sector gear position limit switch (driver side)		Continuity
Connector	Terminal	Connector	Terminal	Continuity
B414	20	B420	1	Yes

Check continuity between seatback power return control unit harness connector and ground.

Seatback power return control unit		Ground	Continuity
Connector	Terminal
B414	20		No

Is the inspection result normal?

YES

Replace seatback power return control unit. Refer to Removal and Installation .

Repair or replace harness.

CHECK SECTOR GEAR POSITION LIMIT SWITCH (DRIVER SIDE) GROUND CIRCUIT

Disconnect seatback power return control unit connector B414 and seatback angle limit switch (driver side) connector.

Check continuity between seatback power return control unit harness connector and sector gear position limit switch (driver side) harness connector.

Seatback power return control unit		Sector gear position limit switch (driver side)		Continuity
Connector	Terminal	Connector	Terminal	Continuity
B414	26	B420	2	Yes

Check continuity between seatback power return control unit harness connector and ground.

Seatback power return control unit		Ground	Continuity
Connector	Terminal
B414	26		No

Is the inspection result normal?

YES

GO TO 4.

Repair or replace harness.

CHECK SECTOR GEAR POSITION LIMIT SWITCH (DRIVER SIDE)
Check sector gear position limit switch (driver side).

Refer to Component Inspection .

Is the inspection result normal?

YES

GO TO 5.

NO

Replace sector gear position limit switch (driver side). Refer to Exploded View .
CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident .

Inspection End.