Nissan Pathfinder (2010 year). Manual - part 282

EC-348

< COMPONENT DIAGNOSIS >

[VQ40DE]

P1572 ASCD BRAKE SWITCH

4. Also check harness for short to ground and short to power.
OK or NG

OK

>> GO TO 6.

NG

>> Repair open circuit or short to ground or short to power in harness or connectors.

6.

CHECK ASCD BRAKE SWITCH

Refer to 

EC-349, "Component Inspection"

.

OK or NG

OK

>> GO TO 11.

NG

>> Replace ASCD brake switch.

7.

CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect stop lamp switch harness connector.

3. Check voltage between stop lamp switch terminal 1 and ground

with CONSULT-III or tester.

OK or NG

OK

>> GO TO 9.

NG

>> GO TO 8.

8.

DETECT MALFUNCTIONING PART

Check the following.

• Fuse block (J/B) connector E160

• 10 A fuse (No.20)

• Harness for open or short between stop lamp switch and battery

>> Repair open circuit or short to ground or short to power in harness or connectors.

9.

CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Disconnect ECM harness connector.

2. Check harness continuity between ECM terminal 101 and stop lamp switch terminal 2.

Refer to Wiring Diagram.

3. Also check harness for short to ground and short to power.
OK or NG

OK

>> GO TO 10.

NG

>> Repair open circuit or short to ground or short to power in harness or connectors.

10.

CHECK STOP LAMP SWITCH

BBIA0560E

Voltage: Battery voltage

PBIB1184E

Continuity should exist.

2010 Pathfinder

P1572 ASCD BRAKE SWITCH

EC-349

< COMPONENT DIAGNOSIS >

[VQ40DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

Refer to 

EC-349, "Component Inspection"

.

OK or NG

OK

>> GO TO 11.

NG

>> Replace stop lamp switch.

11.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-37, "Intermittent Incident"

.

>>

INSPECTION END

Component Inspection

INFOID:0000000005257368

ASCD BRAKE SWITCH

1. Turn ignition switch OFF.
2. Disconnect ASCD brake switch harness connector.
3. Check harness continuity between ASCD brake switch terminals

1 and 2 under the following conditions.

If NG, adjust ASCD brake switch installation, refer to 

BR-17,

"Inspection and Adjustment - Standard Pedal"

and perform step

3 again.

STOP LAMP SWITCH

1. Turn ignition switch OFF.
2. Disconnect stop lamp switch harness connector.
3. Check harness continuity between stop lamp switch terminals 1

and 2 under the following conditions.

If NG, adjust stop lamp switch installation, refer to 

BR-17,

"Inspection and Adjustment - Standard Pedal"

, and perform step

3 again.

Condition

Continuity

When brake pedal: Fully released.

Should exist.

When brake pedal: Slightly depressed.

Should not exist.

SEC023D

Condition

Continuity

When brake pedal: Fully released.

Should not exist.

When brake pedal: Slightly depressed.

Should exist.

PBIB1185E

2010 Pathfinder

EC-350

< COMPONENT DIAGNOSIS >

[VQ40DE]

P1574 ASCD VEHICLE SPEED SENSOR

P1574 ASCD VEHICLE SPEED SENSOR

Component Description

INFOID:0000000005257369

The ECM receives two vehicle speed sensor signals via CAN communication line. One is sent from combina-

tion meter, and the other is from TCM (Transmission control module). The ECM uses these signals for ASCD

control. Refer to 

EC-41, "System Description"

 for ASCD functions.

On Board Diagnosis Logic

INFOID:0000000005257370

This self-diagnosis has the one trip detection logic.

The MIL will not illuminate for this diagnosis.

NOTE:

•

If DTC P1574 is displayed with DTC UXXXX, first perform the trouble diagnosis for DTC UXXXX.

•

If DTC P1574 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. Refer

to 

EC-308, "On Board Diagnosis Logic"

.

•

If DTC P1574 is displayed with DTC P0500, first perform the trouble diagnosis for DTC P0500. Refer

to 

EC-293, "Description"

.

•

If DTC P1574 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer

to 

EC-306, "Component Description"

.

DTC Confirmation Procedure

INFOID:0000000005257371

CAUTION:

Always drive vehicle at a safe speed.

NOTE:

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-

ing the next step.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:

Step 3 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.

1. Start engine.
2. Drive the vehicle at more than 40 km/h (25 MPH).
3. Check DTC.
4. If DTC is detected, go to 

EC-350, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000005257372

1.

CHECK DTC WITH TCM

Check DTC with TCM. Refer to 

TM-34, "OBD-II Diagnostic Trouble Code (DTC)"

.

OK or NG

OK

>> GO TO 2.

NG

>> Perform trouble shooting relevant to DTC indicated.

2.

CHECK DTC WITH “ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)”

Refer to 

BRC-4, "Work Flow"

.

DTC No.

Trouble Diagnosis 

Name

DTC Detecting Condition

Possible Cause

P1574
1574

ASCD vehicle speed 
sensor

The difference between the two vehicle speed 
signals is out of the specified range.

• Harness or connectors

(The CAN communication line is open or 
shorted.)

• Combination meter
• ABS actuator and electric unit (control unit)
• Wheel sensor
• TCM
• ECM

2010 Pathfinder

P1574 ASCD VEHICLE SPEED SENSOR

EC-351

< COMPONENT DIAGNOSIS >

[VQ40DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace.

3.

CHECK COMBINATION METER FUNCTION

Refer to 

GI-33, "Work Flow"

.

>>

INSPECTION END

2010 Pathfinder

EC-352

< COMPONENT DIAGNOSIS >

[VQ40DE]

P1715 INPUT SPEED SENSOR

P1715 INPUT SPEED SENSOR

Description

INFOID:0000000005257373

ECM receives input speed sensor signal from TCM through CAN communication line. ECM uses this signal for

engine control.

On Board Diagnosis Logic

INFOID:0000000005257374

NOTE:

•

If DTC P1715 is displayed with DTC UXXXX first perform the trouble diagnosis for DTC UXXXX.

•

If DTC P1715 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. Refer

to 

EC-308, "On Board Diagnosis Logic"

.

•

If DTC P1715 is displayed with DTC P0335, first perform the trouble diagnosis for DTC P0335. Refer

to 

EC-218, "Component Description"

.

•

If DTC P1715 is displayed with DTC P0340, P0345 first perform the trouble diagnosis for DTC P0340,

P0345. Refer to 

EC-222, "Component Description"

.

•

If DTC P1715 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer

to 

EC-306, "Component Description"

.

The MIL will not illuminates for this diagnosis.

Diagnosis Procedure

INFOID:0000000005257375

1.

CHECK DTC WITH TCM

Check DTC with TCM. Refer to 

TM-34, "OBD-II Diagnostic Trouble Code (DTC)"

.

OK or NG

OK

>> GO TO 2.

NG

>> Perform trouble shooting relevant to DTC indicated.

2.

REPLACE TCM

Replace TCM. 

>>

INSPECTION END

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P1715
1715

Input speed sensor
(TCM output)

Input speed sensor signal is different from 
the theoretical value calculated by ECM 
from output speed sensor signal and en-
gine rpm signal.

• Harness or connectors

(The CAN communication line is open or short-
ed)

• Harness or connectors

(Input speed sensor circuit is open or shorted)

• TCM

2010 Pathfinder

P1800 VIAS CONTROL SOLENOID VALVE 1

EC-353

< COMPONENT DIAGNOSIS >

[VQ40DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

P1800 VIAS CONTROL SOLENOID VALVE 1

Component Description

INFOID:0000000005257376

The VIAS control solenoid valve cuts the intake manifold vacuum

signal for power valve control. It responds to ON/OFF signals from

the ECM. When the solenoid is off, the vacuum signal from the

intake manifold is cut. When the ECM sends an ON signal the coil

pulls the plunger downward and sends the vacuum signal to the

power valve actuator.

On Board Diagnosis Logic

INFOID:0000000005257377

The MIL will not illuminate for this self-diagnosis.

DTC Confirmation Procedure

INFOID:0000000005257378

NOTE:

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-

ing the next step.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is between 11V at idle.

1. Start engine and let it idle for at least 5 seconds.
2. Check 1st trip DTC.
3. If 1st trip DTC is detected, go to 

EC-353, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000005257379

1.

CHECK VIAS CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect VIAS control solenoid valve harness connector.

3. Turn ignition switch ON.

BBIA0569E

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P1800
1800

VIAS control solenoid valve cir-
cuit 

An excessively low or high voltage signal 
is sent to ECM through the valve

• Harness or connectors

(The solenoid valve circuit is open or 
shorted.)

• VIAS control solenoid valve

BBIA0569E

2010 Pathfinder

EC-354

< COMPONENT DIAGNOSIS >

[VQ40DE]

P1800 VIAS CONTROL SOLENOID VALVE 1

4. Check voltage between terminal 1 and ground with CONSULT-

III or tester.

OK or NG

OK

>> GO TO 3.

NG

>> GO TO 2.

2.

DETECT MALFUNCTIONING PART

Check the following.

• Harness connectors E2, F32

• Harness for open or short between VIAS control solenoid valve and IPDM E/R

• Harness for open or short between VIAS control solenoid valve and ECM

>> Repair harness or connectors.

3.

CHECK VIAS CONTROL SOLENOID VALVE OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Check harness continuity between ECM terminal 29 and VIAS control solenoid valve terminal 2.

Refer to Wiring Diagram.

4. Also check harness for short to ground and short to power.
OK or NG

OK

>> GO TO 4.

NG

>> Repair open circuit or short to ground or short to power in harness or connectors.

4.

CHECK VIAS CONTROL SOLENOID VALVE

Refer to 

EC-354, "Component Inspection"

.

OK or NG

OK

>> GO TO 5.

NG

>> Replace VIAS control solenoid valve.

5.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-37, "Intermittent Incident"

.

>>

INSPECTION END

Component Inspection

INFOID:0000000005257380

VIAS CONTROL SOLENOID VALVE

 With CONSULT-III

1. Reconnect harness connectors disconnected.
2. Turn ignition switch ON.
3. Perform “VIAS SOL VALVE” in “ACTIVE TEST” mode.

Voltage: Battery voltage

PBIB0173E

Continuity should exist.

2010 Pathfinder

P1800 VIAS CONTROL SOLENOID VALVE 1

EC-355

< COMPONENT DIAGNOSIS >

[VQ40DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

4. Check air passage continuity and operation delay time under the

following conditions.

Operation takes less than 1 second.

 With GST

Check air passage continuity and operation delay time under the fol-

lowing conditions.

Operation takes less than 1 second.

Condition

VIAS SOL VALVE

Air passage continuity 

between (A) and (B)

Air passage continuity 

between (A) and (C)

ON

Yes

No

OFF

No

Yes

JMBIA0180ZZ

Condition

Air passage continuity 

between (A) and (B)

Air passage continuity 

between (A) and (C)

12V direct current supply 
between terminals 1 and 2

Yes

No

No supply

No

Yes

PBIB2532E

2010 Pathfinder