Diagnosis Procedure

CHECK SEAT MEMORY SWITCH SIGNAL

Turn Ignition Switch OFF.
Disconnect Driver Seat Control Unit connector.
Turn Ignition Switch ON.
Check voltage between Driver Seat Control Unit harness connector and ground.

(+)		(-)	Voltage (V) (Approx.)
Driver Seat Control Unit
Connector	Terminals
D5	1	Ground	5
	2
	3

Is the inspection result normal?

YES

GO TO 3.

NO

GO TO 2.

CHECK MEMORY SWITCH CIRCUIT

Turn Ignition Switch OFF.
Disconnect Seat Memory Switch connector.

Check continuity between Driver Seat Control Unit harness connector and Seat Memory Switch harness connector.

Driver Seat Control Unit		Seat Memory Switch		Continuity
Connector	Terminal	Connector	Terminal
B514	27	D5	1	Existed
	28		2
	29		3

Check continuity between Driver Seat Control Unit harness connector and ground.

Driver Seat Control Unit		Ground	Continuity
Connector	Terminal
B514	27		Not existed
	28
	29

Is the inspection result normal?

YES

Replace Driver Seat Control Unit. Refer to Removal and Installation .

NO

Repair or replace harness or connector.

CHECK MEMORY SWITCH GROUND CIRCUIT

Check continuity between Seat Memory Switch harness connector and ground.

Seat Memory Switch		Ground	Continuity
Connector	Terminal
D5	4		Existed

Is the inspection result normal?

YES

GO TO 4.

NO

Repair or replace harness or connector.

CHECK SEAT MEMORY SWITCH
Refer to Component Inspection .

Is the inspection result normal?

YES

GO TO 5.

NO

Replace Seat Memory Switch. Refer to Removal and Installation .
CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident .

INSPECTION END