ECU NISSAN TEANA 2008 Service Manual

SE-2
SEAT CUSHION HEATER ................................31
FRONT SEAT ............................................................31
FRONT SEAT : Description ....................................31
FRONT SEAT : Component Function Check ........31
FRONT SEAT : Diagnosis Procedure ....................31
REAR SEAT ..............................................................31
REAR SEAT : Description ......................................32
REAR SEAT : Component Function Check ..........32
REAR SEAT : Diagnosis Procedure .......................32
SEATBACK HEATER ........................................33
FRONT SEAT ............................................................33
FRONT SEAT : Description ....................................33
FRONT SEAT : Component Function Check ........33
FRONT SEAT : Diagnosis Procedure ....................33
REAR SEAT ..............................................................34
REAR SEAT : Description ......................................34
REAR SEAT : Component Function Check ..........34
REAR SEAT : Diagnosis Procedure .......................35
HEATED SEAT SWITCH INDICATOR ..............37
FRONT SEAT ............................................................37
FRONT SEAT : Description ....................................37
FRONT SEAT : Component Function Check ........37
FRONT SEAT : Diagnosis Procedure ....................37
FRONT SEAT : Component Inspection ..................38
REAR SEAT ..............................................................38
REAR SEAT : Description ......................................38
REAR SEAT : Component Function Check ..........38
REAR SEAT : Diagnosis Procedure .......................39
REAR SEAT : Component Inspection ....................40
VENTILATION SEAT SWITCH INDICATOR .....41
FRONT SEAT ............................................................41
FRONT SEAT : Description ....................................41
FRONT SEAT : Component Function Check ........41
FRONT SEAT : Diagnosis Procedure ....................41
FRONT SEAT : Component Inspection ..................42
REAR SEAT ..............................................................42
REAR SEAT : Description ......................................42
REAR SEAT : Component Function Check ..........42
REAR SEAT : Diagnosis Procedure .......................43
REAR SEAT : Component Inspection ....................44
POWER SEAT ...................................................45
Wiring Diagram - POWER SEAT FOR DRIVER
SIDE - .....................................................................
45
Wiring Diagram - POWER SEAT FOR PASSEN-
GER SIDE - ............................................................
48
ECU DIAGNOSIS ........................................52
VENTILATION SEAT CONTROL UNIT .............52
FRONT SEAT ............................................................52
FRONT SEAT : Reference Value ...........................52
FRONT SEAT : Wiring Diagram - FRONT HEAT-
ED SEAT AND VENTILATION SEAT SYSTEM - ...
53
FRONT SEAT : Fail-safe ........................................59
REAR SEAT ..............................................................60
REAR SEAT : Reference Value ..............................60
REAR SEAT : Wiring Diagram - REAR HEATED
SEAT AND VENTILATION SEAT SYSTEM - .........
62
REAR SEAT : Fail-safe ...........................................67
SYMPTOM DIAGNOSIS ............................69
VENTILATION SEAT AND HEATED SEAT
DO NOT OPERATE ...........................................
69
Diagnosis Procedure ...............................................69
VENTILATION SEAT DOES NOT OPERATE ...70
FRONT SEAT ............................................................70
FRONT SEAT : Diagnosis Procedure .....................70
REAR SEAT ..............................................................70
REAR SEAT : Diagnosis Procedure .......................70
HI MODE AND LO MODE OF HEATED SEAT
DO NOT OPERATE ...........................................
71
FRONT SEAT ............................................................71
FRONT SEAT : Description ....................................71
FRONT SEAT : Diagnosis Procedure .....................71
REAR SEAT ..............................................................71
REAR SEAT : Description .......................................71
REAR SEAT : Diagnosis Procedure .......................71
HI MODE OF HEATED SEAT DOES NOT OP-
ERATE ...............................................................
73
FRONT SEAT ............................................................73
FRONT SEAT : Diagnosis Procedure .....................73
REAR SEAT ..............................................................73
REAR SEAT : Diagnosis Procedure .......................73
LO MODE OF HEATED SEAT DOES NOT
OPERATE ..........................................................
74
FRONT SEAT ............................................................74
FRONT SEAT : Description ....................................74
FRONT SEAT : Diagnosis Procedure .....................74
REAR SEAT ..............................................................74
REAR SEAT : Description .......................................74
REAR SEAT : Diagnosis Procedure .......................74
ONLY SEATBACK HEATER IS OPERATED
IN HI MODE OF HEATED SEAT .......................
76
FRONT SEAT ............................................................76
FRONT SEAT : Description ....................................76
FRONT SEAT : Diagnosis Procedure .....................76
REAR SEAT ..............................................................76

SE-52
< ECU DIAGNOSIS >[WITH VENTILATION SEAT]
VENTILATION SEAT CONTROL UNIT
ECU DIAGNOSIS
VENTILATION SEAT CONTROL UNIT
FRONT SEAT
FRONT SEAT : Reference ValueINFOID:0000000003809262
TERMINAL LAYOUT
PHYSICAL VALUES
JMJIA2081ZZ
Te r m i n a l N o .
(Wire color)Description
ConditionVa l u e
(Approx.)
(+) (–) Signal nameInput/
Output
44
(GR/R)Ground Battery power supply Input Ignition switch OFF Battery voltage
45
(B/P)Ground Ground — Ignition switch ON 0 V
46
(B/W)Ground IGN power supply Input Ignition switchOFF or ACC 0 V
ON Battery voltage
47
(Y/G)Ground Ventilation seat switch HI signal Input Ventilation seat switch HIPressed 0 V
Other than
aboveBattery voltage
48
(P/B)Ground Ventilation seat switch LO signal Input Ventilation seat switch LOPressed 0 V
Other than
aboveBattery voltage
49
(BR)GroundVentilation seat HI indictor sig-
nalOutput Ventilation seat HI indicatorIlluminate 3 V
Other than
aboveBattery voltage
50
(BR/W)GroundVentilation seat LO indictor sig-
nalOutputVentilation seat LO indica-
torIlluminate 3 V
Other than
aboveBattery voltage
51
(W/V)Ground Heated seat switch HI signal Input Heated seat switch HIPressed 0 V
Other than
aboveBattery voltage
52
(R/V)Ground Heated seat switch LO signal Input Heated seat switch LOPressed 0 V
Other than
aboveBattery voltage
53
(Y/L)Ground Heated seat HI indictor signal Output Heated seat HI indicatorIlluminate 3 V
Other than
aboveBattery voltage

VENTILATION SEAT CONTROL UNIT
SE-53
< ECU DIAGNOSIS >[WITH VENTILATION SEAT]
C
D
E
F
G
H
I
K
L
MA
B
SE
N
O
P
FRONT SEAT : Wiring Diagram - FRONT HEATED SEAT AND VENTILATION SEAT
54
(O/B)Ground Heated seat LO indictor signal Output Heated seat LO indicatorIlluminate 3 V
Other than
aboveBattery voltage
55
(V/R)Ground Ventilation motor ground — Ignition switch ON 0 V
56
(GR/L)GroundVentilation motor speed control
signalOutput Ventilation seatLO mode 8 V
HI mode 10.5 V
57
(Y)Ground Ventilation motor power supply Output Ventilation seatLO mode Battery voltage
HI mode Battery voltage
Other than
above0 V
58
(B/R)Ground Heated seat power supply Output Heated seatLO mode Battery voltage
HI mode Battery voltage
Other than
above0 V
59
(W/R)GroundGround
(Heated seat HI mode)— Heated seatLO mode 6.5 V
HI mode 0 V
Other than
above0 V
60
(R/B)GroundHeated seat HI mode power
supplyOutput
Heated seatLO mode 0 V
Heated seat LO mode ground —HI mode Battery voltage
Other than
above0 V Te r m i n a l N o .
(Wire color)Description
ConditionVa l u e
(Approx.)
(+) (–) Signal nameInput/
Output

SE-54
< ECU DIAGNOSIS >[WITH VENTILATION SEAT]
VENTILATION SEAT CONTROL UNIT
SYSTEM -
INFOID:0000000003809263
JCJWM0288GB

VENTILATION SEAT CONTROL UNIT
SE-55
< ECU DIAGNOSIS >[WITH VENTILATION SEAT]
C
D
E
F
G
H
I
K
L
MA
B
SE
N
O
P
JCJWM0289GB

SE-56
< ECU DIAGNOSIS >[WITH VENTILATION SEAT]
VENTILATION SEAT CONTROL UNIT
JCJWM0290GB

VENTILATION SEAT CONTROL UNIT
SE-57
< ECU DIAGNOSIS >[WITH VENTILATION SEAT]
C
D
E
F
G
H
I
K
L
MA
B
SE
N
O
P
JCJWM0291GB

SE-58
< ECU DIAGNOSIS >[WITH VENTILATION SEAT]
VENTILATION SEAT CONTROL UNIT
JCJWM0292GB

VENTILATION SEAT CONTROL UNIT
SE-59
< ECU DIAGNOSIS >[WITH VENTILATION SEAT]
C
D
E
F
G
H
I
K
L
MA
B
SE
N
O
P
FRONT SEAT : Fail-safeINFOID:0000000003900687
 The ventilation seat control unit is equipped with the fail-safe function.
 When a malfunction occurs in the system as per the following, the ventilation seat control unit stops all out-
puts. The system enters in the system turns OFF position.
JCJWM0293GB

SE-60
< ECU DIAGNOSIS >[WITH VENTILATION SEAT]
VENTILATION SEAT CONTROL UNIT
*: System voltage is the voltage between ventilation seat control unit power source and the ground.
NOTE:
When the system enters in the fail-safe mode again after performing resetting procedure, perform diagnosis.
REAR SEAT
REAR SEAT : Reference ValueINFOID:0000000003940342
TERMINAL LAYOUT
PHYSICAL VALUES
Malfunction Malfunctioning condition Reset procedure
Ventilation motor system open circuitIn ventilation seat mode, ventilation motor
system open circuit is detected for 10 seconds
or moreTurn OFF key switch and turn ON key
switch again. System is reset
Ventilation motor system short circuitIn ventilation seat mode, heater unit system
short circuit is detected for 0.2 seconds or
moreTurn OFF key switch and turn ON key
switch again. System is reset
Heater unit system open circuitIn heated seat LO mode, heater unit system
open circuit is detected for 0.1 seconds or
moreTurn OFF key switch and turn ON key
switch again. System is reset
Heater unit system short circuitIn heated seat LO mode, heater unit system
short circuit is detected for 0.1 seconds or
moreTurn OFF key switch and turn ON key
switch again. System is reset
System voltage out of rangeSystem voltage* of ventilation seat control unit
is out of operation range (8.5 V - 16.5 V) When system voltage* returns within nor-
mal range after more than 0.5 seconds,
system recovers
 When recovering, system returns to the
same status as previous
JMJIA2012ZZ
Te r m i n a l N o .
(Wire color)Description
ConditionVa l u e
(Approx.)
(+) (–) Signal nameInput/
Output
44
(R)Ground Battery power supply Input Ignition switch OFF Battery voltage
45
(B/W)Ground Ground — Ignition switch ON 0 V
46
(R/W)Ground IGN power supply Input Ignition switchOFF or ACC 0 V
ON Battery voltage
47
LH:(V)
RH:(G/O)Ground Ventilation seat switch HI signal Input Ventilation seat switch HIPressed 0 V
Other than
aboveBattery voltage
48
LH:(V/W)
RH:(G/L)Ground Ventilation seat switch LO signal Input Ventilation seat switch LOPressed 0 V
Other than
aboveBattery voltage