Nissan X-Trail 32. Manual - part 902

P1715 INPUT SPEED SENSOR

EC-737

< DTC/CIRCUIT DIAGNOSIS >

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P1715 INPUT SPEED SENSOR

Description

INFOID:0000000010986444

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

DTC Description

INFOID:0000000010986445

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Harness or connectors (The CAN communication line is open or shorted.)
• Harness or connectors (Input speed sensor circuit is open or shorted.)
• TCM

FAIL-SAFE

Not applicable

DTC CONFIRMATION PROCEDURE

1.

CHECK DTC PRIORITY

If DTC P1715 is displayed with DTC UXXXX, P0335, P0340, P0603, P0604, P0605, P606, P0607, P060A, or
P060B, first perform the  trouble diagnosis for DTC UXXXX, P0335, P0340, P0603, P0604, P0605, P606,
P0607, P060A, or P060B.

Is applicable DTC detected?

YES

>> Perform diagnosis of applicable. Refer to 

EC-517, "DTC Index"

.

NO

>> GO TO 2.

2.

PRECONDITIONING

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

>> GO TO 3.

3.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Start engine and drive the vehicle at more than 50 km/h (31 MPH) for at least 5 seconds.

CAUTION:

Always drive vehicle at a safe speed.

2.

Check 1st trip DTC.

Is 1st trip DTC detected?

YES

>> Proceed to 

EC-737, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010986446

1.

CHECK DTC PRIORITY

If DTC P1715 is displayed with DTC UXXXX, P0335, P0340, P0603, P0604, P0605, P606, P0607, P060A, or
P060B, first perform the  trouble diagnosis for DTC UXXXX, P0335, P0340, P0603, P0604, P0605, P606,
P0607, P060A, or P060B.

Is applicable DTC detected?

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

P1715

IN PULY SPEED
(IN PULY SPEED)

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

EC-738

< DTC/CIRCUIT DIAGNOSIS >

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P1715 INPUT SPEED SENSOR

YES

>> Perform diagnosis of applicable. Refer to 

EC-517, "DTC Index"

.

NO

>> GO TO 2.

2.

CHECK DTC WITH TCM

Check DTC with TCM. Refer to 

TM-288, "DTC Index"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Perform trouble shooting relevant to DTC indicated.

3.

REPLACE TCM

Replace TCM. Refer to 

TM-415, "Removal and Installation"

.

>> INSPECTION END

P1805 BRAKE SWITCH

EC-739

< DTC/CIRCUIT DIAGNOSIS >

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P1805 BRAKE SWITCH

DTC Description

INFOID:0000000010986447

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Harness or connectors (Stop lamp switch circuit is open or shorted.)
• Stop lamp switch

FAIL-SAFE

ECM controls the electric throttle control actuator by regulating the throttle opening to a small range. There-
fore, acceleration will be poor.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON.

2.

Fully depress the brake pedal for at least 5 seconds.

3.

Erase the DTC.

4.

Check 1st trip DTC.

Is 1st trip DTC detected?

YES

>> Proceed to 

EC-739, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010986448

1.

CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect stop lamp switch harness connector.

3.

Check the voltage between stop lamp switch harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Perform the trouble diagnosis for power supply circuit.

2.

CHECK STOP LAMP SWITCH GROUND CIRCUIT

1.

Disconnect ECM harness connector.

2.

Check the continuity between stop lamp switch harness connector and ECM harness connector.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

P1805

BRAKE SW/CIRCUIT
(BRAKE SW/CIRCUIT)

A stop lamp switch signal is not sent to ECM for extremely long time while 
the vehicle is driving.

Vehicle condition

Driving condition

When engine is idling

Normal

When accelerating

Poor acceleration

+

−

Voltage

Stop lamp switch

Connector

Terminal

E115

1

Ground

Battery voltage

EC-740

< DTC/CIRCUIT DIAGNOSIS >

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P1805 BRAKE SWITCH

3.

Also check harness for short to ground and to power.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace error-detected parts.

3.

CHECK STOP LAMP SWITCH

Check the stop lamp switch. Refer to 

EC-733, "Component Inspection (Stop Lamp Switch)"

.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-44, "Intermittent Incident"

.

NO

>> Replace stop lamp switch. Refer to 

BR-21, "Exploded View"

.

Component Inspection (Stop Lamp Switch)

INFOID:0000000010986449

1.

CHECK STOP LAMP SWITCH-1

1.

Turn ignition switch OFF.

2.

Disconnect stop lamp switch harness connector.

3.

Check the continuity between stop lamp switch terminals as per the following conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 2.

2.

CHECK STOP LAMP SWITCH-2

1.

Adjust stop lamp switch installation. Refer to 

BR-22, "Inspection and Adjustment"

.

2.

Check the continuity between stop lamp switch terminals as per the following conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace stop lamp switch. Refer to 

BR-21, "Exploded View"

.

+

−

Continuity

Stop lamp switch

ECM

Connector

Terminal

Connector

Terminal

E115

2

E60

115

Existed

Stop lamp switch

Condition

Continuity

+

−

Terminals

1

 2

Brake pedal

Fully released

Not existed

Slightly de-
pressed

Existed

Stop lamp switch

Condition

Continuity

+

−

Terminals

1

 2

Brake pedal

Fully released

Not existed

Slightly de-
pressed

Existed