Diagnosis Procedure
1.
CHECK FUSE
Ignition switch OFF.
Check that the following fuse is not blown (open).
Signal name
Fuse No.
Battery power supply
54 (20A)
Is the fuse blown (open)?
Replace the blown (open) fuse after repairing the affected circuit if a fuse is blown (open).
.
2.
CHECK BATTERY POWER SUPPLY VOLTAGE
Disconnect driver seat control unit connector.
Check voltage between driver seat control unit harness connector and ground.
+
-
Voltage
Driver seat control unit
Connector
Terminal
B214
48
Ground
Battery voltage
Is the inspection result normal?
.
Repair the driver seat control unit battery power supply circuit.
3.
CHECK GROUND CIRCUIT (OPEN)
Check continuity between driver seat control unit harness connector and ground.
Driver seat control unit
—
Continuity
Connector
Terminal
B214
51
Ground
Existed
Is the inspection result normal?
INSPECTION END
Repair the harness or connector.