2008 INFINITI FX35 service

SE-80
< SERVICE INFORMATION >
AUTOMATIC DRIVE POSITIONER
3. Check voltage between seat memory switch connector D22 ter-minal 5 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness between fuse block (J/B) and seat memory switch.
3.CHECK HARNESS CONTINUITY
1. Disconnect driver seat control unit connector.
2. Check continuity between driv er seat control unit connector
B152 terminals 23, 36 and seat memory switch connector D22
terminals 6, 7.
3. Check continuity between driv er seat control unit connector
B152 terminals 23, 36 and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace harness between driver seat control unit and seat memory switch.
4.CHECK SEAT MEMORY SWITCH INDICATOR SIGNAL
Check voltage between driver seat control unit connector B152 ter-
minals 23, 36 and ground.
OK or NG
OK >> Seat memory indicator lamp circuit is OK.
NG >> Replace seat memory switch.
Check UART Communication Line CircuitINFOID:0000000001328143
1.CHECK UART LINE HERNESS
1. Turn ignition switch OFF.
2. Disconnect driver seat control unit connector and automatic drive positioner control unit connector.
5 (R) – Ground : Battery voltage
PIIA4595E
23 (Y/W) – 6 (PU) : Continuity should exist.
36 (Y/G) – 7 (L) : Continuity should exist.
23 (Y/W) – Ground : Continuity should not exist.
36 (Y/G) – Ground : Continuity should not exist.
PIIB8599E
23 (Y/W) – Ground : Battery voltage
36 (Y/G) – Ground : Battery voltage
PIIA5078E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
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AUTOMATIC DRIVE POSITIONERSE-81
< SERVICE INFORMATION >
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3. Check continuity between driver seat control unit connector B152 terminal 2, 8 and automatic drive positioner connector
M49 terminal 10, 26.
4. Check continuity between driver seat control unit connector B152 terminal 2, 8 and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace harness between driver seat control unit and automatic drive positioner control
unit.
2.CHECK UART LINE SIGNAL 1
1. Turn ignition switch ON.
2. Check signal between driver seat contro l unit connector ground, with oscilloscope.
OK or NG
OK >> GO TO 3.
NG >> Check the flowing.  When voltage signal dose not appear with a constant voltage (approx. 5V), replace driver seat
control unit.
 When voltage signal dose not appear with a const ant voltage (approx. 0V), replace automatic
drive positioner control unit.
3.CHECK UART LINE SIGNAL 2
Check signal between automatic driver positioner control unit connector ground, with oscilloscope.
OK or NG
OK >> GO TO 4.
NG >> Check the flowing. 2 (P)
− 26 (W) : Continuity should exist.
8 (G/Y) − 10 (B) : Continui ty should exist.
2 (P) − Ground : Continuity should not exist.
8 (G/Y) − Ground : Continuity should not exist.
PIIA5099E
Connector Te r m i n a l s
(Wire color) Condition Signal
(Reference value)
(+) (–)
B152 2 (P) Ground Seat mem-
ory switch
1 or 2 op-
eration
PIIA5097E
PIIA4814E
Connector
Te r m i n a l s
(Wire color) Condition Signal
(Reference value)
(+) (–)
M49 10 (B) Ground Seat mem-
ory switch
1 or 2 op-
eration
PIIA5098E
PIIA4813E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

SE-82
< SERVICE INFORMATION >
AUTOMATIC DRIVE POSITIONER
 When voltage signal dose not appear with a constant voltage (approx. 5V), replace automatic
driver seat control unit.
 When voltage signal dose not appear with a constant voltage (approx. 0V), replace driver seat
control unit.
4.CHECK DRIVER SEAT CONTROL UNIT
Dose the automatic drive positioner operate, when the driver seat control unit exchanged?
Does seat memory function operate?
YES >> Replace automatic drive positioner control unit.
NG >> Replace driver seat control unit.
Check Lumbar Support CircuitINFOID:0000000001328144
1.CHECK LUMBAR SUPPORT SWITCH
1. Turn ignition switch OFF.
2. Disconnect lumbar support switch connector.
3. Check voltage between lumbar support switch connector B158 terminal 1 and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace harness between fuse block (J/B) and lumbar support switch.
2.CHECK LUMBAR SUPPORT SWITCH
Lumbar support switch operate, check continuity lum bar support switch connector B158 terminal 31, 32 and 1,
16B.
OK or NG
OK >> GO TO 3.
NG >> Replace lumbar support switch.
3.CHECK LUMBAR SUPPORT MOTOR HARNESS
1. Disconnect lumbar support motor connector.
2. Check continuity between lumbar support switch connector B158 terminal 31, 32 and lumbar support motor connector B172
terminal 31, 32.
3. Check continuity between lumbar support switch connector B158 terminal 31, 32 and ground.1 (R) – Ground: : Battery voltage
PIIB8600E
Con-
nector Te r m i n a l
Lumbar support switch
condition Continuity
B158 31
1 BACKWARD Yes
16B Other than above No
32 1FORWARD Yes
16B Other than above No
PIIB8601E
31 (W) − 31 (W) : Continuity should exist.
32 (L) − 32 (L) : Continuity should exist.
31 (W) − Ground : Continuity should not exist.
32 (L) − Ground : Continuity should not exist.
PIIB8602E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

AUTOMATIC DRIVE POSITIONERSE-83
< SERVICE INFORMATION >
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OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness between lumbar support switch and lumbar support motor.
4.CHECK LUMBAR SUPPORT SWITCH GROUND CIRCUIT
Check continuity between lumbar support switch connector B158
terminal 16B and ground.
OK or NG
OK >> Check the condition of the harness and connector.
NG >> Repair or replace harness between lumbar support switch and ground.
16B (B) – Ground : Continuity should exist.
PIIB8603E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

SE-84
< SERVICE INFORMATION >
POWER SEAT
POWER SEAT
Wiring Diagram - SEAT -INFOID:0000000001328145
TIWM1705E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

POWER SEATSE-85
< SERVICE INFORMATION >
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TIWM1717E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

SE-86
< SERVICE INFORMATION >
HEATED SEAT
HEATED SEAT
DescriptionINFOID:0000000001328146
 When handling seat, be extremely careful not to scratch heating unit.
 To replace heating unit, seat trim and pad should be separated.
 Do not use any organic solvent, such as thinner, benzene, alcohol, etc. to clean trims.
SBT314
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

HEATED SEATSE-87
< SERVICE INFORMATION >
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Wiring Diagram - HSEAT -INFOID:0000000001328147
TIWM1706E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C