Nissan Quest E52. Manual - part 1056

THIRD SEAT FOLD SWITCH

SE-53

< DTC/CIRCUIT DIAGNOSIS >

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8.

CHECK SEATBACK LOCK RELEASE ACTUATOR RELAY (RH)

Check seatback lock release actuator relay (RH). 
Refer to 

SE-53, "Component Inspection (Seatback Lock Release Actuator Relay)"

.

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> Replace seatback lock release actuator relay (RH).

9.

CHECK THIRD SEAT FOLD SWITCH (RH)

Check third seat fold switch (RH). 
Refer to 

SE-53, "Component Inspection (Third Seat Fold Switch)"

.

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> Replace third seat fold switch (RH). Refer to 

SE-136, "Removal and Installation"

.

10.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-42, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection (Third Seat Fold Switch)

INFOID:0000000009652953

1.

CHECK THIRD SEAT FOLD SWITCH

1.

Turn ignition switch OFF.

2.

Remove third seat fold switch. Refer to 

SE-136, "Removal and Installation"

.

3.

Check third seat fold switch terminals under the following conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace third seat fold switch. Refer to 

SE-136, "Removal and Installation"

.

Component Inspection (Seatback Lock Release Actuator Relay)

INFOID:0000000009652954

1.

CHECK SEATBACK LOCK ACCTUATOR RELAY

1.

Turn ignition switch OFF.

2.

Remove seatback lock actuator relay.

3.

Check seatback lock actuator relay terminals under the following
conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace seatback lock actuator relay.

Terminal

Condition

Continuity

1

3

Third seat fold switch

FOLD

While being pressed

Existed

Other than the above

Not existed

2

RETURN

While being pressed

Existed

Other than the above

Not existed

Terminal

Condition

Continuity

3

5

12 V direct current supply between ter-
minals 1 and 2.

Existed

Not current supply

Not existed

PBIB0098E

SE-54

< DTC/CIRCUIT DIAGNOSIS >

VEHICLE SPEED SIGNAL CIRCUIT

VEHICLE SPEED SIGNAL CIRCUIT

Diagnosis Procedure

INFOID:0000000009652955

1.

CHECK VEHICLE SPEED SIGNAL

1.

Start engine.

2.

Drive the vehicle at more than 40 km/h (25 MPH).

CAUTION:

Always drive vehicle at a safe speed.
NOTE:
This procedure may be conducted with the drive wheels lifted in the shop or by driving the vehicle.
If a road test is expected to be easier, it is unnecessary to lift the vehicle.

3.

Check signal between seatback power return control unit harness connector and ground with an oscillo-
scope.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

CHECK VEHICLE SPEED SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect seatback power return control unit connector and combination meter connector.

3.

Check continuity between seatback power return control unit harness connector and combination meter
harness connector.

4.

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

Is the inspection result normal?

YES

>> Replace combination meter. Refer to 

MWI-93, "Removal and Installation"

.

NO

>> Repair or replace harness.

3.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-42, "Intermittent Incident"

.

>> INSPECTION END

(+)

(–)

Signal

(Reference value)

Seatback power return control unit

Connector

Terminal 

B488

24

Ground

JSNIA0012GB

Seatback power return control unit

Combination meter

Continuity

Connector

Terminal

Connector

Terminal

B488

24

M34

31

Existed

Seatback power return control unit

Ground

Continuity 

Connector

Terminal

B488

24

Not existed

SEATBACK ANGLE LIMIT SWITCH

SE-55

< DTC/CIRCUIT DIAGNOSIS >

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SEATBACK ANGLE LIMIT SWITCH

LH

LH : Diagnosis Procedure

INFOID:0000000009652956

1.

CHECK SEATBACK ANGLE LIMIT SWITCH (LH) INPUT SIGNAL

1.

Turn ignition switch OFF.

2.

Disconnect seatback angle limit switch (LH) connector.

3.

Check voltage between seatback angle limit switch (LH) harness connector and ground.

NOTE:
It is not low power consumption mode. 

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

CHECK SEATBACK ANGLE LIMIT SWITCH (LH) CIRCUIT

1.

Disconnect seatback power return control unit connector.

2.

Check continuity between seatback power return control unit harness connector and seatback angle limit
switch (LH) harness connector.

3.

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

Is the inspection result normal?

YES

>> Replace seatback power return control unit. Refer to 

SE-139, "Removal and Installation"

.

NO

>> Repair or replace harness.

3.

CHECK SEATBACK ANGLE LIMIT SWITCH (LH) GROUND CIRCUIT

1.

Disconnect seatback power return control unit connector and sector gear position limit switch connector.

2.

Check continuity between seatback power return control unit harness connector and seatback angle limit
switch (LH) harness connector.

3.

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

Is the inspection result normal?

YES

>> GO TO 4.

(+)

(–)

Voltage (V)

Seatback angle limit switch (LH)

Connector

Terminal 

B500

1

Ground

9 – 16

Seatback power return control unit

Seatback angle limit switch (LH)

Continuity

Connector

Terminal

Connector

Terminal

B488

29

B500

1

Existed

Seatback power return control unit

Ground

Continuity 

Connector

Terminal

B488

29

Not existed

Seatback power return control unit

Seatback angle limit switch (LH)

Continuity

Connector

Terminal

Connector

Terminal

B488

31

B500

2

Existed

Seatback power return control unit

Ground

Continuity 

Connector

Terminal

B488

31

Not existed

SE-56

< DTC/CIRCUIT DIAGNOSIS >

SEATBACK ANGLE LIMIT SWITCH

NO

>> Repair or replace harness.

4.

CHECK SEATBACK ANGLE LIMIT SWITCH (LH)

Check seatback angle limit switch (LH).
Refer to 

SE-57, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace seatback angle limit switch (LH) [reclining device assembly (LH)]. Refer to 

SE-122,

"Exploded View"

. 

5.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-42, "Intermittent Incident"

.

>> INSPECTION END

RH

RH : Diagnosis Procedure

INFOID:0000000009652957

1.

CHECK SEATBACK ANGLE LIMIT SWITCH (RH) INPUT SIGNAL

1.

Turn ignition switch OFF.

2.

Disconnect seatback angle limit switch (RH) connector.

3.

Check voltage between seatback angle limit switch (RH) harness connector and ground.

NOTE:
It is not low power consumption mode. 

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

CHECK SEATBACK ANGLE LIMIT SWITCH (RH) CIRCUIT

1.

Disconnect seatback power return control unit connector.

2.

Check continuity between seatback power return control unit harness connector and seatback angle limit
switch (RH) harness connector.

3.

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

Is the inspection result normal?

YES

>> Replace seatback power return control unit. Refer to 

SE-139, "Removal and Installation"

.

NO

>> Repair or replace harness.

3.

CHECK SEATBACK ANGLE LIMIT SWITCH (RH) GROUND CIRCUIT

1.

Disconnect seatback power return control unit connector and sector gear position limit switch connector.

2.

Check continuity between seatback power return control unit harness connector and seatback angle limit
switch (RH) harness connector.

(+)

(–)

Voltage (V)

Seatback angle limit switch (RH)

Connector

Terminal 

B496

1

Ground

9 – 16

Seatback power return control unit

Seatback angle limit switch (RH)

Continuity

Connector

Terminal

Connector

Terminal

B488

30

B496

1

Existed

Seatback power return control unit

Ground

Continuity 

Connector

Terminal

B488

30

Not existed