All Function Fails To Operate

DIAGNOSIS PROCEDURE CHART

Step	Check	Yes	No
1 CHECK SEAT FUNCTION . Operate each power seat switch and check that each power seat function operates normally.	Does all function fails to operate?	Go to step 2 .	Check the motor which does not operate. Refer to SOME OF THE MOTORS DO NOT OPERATE (DRIVER'S SEAT) , INSPECTION, Power Seat System.
2 CHECK FUSE . Check the power seat fuse inside the fuse box.	Is the fuse blown out?	Replace the appropriate fuse.	Go to step 3 .
3 CHECK POWER SUPPLY CIRCUIT . Disconnect the connectors of the power seat switch and lumbar switch. Measure the voltage between harness connector and chassis ground. Connector & terminal (R190) No. 7 (+) - Chassis ground (-): (R195) No. 1 (+) - Chassis ground (-):	Is the voltage 10 V or more?	Go to step 4 .	Check body harness.
4 CHECK POWER SUPPLY CIRCUIT . Measure the resistance between the power seat switch and lumbar switch harness connectors and chassis ground. Connector & terminal (R190) No. 8 - Chassis ground: (R195) No. 2 - Chassis ground:	Is the resistance less than 10 Ω?	Replace the faulty switch assembly.	Check body harness.