Infiniti G37 Coupe. Manual - part 1093

SE-40

< COMPONENT DIAGNOSIS >

SLIDING SWITCH

SLIDING SWITCH

SEATBACK

SEATBACK : Description

INFOID:0000000001848726

Sliding switch is equipped on the seat back. The operation signal inputted to passenger seat control unit when
sliding switch (seat back) is operated.

SEATBACK : Component Function Check

INFOID:0000000001848727

1.

CHECK SLIDING SWITCH (SEAT BACK) FUNCTION

Check seat sliding operation with sliding switch (seat back).

Is the inspection results normal?

YES

>> Power seat switch is OK.

NO

>> Refer to 

SE-40, "SEATBACK : Diagnosis Procedure"

.

SEATBACK : Diagnosis Procedure

INFOID:0000000001848763

1.

CHECK SLIDING SWITCH (SEAT BACK) SIGNAL

1.

Turn ignition switch ON.

2.

Check voltage between passenger seat control unit harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> GO TO 2.

2.

CHECK SLIDING SWITCH (SEAT BACK) CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect passenger seat control unit connector and sliding switch (seat back) connector.

3.

Check continuity between passenger seat control unit harness connector and sliding switch (seat back)
harness connector.

4.

Check continuity between passenger seat control unit harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness.

3.

CHECK PASSENGER SEAT CONTROL UNIT OUTPUT

1.

Connect passenger seat control unit connector.

Passenger seat control 

unit

connector

Terminals

Condition

Voltage (V)

(Approx.)

(+)

(–)

B552

11

Ground

Sliding switch 
(seat back)

Operate (backward)

0

Release

Battery voltage

26

Operate (forward)

0

Release

Battery voltage

Passenger seat control unit

connector

Terminal

Sliding switch (seat back)

connector

Terminal

Continuity

B552

11

B561

11

Existed

26

26

Passenger seat control unit

connector

Terminal

Ground

Continuity 

B552

11

Not existed

26

SLIDING SWITCH

SE-41

< COMPONENT DIAGNOSIS >

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2.

Turn ignition switch ON.

3.

Check voltage between passenger seat control unit harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Replace passenger seat control unit.

4.

CHECK SLIDING SWITCH (SEAT BACK) GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Check continuity between sliding switch (seat back) harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace harness.

5.

CHECK SLIDING SWITCH (SEAT BACK)

Refer to 

SE-41, "SEATBACK : Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Replace power seat switch.

6.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-38, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace passenger seat control unit.

NO

>> Repair or replace malfunctioning part.

SEATBACK : Component Inspection

INFOID:0000000001848764

1.

CHECK SLIDING SWITCH

1.

Turn ignition switch OFF.

2.

Disconnect sliding switch (seat back) connector.

3.

Check continuity between sliding switch (seat back) terminals.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace sliding switch (seat back).

Passenger seat control unit

connector

Terminals

Voltage (V)

(Approx.)

(+)

(–)

B552

11

Ground

Battery voltage

26

Sliding switch (seat back)

connector

Terminal

Ground

Continuity 

B561

32

Ground

Existed

Terminal

Condition

Continuity

Sliding switch (seat back)

32

11

Sliding switch

Operate
(backward)

Existed

Release

Not existed

26

Sliding switch

Operate
 (forward)

Existed

Release

Not existed

SE-42

< COMPONENT DIAGNOSIS >

FORWARD SWITCH

FORWARD SWITCH

DRIVER SIDE

DRIVER SIDE : Description

INFOID:0000000001751582

Forward switch is installed on seat back frame. Forward switch detects condition of seat back.

DRIVER SIDE : Component Function Check

INFOID:0000000001751583

1.

CHECK FUNCTION

1.

Select “FORWARD SW” in “Data Monitor” mode with CONSULT-III. 

2.

Check the forward switch signal under the following condition.

Is the indication normal?

YES

>> INSPECTION END

NO

>> Refer to  

SE-42, "DRIVER SIDE : Diagnosis Procedure"

.

DRIVER SIDE : Diagnosis Procedure

INFOID:0000000001751584

1.

CHECK FORWARD SWITCH SIGNAL

1.

Turn ignition switch OFF.

2.

Check voltage between driver seat control unit harness connector and ground.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-38, "Intermittent Incident"

.

NO

>> GO TO 2.

2.

CHECK FORWARD SWITCH CIRCUIT

1.

Disconnect driver seat control unit connector and forward switch connector.

2.

Check continuity between driver seat control unit harness connector and forward switch harness connec-
tor.

3.

Check continuity between driver seat control unit harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness.

Test item

Condition

Status

FORWARD SW

Driver side seat back

Folded up

ON

Folded down

OFF

Driver seat control unit

Ground

Condition

Voltage (V)

(Approx.)

Connector

Terminal

B504

41

Ground

Seat back is folded down and 
power walk-in switch is pressed. 

0

Seat back is folded up and power 
walk-in switch is pressed. 

5

Seat back is folded up and seat 
reclining switch is operated. 

Battery voltage

Driver seat control unit

Forward switch

Continuity

Connector

Terminal

Connector

Terminal

B504

41

B512

41

Existed

Driver seat control unit

Ground

Continuity 

Connector

Terminal

B504

41

Ground

Not existed

FORWARD SWITCH

SE-43

< COMPONENT DIAGNOSIS >

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3.

FORWARD SWITCH GROUND CIRCUIT

Check continuity between forward switch harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace harness.

4.

CHECK DRIVER SEAT CONTROL UNIT OUTPUT

1.

Connect driver seat control unit connector.

2.

Check voltage between driver seat control unit harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace driver seat control unit. Refer to 

SE-164, "Removal and Installation"

.

5.

CHECK FORWARD SWITCH

Refer to 

SE-43, "DRIVER SIDE : Component Inspection"

.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-38, "Intermittent Incident"

.

NO

>> Replace forward switch. (Built in seat back frame.)

DRIVER SIDE : Component Inspection

INFOID:0000000001751585

1.

CHECK FORWARD SWITCH

1.

Turn ignition switch OFF.

2.

Disconnect forward switch connector.

3.

Check continuity between forward switch terminals.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace forward switch. (Built in seat back frame.)

PASSENGER SIDE

PASSENGER SIDE : Description

INFOID:0000000001831165

Forward switch is installed on seat back frame. Forward switch detects condition of seat back.

PASSENGER SIDE : Diagnosis Procedure

INFOID:0000000001770917

1.

CHECK FORWARD SWITCH SIGNAL

1.

Turn ignition switch OFF.

2.

Check voltage between passenger seat control unit harness connector and ground.

Forward switch

Ground

Continuity

Connector

Terminal

B512

32

Ground

Existed

Driver seat control unit

Ground

Voltage (V)

(Approx.)

Connector

Terminal

B504

41

Ground

5

Forward switch

Condition

Continuity

Terminal

41

32

Driver side seat 
back

Folded up

Not existed

Folded down

Existed