Infiniti F50. Manual - part 779

 

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Infiniti F50. Manual - part 779

 

 

POWER SEAT

SE-107

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B

SE

Work Flow

EIS003UX

1.

Check the symptom and customer's requests.

2.

Understand the outline of system. Refer to 

SE-94, "System Description"

 .

3.

According to the trouble diagnosis chart, repair or replace the cause of the malfunction. Refer to 

SE-107,

"Trouble Diagnoses Symptom Chart"

 .

4.

Does power seat operate normally? YES: GO TO 5, NO: GO TO 4.

5.

INSPECTION END.

Trouble Diagnoses Symptom Chart

EIS003UY

Check that other systems using the signal of the following systems operate normally.

36

LG/R

Cancel switch sig-
nal

OFF

Cancel switch ON with rear 
door (RH) open

5

Cancel switch ON with rear 
door (RH) close

0

Cancel switch CANCEL

0

43

GY/R

Rear door switch 
(RH) signal

OFF

Rear door RH) open (ON)

0

Rear door (RH) close (OFF)

Battery voltage

74

G/R

Ground (sensor 
system)

ON

0

TERMI-

NAL

WIRE 

COLOR

ITEM

Ignition 

switch

CONDITION

Voltage (V)

 (Approx.)

Symptom

Diagnoses / service procedure

Refer to page

Front power seat passenger side and rear power seat LH, RH 
do not operate.

Power seat power supply circuit inspection

SE-109

Front power seat passenger side does not operate, but rear 
power seat is operated.

Front power seat passenger side switch circuit 
inspection

SE-109

Front power seat passenger side does not do the sliding.

Front power seat passenger side sliding circuit 
inspection

SE-110

Front power seat passenger side does not do the reclining.

Front power seat passenger side reclining cir-
cuit inspection

SE-111

Front power seat passenger side front does not do the front lift-
ing.

Front power seat passenger side  front rifting 
circuit inspection

SE-112

Front power seat passenger side rear does not do the rear lift-
ing.

Front power seat passenger side  rear rifting 
circuit inspection

SE-113

Rear power seat LH or RH sliding switch does not operate 
moreover, does not turnout/return function if the door is 
opened. (With heated seat)

1. Rear power seat power supply ground cir-
cuit inspection (With heated seat)

SE-113

2. Rear power seat sliding motor circuit inspec-
tion (With heated seat)

SE-114

3. Replace rear power seat sliding motor

Rear power seat LH or RH does not operate but turnout/return 
function when the door is opened. (With heated seat)

Rear power seat switch circuit inspection (With 
heated seat)

SE-115

Rear power seat LH and RH turnout/return function do not 
operate but operate in sliding switch. (With heated seat)

Auto return cancel switch circuit inspection 2 
(With heated seat)

SE-116

Rear power seat LH or RH turnout/return function does not 
operated but operates by a sliding switch. (With heated seat)

1. Rear door switch circuit inspection (With 
heated seat) 

SE-118

2. Auto return cancel switch circuit inspection 
1 (With heated seat)

SE-117

3. Rear power seat sliding sensor circuit 
inspection (With heated seat)

SE-119

4. Replace rear power seat control unit 

SE-108

POWER SEAT

Rear power seat LH or RH sliding switch does not operate 
moreover, turnout/return function  does not operate if the door 
is opened (Without heated seat)

1. Rear power seat power supply and ground 
circuit inspection (Without heated seat)

SE-120

2. Rear power seat sliding motor circuit inspec-
tion (Without heated seat)

SE-121

3. Replace rear power seat sliding motor

Rear power seat LH or RH does not operate but turnout/return 
function operates when the door is opened  (Without heated 
seat)

Rear power seat switch circuit inspection 
(Without heated seat)

SE-122

Rear power seat LH and RH turnout/return function do not 
operate,  but the operate by sliding switch (Without heated 
seat)

Auto return cancel switch circuit inspection 2 
(Without heated seat)

SE-123

Rear power seat LH or RH turnout/return function does not 
operate,  but operates by a sliding switch (Without heated seat)

1. Rear door switch circuit inspection (Without 
heated seat)

SE-125

2. Auto return cancel switch circuit inspection 
1 (Without heated seat)

SE-124

3. sliding sensor circuit inspection (Without 
heated seat)

SE-126

4. Replace rear power seat control unit. 

Symptom

Diagnoses / service procedure

Refer to page

POWER SEAT

SE-109

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D

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G

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A

B

SE

Power Seat Switch Circuit Inspection

EIS003UZ

1. 

CHECK FUSIBLE LINK 

Check 40A fusible link (letter H located in the fuse and fusible link box).
NOTE:
Refer to

SE-97, "Component Parts and Harness Connector Location"

 .

OK or NG

OK

>> GO TO 2.

NG

>> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse, refer to 

SE-

97, "Component Parts and Harness Connector Location"

 .

2. 

CHECK POWER SEAT POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect front power seat passenger side switch connector.

3.

Check voltage between front power seat passenger side switch
connector B342 terminal 16 (P) and ground.

OK or NG

OK

>> Check the condition of the harness and connector.

NG

>> Repair or replace harness between fuse and fusible link

box and front power seat passenger side switch.

Front Power Seat Passenger Side Power Supply Circuit Inspection

EIS003V0

1. 

 CHECK FRONT POWER SEAT PASSENGER SIDE POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect front power seat passenger side switch connector.

3.

Check voltage between front power seat passenger side switch
connector B342 terminal 16 (P) and ground.

OK or NG

OK

>> GO TO 2.

NG

>> Repair or replace harness between fuse and fusible link

box and front power seat passenger side switch.

16 (P) 

 Ground

:Battery voltage

PIIA3963E

16 (P) 

 Ground

: Battery voltage

PIIA3963E

SE-110

POWER SEAT

2. 

CHECK POWER SEAT SWITCH

1.

Connect front power seat passenger side switch connector.

2.

Check continuity between front power seat passenger side
switch connector.

OK or NG

OK

>> GO TO 3.

NG

>> Replace front power seat passenger side switch.

3. 

CHECK FRONT POWER SEAT PASSENGER SIDE GROUND CIRCUIT

1.

Disconnect front power seat passenger side switch connector.

2.

Check continuity between front power seat passenger side
switch connector B342 terminal 15A (B) and ground.

OK or NG

OK

>> Check connector.

NG

>> Repair or replace harness between front power seat

passenger side switch and ground.

Front Power Seat (Passenger Side) Sliding Circuit Inspection

EIS003V1

1. 

CHECK POWER SEAT SWITCH

1.

Turn ignition switch OFF.

2.

Disconnect front power seat (passenger side) switch connector.

3.

Check continuity between front power seat passenger side
switch as follows.

OK or NG

OK

>> GO TO 2.

NG

>> Replace front power seat passenger side switch.

Terminal

Condition

Continuity

16

15A

Sliding switch turn forward and backward.

YES

Reclining switch turn forward and backward.

YES

Lifting switch (front) fully up and fully down. 

YES

Lifting switch (rear) fully up and fully down. 

YES

Other than above

NO

PIIB0384E

15A (B) 

 Ground

:Continuity should exist.

PIIA3965E

Terminal

Condition

Continuity

1

15A

Sliding switch backward.

YES

16

Sliding switch forward.

YES

15A, 16

Other than above.

NO

8

15A

Sliding switch forward.

YES

16

Sliding switch backward.

YES

15A, 16

Other than above.

NO

PIIA3967E

 

 

 

 

 

 

 

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