Nissan Note E12. Manual - part 234

P1715 INPUT SPEED SENSOR

EC-275

< DTC/CIRCUIT DIAGNOSIS >

[HR16DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

P1715 INPUT SPEED SENSOR

Description

INFOID:0000000009022635

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

engine control.

DTC Logic

INFOID:0000000009022636

DTC DETECTION LOGIC

NOTE:

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

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

to 

EC-224, "DTC Logic"

.

• If DTC P1715 is displayed with DTC P0340, first perform the trouble diagnosis for DTC P0340. Refer

to 

EC-228, "DTC Logic"

.

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

to 

EC-249, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

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 2.

2.

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-275, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009022637

1.

CHECK DTC WITH TCM

Check DTC with TCM. Refer to 

TM-111, "DTC Index"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Perform trouble shooting relevant to DTC indicated.

2.

REPLACE TCM

Replace TCM. Refer to 

TM-235, "Removal and Installation"

.

>> INSPECTION END

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P1715

Input speed sensor
(TCM output)

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

• Harness or connectors

(The CAN communication line is open or shorted)

• Harness or connectors

(Input speed sensor circuit is open or shorted)

• TCM

EC-276

< DTC/CIRCUIT DIAGNOSIS >

[HR16DE]

P1720 VSS

P1720 VSS

Description

INFOID:0000000009022638

ECM receives two vehicle speed signals via the CAN communication line. One is sent from “ABS actuator and

electric unit (control unit)” via combination meter, and the other is from TCM (Transmission control module).

ECM uses these signals for engine control.

DTC Logic

INFOID:0000000009022639

DTC DETECTION LOGIC

NOTE:

• If DTC P1720 is displayed with DTC UXXXX, first perform the trouble diagnosis for DTC UXXXX.

• If DTC P1720 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer

to 

EC-249, "DTC Logic"

.

• If DTC P1720 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. Refer

to 

EC-251, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

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 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1. Start engine.

2. Drive vehicle at a speed of 20 km/h (12 MPH) or more for at least 5 seconds without depressing the brake

pedal.

3. Check 1st trip DTC.
Is 1st trip DTC detected?

YES

>> Proceed to 

EC-276, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009022640

1.

CHECK DTC WITH TCM

Check DTC with TCM. Refer to 

TM-111, "DTC Index"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Perform trouble shooting relevant to DTC indicated.

2.

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

Check DTC with “ABS actuator and electric unit (control unit)”. Refer to 

BRC-26, "DTC Index"

.

Is the inspection result normal?

DTC No. Trouble diagnosis name

DTC detecting condition

Possible cause

P1720

Vehicle speed sensor
(TCM output)

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

• Harness or connectors

(Secondary speed sensor circuit is open or shorted.)
(Wheel sensor circuit is open or shorted.)

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

P1720 VSS

EC-277

< DTC/CIRCUIT DIAGNOSIS >

[HR16DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

YES

>> GO TO 3.

NO

>> Perform trouble shooting relevant to DTC indicated.

3.

CHECK COMBINATION METER FUNCTION

Check combination meter function. Refer to 

MWI-20, "DTC Index"

.

>> INSPECTION END

EC-278

< DTC/CIRCUIT DIAGNOSIS >

[HR16DE]

P1805 BRAKE SWITCH

P1805 BRAKE SWITCH

DTC Logic

INFOID:0000000009022641

DTC DETECTION LOGIC

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 DTC.

4. Check 1st trip DTC.
Is 1st trip DTC detected?

YES

>> Proceed to 

EC-278, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009022642

1.

CHECK STOP LAMP SWITCH CIRCUIT

1. Turn ignition switch OFF.

2. Check the stop lamp when depressing and releasing the brake pedal.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 2.

2.

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 3.

NO

>> Perform the trouble diagnosis for power supply circuit.

3.

CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Disconnect stop lamp switch harness connector.

2. Disconnect ECM harness connector.

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

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P1805

Brake switch

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

• Harness or connectors

(Stop lamp switch circuit is open or shorted.)

• Stop lamp switch

Brake pedal

Stop lamp

Fully released

Not illuminated

Slightly depressed

Illuminated

Stop lamp switch

Ground

Voltage

Connector

Terminal

E13 (CVT)

E57 (M/T)

1

Ground

Battery voltage