Infiniti G37 Coupe. Manual - part 19

ADP-70

< COMPONENT DIAGNOSIS >

LIFTING SWITCH (FRONT)

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness.

3.

CHECK DRIVER SEAT CONTROL UNIT OUTPUT

1.

Connect the driver seat control unit connector.

2.

Turn ignition switch ON.

3.

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

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Replace driver seat control unit.

4.

CHECK LIFTING SWITCH (FRONT)

Refer to 

ADP-70, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace power seat switch.

5.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-38, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace driver seat control unit.

NO

>> Repair or replace the malfunctioning part.

Component Inspection

INFOID:0000000001693693

1.

CHECK LIFTING SWITCH (FRONT)

1.

Turn ignition switch OFF.

2.

Disconnect power seat switch (lifting switch front) connector.

3.

Check continuity between power seat switch (lifting switch front) terminals.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace power seat switch.

Driver seat control unit

connector

Terminal

Ground

Continuity 

B503

13

Not existed

28

Driver seat control unit

connector

Terminals 

Voltage (V) 

(Approx.)

(+)

(–)

B503

13

Ground

Battery voltage

28

Terminal

Condition

Continuity

Power seat switch (lifting switch front)

32

13

Lifting switch front (down)

Operate

Existed

Release

Not existed

28

Lifting switch front (up)

Operate

Existed

Release

Not existed

LIFTING SWITCH (REAR)

ADP-71

< COMPONENT DIAGNOSIS >

C

D

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F

G

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ADP

N

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LIFTING SWITCH (REAR)

Description

INFOID:0000000001693694

Lifting switch (rear) is equipped to the power seat switch on the seat cushion side surface. The operation sig-
nal is inputted to the driver seat control unit when the lifting switch (rear) is operated.

Component Function Check

INFOID:0000000001693695

1.

CHECK FUNCTION

1.

Select “LIFT RR SW-UP”, “LIFT RR SW-DN” in “Data Monitor” mode with CONSULT-III. 

2.

Check lifting switch (rear) signal under the following conditions.

Is the indication normal?

YES

>> INSPECTION END

NO

>> Perform diagnosis procedure. Refer to 

ADP-71, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000001693696

1.

CHECK LIFTING SWITCH (REAR) SIGNAL

1.

Turn ignition switch ON.

2.

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

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 2.

2.

CHECK LIFTING SWITCH (REAR) CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect driver seat control unit connector and power seat switch connector.

3.

Check continuity between driver seat control unit harness connector and power seat switch harness con-
nector.

4.

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

Monitor item

Condition

Status

LIFT RR SW-UP

Lifting switch rear (up)

Operate

ON

Release

OFF

LIFT RR SW-DN

Lifting switch rear  (down)

Operate

ON

Release

OFF

Driver seat control unit

connector

Terminals 

Condition

Voltage (V) 

(Approx.)

(+)

(–)

B503

14

Ground

Lifting switch
(rear)

Operate (down)

0

Release

Battery voltage

29

Operate (up)

0

Release

Battery voltage

Driver seat control unit

connector

Terminal

Power sear switch

connector

Terminal

Continuity

B503

14

B510

14

Existed

29

29

ADP-72

< COMPONENT DIAGNOSIS >

LIFTING SWITCH (REAR)

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness.

3.

CHECK DRIVER SEAT CONTROL UNIT OUTPUT

1.

Connect the driver seat control unit connector.

2.

Turn ignition switch ON.

3.

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

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Replace driver seat control unit.

4.

CHECK LIFTING SWITCH (REAR)

Refer to 

ADP-72, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace power seat switch.

5.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-38, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace driver seat control unit.

NO

>> Repair or replace the malfunctioning part. 

Component Inspection

INFOID:0000000001693697

1.

CHECK LIFTING SWITCH (REAR)

1.

Turn ignition switch OFF.

2.

Disconnect power seat switch (lifting switch rear) connector.

3.

Check continuity between power seat switch (lifting switch rear) terminals.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace power seat switch.

Driver seat control unit

connector

Terminal

Ground

Continuity 

B503

14

Not existed

29

Driver seat control unit

connector

Terminals 

Voltage (V) 

(Approx.)

(+)

(–)

B503

14

Ground

Battery voltage

29

Terminal

Condition

Continuity

Power seat switch (lifting switch rear)

32

14

Lifting switch rear (down)

Operate

Existed

Release

Not existed

29

Lifting switch rear (up)

Operate

Existed

Release

Not existed

FORWARD SWITCH

ADP-73

< COMPONENT DIAGNOSIS >

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D

E

F

G

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ADP

N

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FORWARD SWITCH

Description

INFOID:0000000001838029

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

Component Function Check

INFOID:0000000001838030

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

>> Perform diagnosis procedure. Refer to  

ADP-73, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000001838031

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.

3.

FORWARD SWITCH GROUND CIRCUIT

Check continuity between forward switch harness connector and ground.

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

Driver side 

seat back

Folded up

5

Folded down

0

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