Infiniti EX35. Manual - part 1258

POWER RETURN MOTOR

SE-39

< COMPONENT DIAGNOSIS >

C

D

E

F

G

H

I

K

L

M

A

B

SE

N

O

P

YES

>> Replace rear seatback power return control unit. Refer to 

SE-105, "Removal and Installation"

.

NO

>> Repair or replace harness.

RH

RH : Description

INFOID:0000000003642201

Operate the rear seatback. 

RH : Component Function Check

INFOID:0000000003642202

1.

CHECK FUNCTION

Check that the rear seatback (RH) rises when pressing and holding the power return switch (RH) or rear seat-
back switch (RH) in UP direction.

Is the inspection result normal?

YES

>> Power return motor (RH) is OK.

NO

>> Refer to 

SE-39, "RH : Diagnosis Procedure"

.

RH : Diagnosis Procedure

INFOID:0000000003642203

1.

CHECK POWER RETURN MOTOR (RH) INPUT SIGNAL

1.

Turn ignition switch OFF.

2.

Check voltage between power return motor assembly (RH) harness connector and ground.

Is the inspection result normal?

YES

>> Replace power return motor assembly (RH) [reclining device assembly (RH)]. Refer to 

SE-98,

"Exploded View"

.

NO

>> GO TO 2.

2.

CHECK POWER RETURN MOTOR (RH) CIRCUIT

1.

Disconnect rear seatback power return control unit connector and power return motor assembly (RH) con-
nector.

2.

Check continuity between rear seatback power return control unit harness connector and power return
motor assembly (RH) harness connector. 

3.

Check continuity between rear seatback power return control unit harness connector and ground.

Is the inspection result normal?

(+)

(–)

Condition

Voltage (V)

(Approx.)

Power return motor assembly (RH)

Connector

Terminal

B504

20

Ground

During the power return motor (RH) reverse 
operation

Battery voltage

Other than the above

0

21

During the power return motor (RH) return op-
eration

Battery voltage

Other than the above

0

Rear seatback power return control unit 

Power return motor assembly (RH)

Continuity 

Connector

Terminal

Connector

Terminal

B227

7

B504

20

Existed

8

21

Rear seatback power return control unit 

Ground

Continuity

Connector

Terminal

B227

7

Not existed

8

SE-40

< COMPONENT DIAGNOSIS >

POWER RETURN MOTOR

YES

>> Replace rear seatback power return control unit. Refer to 

SE-105, "Removal and Installation"

.

NO

>> Repair or replace harness.

VEHICLE SPEED SIGNAL CIRCUIT

SE-41

< COMPONENT DIAGNOSIS >

C

D

E

F

G

H

I

K

L

M

A

B

SE

N

O

P

VEHICLE SPEED SIGNAL CIRCUIT

Description

INFOID:0000000003642204

Transmits vehicle speed signal to rear seatback power return control unit.

Component Function Check

INFOID:0000000003642205

1.

CHECK FUNCTION

Check that the rear seatback rises when pressing and holding the power return switch or rear seatback switch
in UP direction.
Is the inspection result normal?

YES

>> Vehicle speed signal circuit is OK.

NO

>> Refer to 

SE-41, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000003642206

1.

CHECK VEHICLE SPEED OPERATION

1.

Check speed meter operate normally.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Refer to

MWI-4, "Work flow"

.

2.

CHECK VEHICLE SPEED INPUT SIGNAL

1.

Turn ignition switch OFF.

2.

Check voltage between rear seatback power return control unit harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Refer to

MWI-4, "Work flow"

.

3.

CHECK VEHICLE SPEED SIGNAL CIRCUIT

1.

Disconnect rear seatback power return control unit connector and unified meter and A/C amp. connector.

2.

Check continuity between power return control unit harness connector and unified meter and A/C amp.
harness connector.

3.

Check continuity between rear seatback power return control unit harness connector and ground.

(+)

(–)

Condition

Voltage (V)

(Approx.)

Rear seatback power return control unit

Connector

Terminal 

B226

24

Ground

When vehicle speed is ap-
prox.40 km/h (25MPH)

NOTE:

Maximum voltage may be 12V due 

to specifications (connected units)

SKIA6649J

Rear seatback power return control unit

Unified meter and A/C amp.

Continuity

Connector

Terminal

Connector

Terminal

B226

24

M66

28

Existed

SE-42

< COMPONENT DIAGNOSIS >

VEHICLE SPEED SIGNAL CIRCUIT

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace harness.

4.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-38, "Intermittent Incident"

.

>> INSPECTION END

Rear seatback power return control unit

Ground

Continuity 

Connector

Terminal

B226

24

Not existed