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5. CHECK POWER SUPPLY CIRCUIT (DRIVER SEAT CONTROL UNIT)
1. Disconnect driver seat control unit connector.
2. Check voltage between driver seat control unit and ground.
OK or NG
OK >> GO TO 6.
NG >> Repair or replace harness between driver seat control unit and fuse block (J/B).
6. CHECK GROUND CIRCUIT (DRIVER SEAT CONTROL UNIT)
1. Turn ignition switch OFF.
2. Check continuity between the driver seat control unit connector
B152, B153 terminal16A (B), 61E (B/Y) and ground.
OK or NG
OK >> GO TO 6.
NG >> Repair or replace harness between driver seat control
unit and ground.
7. CHECK POWER SUPPLY CIRCUIT (AUTOMATIC DRIVE POSITIONER CONTROL UNIT)
1. Disconnect automatic drive positioner control unit connector.
2. Check voltage between automatic drive positioner control unit
and ground.
OK or NG
OK >> GO TO 8.
NG >> Repair or replace harness between automatic drive positioner control unit and fuse block (J/B).
ConnectorTerminals
(Wire color)Power
sourceconditionVoltage (V)
(Approx.)
(+) (–)
B152 9 (BR) GroundSTART
power
supplyIgnition
switch
STARTBattery
voltage
B1531A (R),
11 A ( R / W )GroundBattery
power
supplyIgnition
switch
OFFBattery
voltage
PIIA5085E
16A (B) – Ground : Continuity should exist.
61E (B/Y) – Ground : Continuity should exist.
PIIA5087E
ConnectorTerminals
(Wire color)Power
sourceconditionVoltage (V)
(Approx.)
(+) (–)
M49 28 (SB)
GroundSTART
power
supplyIgnition
switch
STARTBattery
voltage
M50 34 (L/R)
M50 39 (W/R) GroundBattery
power
supplyIgnition
switch
OFFBattery
voltage
PIIA5086E

AUTOMATIC DRIVE POSITIONER
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All the automatic operations do not operate.1. Detention switch (P range switch) circuit checkSE-82
2. Key switch and key lock solenoid circuit check (with
intelligent key)SE-83
3. Key switch circuit inspection (without intelligent key)SE-85
4. UART communication line circuit checkSE-89
5. Tilt sensor circuit checkSE-61
6. Telescopic sensor circuit checkSE-74
7. If all the above systems are normal, replace the auto-
matic drive positioner control unit.SE-15
A part of seat system does not operate (only manual
operation).1. Sliding switch circuit checkSE-67
2. Reclining switch circuit checkSE-68
3. Front lifting switch circuit checkSE-70
4. Rear lifting switch circuit checkSE-71
5. If the above systems are normal, replace the driver
seat control unit.SE-15
A part of steering tilt, telescopic and door mirror does not
operate (only manual operation).1. Door mirror remote control (change over switch) circuit
check SE-78
2. Door mirror remote control (mirror switch) switching cir-
cuit check SE-80
3. Tilt switch checkSE-76
4. Telescopic switch checkSE-74
5. If the above systems are normal, replace the automatic
drive positioner control unit.SE-15
Only memory switch operation dose not operate.1. Seat memory switch circuit checkSE-862. If the above systems are normal, replace the driver
seat control unit.SE-15
Seat memory indicator lamps 1 and 2 do not illuminate.1. Seat memory indicator lamp circuit checkSE-882. If all the above systems are normal, replace the driver
seat control unit.SE-15
The Entry/Exiting does not operated when door is opened
and closed.
(The Entry/Exiting operates with key switch)1. Front door switch (driver side) circuit checkSE-65
2. If all the above systems are normal, replace the BCMBCS-15
Only door mirror system dose not operated (only auto-
matic operation).Steering and door mirror sensor power supply and ground
circuit checkSE-64
Only seat sliding and seat reclining operation does not
operationSliding switch and reclining switch ground circuit checkSE-72
Only sear lifting (front and rear) operation does not opera-
tionFront lifting switch and rear lifting switch ground circuit
checkSE-73
Only lumber support does not operate Lumber support circuit checkSE-91
Symptom Diagnoses / service procedureReference
page

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3. CHECK HARNESS CONTINUITY 1
1. Disconnect automatic drive positioner control unit and door mirror (passenger side) connector.
2. Check continuity between automatic drive positioner control unit connector M50 terminal 33 (G/W), 41 (B/
Y) and door mirror (passenger side) connector D32 terminal 5 (BR), 12 (G).
3. Check continuity between automatic drive positioner control unit
connector M50 terminals 33 (G/W), 41 (B/P) and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness between automatic drive
positioner control unit and door mirror (passenger side).
4. CHECK HARNESS CONTINUITY 2
1. Check continuity between automatic drive positioner control unit connector M49 terminal 5 (OR), 21 (G/Y)
and door mirror (passenger side) connector D32 terminal 4 (LG), 11 (P).
2. Check continuity between automatic drive positioner control unit
connector M49 terminal 5 (OR), 21 (G/Y) and ground.
OK or NG
OK >> Check the condition of the harness and connector.
NG >> Repair or replace harness between automatic drive
positioner control unit and door mirror (passenger side).
Steering and Door Mirror Sensor Power and Ground Circuit CheckAIS003GA
1. CHECK MIRROR SENSOR POWER SUPPLY
1. Turn ignition switch OFF.
2. Check voltage between automatic drive positioner control unit connector M50 terminal 33 and ground.
OK or NG
OK >> GO TO 2.
NG >> Replace automatic drive positioner control unit.33 (G/W) – 5 (BR) : Continuity should exist.
41 (B/Y) – 12 (G) : Continuity should exist.
33 (G/W) – Ground : Continuity should not exist.
41 (B/Y) – Ground : Continuity should not exist.
PIIA6127E
5 (OR) – 4 (LG) : Continuity should exist.
21 (G/Y) – 11 (P) : Continuity should exist.
5 (OR) – Ground : Continuity should not exist.
21 (G/Y) – Ground : Continuity should not exist.
PIIA6128E
33 (G/W) – Ground : Approx. 5V
PIIA4778E

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Sliding Switch Circuit CheckAIS002Y1
1. CHECK FUNCTION
With CONSULT-II
With “SLIDE SW-FR, SLIDE SW-RR” on the DATA MONITOR, oper-
ate the sliding switch to check ON/OFF operation.
Without CONSULT-II
1. Turn ignition switch OFF.
2. Check voltage between driver seat control unit connector and ground.
OK or NG
OK >> Sliding switch circuit is OK.
NG >> GO TO 2.
2. CHECK HARNESS CONTINUITY
1. Disconnect driver seat control unit connector and power seat switch (driver side) connector.
2. Check continuity between driver seat control unit connector
B152 terminals 24 (L/R), 37 (L/P) and driver power seat switch
connector B154 terminals 24 (L/R), 37 (L/P).
3. Check continuity between driver seat control unit connector
B152 terminals 24 (L/R), 37 (L/P) and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness between driver seat control unit and power seat switch.
Monitor item [OPER-
ATION or UNIT]Contents
SLIDE SW–
FR"ON/
OFF"ON/OFF status judged from the sliding switch (FR) signal
is displayed.
SLIDE SW–
RR"ON/
OFF"ON/OFF status judged from the sliding switch (RR) signal
is displayed.
PIIA0313E
ConnectorTe r m i n a l s
(Wire color)
ConditionVoltage (V)
(Approx.)
(+) (-)
B15224 (L/R)
GroundSliding switch
turned to forward0
Sliding switch neu-
tral positionBattery voltage
37 (L/P)Sliding switch
turned to backward0
Sliding switch neu-
tral positionBattery voltage
PIIA6711E
24 (L/R) – 24 (L/R) : Continuity should exist.
37 (L/P) – 37 (L/P) : Continuity should exist.
24 (L/R) – Ground : Continuity should not exist.
37 (L/P) – Ground : Continuity should not exist.
PIIA6094E

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Revision: 2004 November 2004 FX35/FX45
3. CHECK SLIDING SWITCH
Check continuity between driver seat switch as follows.
OK or NG
OK >> Check the condition of the harness and connector.
NG >> Replace driver power seat switch.
Reclining Switch CheckAIS002Y2
1. CHECK FUNCTION
With CONSULT-II
With “RECLINING SW-FR, RECLINING SW-RR” on the DATA MON-
ITOR, operate the reclining switch to check ON/OFF operation.
Without CONSULT-II
1. Turn ignition switch OFF.
2. Check voltage between driver seat control unit connector and
ground.
OK or NG
OK >> Reclining switch is OK.
NG >> GO TO 2.
Terminals Condition Continuity
24
61DSliding switch turned to forward Yes
Sliding switch neutral position No
37Sliding switch turned to backward Yes
Sliding switch neutral position No
PIIA6101E
Monitor item [OPERA-
TION or UNIT]Contents
RECLN SW
–FR“ON/
OFF”ON/OFF status judged from the reclining switch (FR)
signal is displayed.
RECLN SW
–RR“ON/
OFF”ON/OFF status judged from the reclining switch (RR)
signal is displayed.
PIIA0313E
ConnectorTe r m i n a l s
(Wire color)
ConditionVoltage (V)
(Approx.)
(+) (–)
B15225 (L/OR)
GroundReclining switch
turned to forward0
Reclining switch
neutral positionBattery voltage
38 (LG/B)Reclining switch
turned to backward0
Reclining switch
neutral positionBattery voltage
PIIA6095E

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2. CHECK HARNESS CONTINUITY
1. Disconnect driver seat control unit connector and power seat
switch (driver side) connector.
2. Check continuity between driver seat control unit connector
B152 terminals 25 (L/OR), 38 (LG/B) and power seat switch
(driver side) connector B154 terminals 25 (L/OR), 38 (LG/B).
3. Check continuity between driver seat control unit connector
B303 terminals 25 (L/OR), 38 (LG/B) and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness between driver seat control unit and power seat switch.
3. CHECK RECLINING SWITCH
Check continuity between driver seat switch as follows.
OK or NG
OK >> Check the condition of the harness and connector.
NG >> Replace power seat switch (driver side).25 (L/OR) – 25 (L/OR) : Continuity should exist.
38 (LG/B) – 38 (LG/B) : Continuity should exist.
25 (LO/R) – Ground : Continuity should not exist.
38 (LG/B) – Ground : Continuity should not exist.
PIIA6096E
Terminals Condition Continuity
25
61DReclining switch turned to forward Yes
Reclining switch neutral position No
38Reclining switch turned to backward Yes
Reclining switch neutral position No
PIIA6102E

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Front Lifting Switch Circuit CheckAIS002Y3
1. CHECK FUNCTION
With CONSULT-II
With “LIFT FR SW-UP, LIFT FR SW-DN” on the DATA MONITOR,
operate the front lifting switch to check ON/OFF operation.
Without CONSULT-II
1. Turn ignition switch OFF.
2. Check voltage between driver seat control unit connector and
ground.
OK or NG
OK >> Front lifting switch circuit is OK.
NG >> GO TO 2.
2. CHECK HARNESS CONTINUITY
1. Disconnect driver seat control unit connector and power seat switch (driver side) connector.
2. Check continuity between driver seat control unit connector
B152 terminals 26 (L/P), 39 (L/G) and driver seat switch connec-
tor B156 terminals 26 (L/P), 39 (L/G).
3. Check continuity between driver seat control unit connector
B152 terminals 26 (L/P), 39 (L/G) and ground
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness between driver seat control unit and power seat switch.
Monitor item [OPERA-
TION or UNIT]Contents
LIFT FR SW–
DN"ON/
OFF"ON/OFF status judged from the FR lifter switch
(DOWN) signal is displayed.
LIFT RR SW–
UP"ON/
OFF"ON/OFF status judged from the RR lifter switch (UP)
signal is displayed.
PIIA0323E
ConnectorTerminals
(Wire color)
ConditionVoltage (V)
(Approx.)
(+) (–)
B30326 (L/P)
GroundFront lifting switch ON
(UP operation)0
Front lifting switch OFF Battery voltage
39 (L/G)Front lifting switch ON
(DOWN operation)0
Front lifting switch OFF Battery voltage
PIIA6097E
26 (L/P) – 26 (L/P) : Continuity should exist.
39 (L/G) – 39 (L/G) : Continuity should exist.
26 (L/P) – Ground : Continuity should not exist.
39 (L/G) – Ground : Continuity should not exist.
PIIA6098E

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3. CHECK FRONT END LIFTING SWITCH
Check continuity between driver seat switch as follows.
OK or NG
OK >> Check the condition of the harness and connector.
NG >> Replace driver power seat switch.
Rear Lifting Switch Circuit CheckAIS002Y4
1. CHECK FUNCTION
With CONSULT-II
With “LIFT RR SW-UP, LIFT RR SW-DN” on the DATA MONITOR,
operate the rear lifting switch to check ON/OFF operation.
Without CONSULT-II
1. Turn ignition switch OFF.
2. Check voltage between driver seat control unit connector and
ground.
OK or NG
OK >> Rear seat lifting switch circuit is OK.
NG >> GO TO 2.
Connector Terminals Condition Continuity
B15626
61BFront lifting switch turned to
upwardYe s
Front lifting switch neutral
positionNo
39Front lifting switch turned to
downwardYe s
Front lifting switch neutral
positionNo
PIIA6103E
Monitor item [OPERATION or
UNIT]Contents
LIFT RR SW–UP “ON/OFF” (ON/OFF) status judged from the RR lifter
switch (UP) signal is displayed.
LIFT RR SW–DN “ON/OFF”(ON/OFF) status judged from the RR lifter
switch (DOWN) signal is displayed.
PIIA0323E
ConnectorTerminals
(Wire color)
ConditionVoltage (V)
(Approx.)
(+) (–)
B15227 (L)
GroundRear lifting switch turned
to upward0
Rear lifting switch neutral
positionBattery volt-
age
40 (L/Y)Rear lifting switch turned
to downward0
Rear lifting switch neutral
positionBattery volt-
age
PIIA6099E