Infiniti F50. Manual - part 797

CLIMATE CONTROLLED SEAT

SE-179

C

D

E

F

G

H

J

K

L

M

A

B

SE

2. 

CHECK CLIMATE CONTROLLED SEAT TEMPERATURE DIAL POWER SUPPLY CIRCUIT

●

Connect climate controlled seat control unit connector and climate controlled seat temperature dial con-
nector.

●

Turn ignition switch ON.

●

Check voltage between climate controlled seat control unit con-
nector  and ground.

OK or NG

OK

>> Climate controlled seat temperature dial circuit check is OK.

NG

>> When turn ignition ON and temperature dial adjust, check the following

●

When voltage is approx 12V, GO TO 3

●

When voltage is approx 0V, Replace climate controlled seat control unit.

3. 

CHECK CLIMATE CONTROLLED SEAT TEMPERATURE DIAL

1.

Turn ignition switch OFF.

2.

Disconnect climate controlled seat temperature dial connector.

3.

Check continuity between climate controlled seat temperature
dial as follows.

OK or NG

OK

>> Replace climate controlled seat control unit.

NG

>> Replace climate controlled seat temperature dial. 

Connector

Terminal

(Wire color)

Condition

Voltage 

(V)

(+)

(–)

B159

 (Driver side),

B359

(Passenger side)

J7(L)

Ground

temperature dial 1 – 4

7.1 – 11.4

Turn ignition switch OFF.

0

PIIA3383E

Terminal

Condition

Continuity(

Ω

)

(Approx)

J7

J15

Temperature dial 1st.

2370

Temperature dial 2nd.

 1100

Temperature dial 3rd.

 619

Temperature dial 4th.

 237

PIIB0390E

SE-180

CLIMATE CONTROLLED SEAT

Climate Controlled Seat Switch Ground Circuit Inspection

EIS003US

1. 

 CHECK CLIMATE CONTROLLED SEAT SWITCH 

1.

Turn ignition switch OFF.

2.

Disconnect climate controlled seat switch connector.

3.

Check continuity between climate controlled seat switch as fol-
lows.

OK or NG

OK

>> GO TO 2.

NG

>> Replace climate controlled seat switch. 

2. 

 CHECK CLIMATE CONTROLLED SEAT SWITCH GROUND CIRCUIT

Check continuity between climate controlled seat switch connector
B156 (driver side), B356 (passenger side) terminal JCA (B).

OK or NG

OK

>> Climate controlled seat control circuit check is OK.

NG

>> Repair or replace harness between climate controlled

seat switch and body ground.

Terminal

Condition

Continuity

J6

JCA

Climate controlled seat switch 
HEAT position.

YES

Climate controlled seat switch 
OFF.

NO

J16

Climate controlled seat switch 
COOL position.

YES

Climate controlled seat switch 
OFF.

NO

PIIA3350E

JCA (B) 

−

 Ground

:Continuity should exist.

PIIA3332E

CLIMATE CONTROLLED SEAT

SE-181

C

D

E

F

G

H

J

K

L

M

A

B

SE

Seat Cushion Thermal Electric Device Circuit Inspection

EIS003SK

1. 

CHECK SEAT CUSHION THERMAL ELECTRIC DEVICE HARNESS

1.

Turn ignition switch OFF.

2.

Disconnect climate controlled seat control unit connector and seat cushion thermal electric device con-
nector.

3.

Check continuity between climate controlled seat control unit
connector B159 (driver side), B359 (passenger side) terminal J1
(Y/G), J2 (W/L) and climate controlled seat temperature dial
connector B154 (driver side), B354 (passenger side) terminal J1
(Y/G), J2 (W/L).

4.

Check continuity between climate controlled seat control unit
connector B159 (driver side), B359 (passenger side) terminal J1
(Y/G), J2 (W/L) and ground.

OK or NG

OK

>> GO TO 2.

NG

>> Repair or replace harness between climate controlled seat control unit and seat cushion thermal

electric device.

2. 

CHECK SEAT CUSHION THERMAL ELECTRIC DEVICE POWER SUPPLY CIRCUIT

1.

Connect climate controlled seat control unit connector.

2.

Check voltage between climate controlled seat control unit con-
nector and ground.

OK or NG

OK

>> Seat cushion Thelma electric device circuit check is OK.

NG

>> Replace seat cushion thermal electric device.

J1 (Y/G) 

−

 J1 (Y/G)

: Continuity should exist

J2 (W/L) 

−

 J2 (W/L)

: Continuity should exist

J1 (Y/G) 

−

 Ground

: Continuity should not exist

J2 (W/L) 

−

 Ground

: Continuity should not exist

PIIA3339E

Connector

Terminal

(Wire color)

Condition

Voltage (V)

(Approx)

(+)

(–)

B159

(Driver side),

B359

(Passenger side)

J1(Y/G)

Ground

Turn ignition switch ON,
climate controlled seat 
switch turn "HEAT".

 0 – 12

Turn ignition switch OFF.

0

J2(WL)

Turn ignition switch ON,
climate controlled seat 
switch turn "COOL".

 0 – 12

Turn ignition switch OFF.

0

PIIA3338E

SE-182

CLIMATE CONTROLLED SEAT

Seat Cushion Thermal Electric Device Sensor Circuit Inspection

EIS003UP

1. 

CHECK SEAT CUSHION THERMAL ELECTRIC DEVICE HARNESS

1.

Turn ignition switch OFF.

2.

Disconnect climate controlled seat control unit connector and seat cushion thermal electric device con-
nector.

3.

Check continuity between climate controlled seat control unit
connector B159 (driver side), B359 (passenger side) terminal
J17 (B/R), J18 (G/R) and climate controlled seat temperature
dial connector B154 (driver side), B354 (passenger side) termi-
nal J17 (B/R), J18 (G/R).

4.

Check continuity between climate controlled seat control unit
connector B159 (driver side), B359 (passenger side) terminal
J17 (B/R), J18 (G/R) and ground.

OK or NG

OK

>> GO TO 2.

NG

>> Repair or replace harness between climate controlled seat control unit and seat cushion thermal

electric device.

2. 

CHECK SEAT CUSHION THERMAL ELECTRIC DEVICE SENSOR

●

Connect climate controlled seat control unit connector and seat cushion thermal electric device connector.

●

Turn ignition switch ON.

●

Check voltage between seat cushion thermal electric device
connector B154 (driver side), B354 (passenger side) terminal
J18 (G/R) and body ground.

OK or NG

OK

>> Seat cushion thermal electric device sensor circuit

inspection is OK.

NG

>> Replace seat cushion thermal electric device.

J17 (B/R) 

−

 J17 (B/R)

: Continuity should exist

J18 (G/R) 

−

 J18 (G/R)

: Continuity should exist

J17 (B/R) 

−

 Ground

: Continuity should not exist

J18 (G/R) 

−

 Ground

: Continuity should not exist

PIIA3337E

J18 (G/R) 

−

 Ground

: 0.5V 

−

 4V (Approx.)

PIIA3336E