Nissan Qashqai (2007-2010). Manual — part 575

P0720 VEHICLE SPEED SENSOR CVT (SECONDARY SPEED SENSOR)

TM-235

< COMPONENT DIAGNOSIS >

[CVT: RE0F10A]

C

E

F

G

H

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L

M

A

B

TM

N

O

P

3.

If OK, check the pulse when vehicle cruises.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> GO TO 2.

2.

CHECK POWER AND SENSOR GROUND

1.

Turn ignition switch OFF.

2.

Disconnect the output speed sensor (secondary speed sensor) harness connector.

3.

Turn ignition switch ON.

4.

Check voltage between output speed sensor (secondary speed sensor) harness connector terminals.

5.

Check voltage between output speed sensor (secondary speed sensor) harness connector terminal and
ground.

6.

If OK, check harness for short to ground and short to power.

7.

Reinstall any part removed.

Is the inspection result normal?

YES

>> GO TO 3.

NO - 1 >> Battery voltage is not supplied between terminals 1 and 3, neither terminal 3 and ground: GO TO

4.

NO - 2 >> Battery voltage is not supplied between terminals 1 and 3 only: GO TO 5.

3.

CHECK HARNESS BETWEEN TCM AND OUTPUT SPEED SENSOR (SECONDARY SPEED SENSOR)

1.

Turn ignition switch OFF.

2.

Disconnect TCM connector.

3.

Check continuity between TCM connector terminal and output speed sensor (secondary speed sensor)
harness connector terminal.

4.

If OK, check harness for short to ground and short to power.

5.

Reinstall any part removed.

Is the inspection result normal?

TCM connector

Voltage (Approx.)

Connector

Terminal

F25

7

46

Battery voltage

48

TCM connector

Condition

Data (Approx.)

Connector

Terminal

F25

34

When running at 20 km/h (12 MPH) in “D” position, use the CONSULT-III pulse fre-
quency measuring function.

CAUTION:

Connect the data link connector to the vehicle-side diagnosis connector.

500 Hz

Output speed sensor (Secondary speed sensor) harness connector

Voltage (Approx.)

Connector

Terminal

F19

1

3

Battery voltage

Output speed sensor (Secondary speed sensor) harness connector

Ground

Voltage (Approx.)

Connector

Terminal

F19

3 Battery

voltage

TCM connector

Output speed sensor (Secondary speed sensor) harness connector

Continuity

Connector

Terminal

Connector

Terminal

F25

34

F19

2

Existed

TM-236

< COMPONENT DIAGNOSIS >

[CVT: RE0F10A]

P0720 VEHICLE SPEED SENSOR CVT (SECONDARY SPEED SENSOR)

YES

>> GO TO 6.

NO

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

4.

CHECK HARNESS BETWEEN TCM AND OUTPUT SPEED SENSOR (SECONDARY SPEED SENSOR)

(POWER)

1.

Turn ignition switch OFF.

2.

Disconnect TCM connector.

3.

Check continuity between TCM connector terminals and output speed sensor (secondary speed sensor)
harness connector terminal.

4.

If OK, check harness for short to ground and short to power.

5.

Reinstall any part removed.

Is the inspection result normal?

YES

>> 10 A fuse (No. 55, located in the IPDM E/R) or ignition switch are malfunctioning.

NO

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

5.

CHECK HARNESS BETWEEN TCM AND OUTPUT SPEED SENSOR (SECONDARY SPEED SENSOR)

(SENSOR GROUND)

1.

Turn ignition switch OFF.

2.

Disconnect TCM connector.

3.

Check continuity between TCM connector terminal and output speed sensor (secondary speed sensor)
harness connector terminal.

4.

If OK, check harness for short to ground and short to power.

5.

Reinstall any part removed.

Is the inspection result normal?

YES

>> GO TO 7.

NO

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

6.

CHECK THE TCM SHORT

Replace same type TCM, perform self-diagnosis check. Erase self-diagnostic results and then drive the vehi-
cle [more than 40 km/h (25 MPH)], perform self-diagnosis check. Refer to

TM-234, "DTC Logic"

.

Is “P0720 VEH SPD SEN/CIR AT” detected again?

YES

>> Replace the secondary speed sensor. Refer to

TM-340, "Exploded View"

.

NO

>> Replace the TCM. Refer to

TM-325, "Exploded View"

.

7.

CHECK TCM

Check TCM input/output signals. Refer to

TM-285, "Reference Value"

.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to

GI-39, "Intermittent Incident"

.

NO

>> Replace TCM. Refer to

TM-325, "Exploded View"

.

IPDM E/R

Output speed sensor (Secondary speed sensor) harness connector

Continuity

Connector

Terminal

Connector

Terminal

E11

16

F19

3

Existed

TCM connector

Output speed sensor (Secondary speed sensor) harness connector

Continuity

Connector

Terminal

Connector

Terminal

F25

7

F19

1

Existed

P0725 ENGINE SPEED SIGNAL

TM-237

< COMPONENT DIAGNOSIS >

[CVT: RE0F10A]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

P0725 ENGINE SPEED SIGNAL

Description

INFOID:0000000000988667

The engine speed signal is transmitted from ECM to TCM by CAN communication line.

DTC Logic

INFOID:0000000000988668

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

CAUTION:

Always drive vehicle at a safe speed.
NOTE:
If “DTC CONFIRMATION PROCEDURE” has been previously performed, always turn ignition switch
OFF and wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.

1.

CHECK DTC DETECTION

With CONSULT-III

1.

Turn ignition switch ON.

2.

Select “DATA MONITOR”.

3.

Start engine and maintain the following conditions for at least 10 consecutive seconds.

Is “P0725 ENGINE SPEED SIG” detected?

YES

>> Go to

TM-237, "Diagnosis Procedure"

.

NO

>> Check intermittent incident. Refer to

GI-39, "Intermittent Incident"

.

Diagnosis Procedure

INFOID:0000000000988669

1.

CHECK DTC WITH ECM

With CONSULT-III

1.

Turn ignition switch ON.

2.

Select “SELF-DIAG RESULTS” mode for “ENGINE” with CONSULT-III. Refer to

EC-719, "CONSULT-III

Function"

(WITH EURO-OBD),

EC-1054, "CONSULT-III Function"

(WITHOUT EURO-OBD).

Is the inspection result normal?

OK

>> GO TO 2.

NG

>> Check the DTC detected item. Refer to

EC-719, "CONSULT-III Function"

(WITH EURO-OBD),

EC-1054, "CONSULT-III Function"

(WITHOUT EURO-OBD).

2.

CHECK DTC WITH TCM

With CONSULT-III

Select “SELF-DIAG RESULTS” mode for “TRANSMISSION” with CONSULT-III. Refer to

TM-216, "CONSULT-

III Function (TRANSMISSION)"

.

Is the inspection result normal?

OK

>> GO TO 3.

NG

>> Check the DTC detected item. Refer to

TM-216, "CONSULT-III Function (TRANSMISSION)"

.

3.

CHECK INPUT SIGNALS

DTC

Item

(CONSULT-III screen term)

Malfunction is detected when...

Possible cause

P0725

ENGINE SPEED SIG

• TCM does not receive the

CAN communication signal
from the ECM.

• Engine speed is too low while

driving.

• Harness or connectors

(The ECM to the TCM circuit
is open or shorted.)

PRI SPEED SEN

: More than 1000 rpm

TM-238

< COMPONENT DIAGNOSIS >

[CVT: RE0F10A]

P0725 ENGINE SPEED SIGNAL

With CONSULT-III

1.

Start engine.

2.

Select “DATA MONITOR”.

3.

While monitoring “ENG SPEED SIG”, check for engine speed change corresponding to “ACC PEDAL
OPEN”.

Is the inspection result normal?

OK

>> GO TO 4.

NG

>> Check ignition signal circuit. Refer to

EC-929, "Description"

(WITH EURO-OBD),

EC-1208,

"Description"

(WITHOUT EURO-OBD).

4.

CHECK TCM

Check TCM input/output signals. Refer to

TM-285, "Reference Value"

.

Is the inspection result normal?

OK

>> Check intermittent incident. Refer to

GI-39, "Intermittent Incident"

.

NG

>> Replace the TCM. Refer to

TM-325, "Exploded View"

.

Item name

Condition

Display value

ENG SPEED SIG

Engine running

Closely matches the tachometer reading.

ACC PEDAL OPEN

Released accelerator pedal – Fully depressed accelerator pedal

0.0/8 – 8.0/8