Page 2745 of 3061

AUTOMATIC DRIVE POSITIONER
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UART Communication Line Circuit InspectionINFOID:0000000003533204
1.CHECK UART LINE INPUT/OUTPUT SIGNAL 1
1. Turn ignition switch OFF.
2. Check signal between driver seat control unit connector and
ground, with oscilloscope.
OK or NG
OK >> GO TO 2.
NG >> Check the following.
• When voltage wave form does not appear with a constant voltage (approx. 5V), replace driver
seat control unit.
• When voltage wave form does not appear with a constant voltage (approx. 0V), replace auto-
matic driver seat control unit.
2.CHECK UART LINE INPUT/OUTPUT SIGNAL 2
Check signal between automatic drive positioner control unit con-
nector ground, with oscilloscope.
OK or NG
OK >> GO TO 3.
NG >> Check the following.
• When voltage wave form does not appear with a constant voltage (approx. 5V), replace auto-
matic drive positioner control unit.
• When voltage wave form does not appear with a constant voltage (approx. 0V), replace driver
seat control unit.
3.CHECK UART LINE HARNESS
ConnectorTe r m i n a l s
Condition Signal
(+) (-)
P2 17 GroundPedal ad-
justing
switch ON
(FOR-
WARD or
BACK-
WARD op-
eration)
PIIA4599E
PIIA4814E
ConnectorTe r m i n a l s
Condition Signal
(+) (-)
M33 10 GroundPedal ad-
justing
switch ON
(FOR-
WARD or
BACK-
WARD op-
eration)
PIIA4816E
PIIA4813E
Page 2746 of 3061
SE-74
< SERVICE INFORMATION >
AUTOMATIC DRIVE POSITIONER
1. Disconnect driver seat control unit and automatic drive posi-
tioner control unit.
2. Check continuity between driver seat control unit connector P2
terminals 1, 17, and automatic drive positioner connector M33
terminals 10, 26.
3. Check continuity between driver seat control unit connector P2
terminals 1, 17 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness.
4.CHECK DRIVER SEAT CONTROL UNIT
Does the automatic drive positioner operate when the driver seat control unit is exchanged?
OK or NG
OK >> Replace driver seat control unit.
NG >> Replace automatic drive positioner control unit.
Removal and InstallationINFOID:0000000003533205
Refer to ACC-3 and BR-5 . 1 - 10 : Continuity should exist.
17 - 26 : Continuity should exist.
1 - Ground : Continuity should not exist.
17 - Ground : Continuity should not exist.
PIIA4598E
Page 2747 of 3061
POWER SEAT
SE-75
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POWER SEAT
Wiring Diagram - SEAT - for Passenger SeatINFOID:0000000003533206
WIWA1406E
Page 2748 of 3061
SE-76
< SERVICE INFORMATION >
HEATED SEAT
HEATED SEAT
DescriptionINFOID:0000000003533207
• When handling seat, be extremely careful not to scratch heating unit.
• Front passenger seat cushion and seatbacks equipped with airbags cannot be disassembled. They are
replaced as assemblies only.
• Do not use any organic solvent, such as thinner, benzene, alcohol, etc. to clean trim.
WIIA0031E
Page 2749 of 3061
HEATED SEAT
SE-77
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SchematicINFOID:0000000003533208
WIWA0586E
Page 2750 of 3061
SE-78
< SERVICE INFORMATION >
HEATED SEAT
Wiring Diagram - HSEAT -
INFOID:0000000003533209
WIWA0587E
Page 2751 of 3061
HEATED SEAT
SE-79
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WIWA0588E
Page 2752 of 3061
SE-80
< SERVICE INFORMATION >
HEATED SEAT
WIWA0589E