Nissan Primera P11. Instruction — part 17

Diagnostic Procedure

NCAT0039

1

CHECK SECONDARY SPEED SENSOR

Refer to “Component Inspection” AT-65.

OK or NG

OK (With CONSULT-II)

©

GO TO 2.

OK (Without CONSULT-II)

©

GO TO 3.

NG

©

Repair or replace secondary speed sensor.

2

CHECK INPUT SIGNAL (With CONSULT-II)

With CONSULT-II

1. Start engine.
2. Select “ECU INPUT SIGNALS” in “DATA MONITOR” mode for “CVT” with CONSULT-II.
3. Read out the value of “VEHICLE SPEED” while driving.

Check the value changes according to driving speed.

OK or NG

OK

©

GO TO 4.

NG

©

Check the following items:

I

Harness for short or open between TCM, ECM and secondary speed sensor (Main
harness)

I

Ground circuit for ECM
Refer to EC section (“TROUBLE DIAGNOSIS FOR POWER SUPPLY”).

3

CHECK DTC

Perform Diagnostic Trouble Code (DTC) confirmation procedure, AT-62.

OK or NG

OK

©

INSPECTION END

NG

©

1. Perform TCM input/output signal inspection.
2. If NG, recheck TCM pin terminals for damage or loose connection with harness con-

nector.

Component Inspection

NCAT0040

SECONDARY SPEED SENSOR

NCAT0040S01

1.

Jacking up the vehicle.

2.

Check pulse by using the pulse measurement function of
CONSULT-II when front wheel rotating.

I

CONSULT-II cable connected to data link connector.

At front wheel rotating (D position, 20 km/h): Approx. 600 Hz

NAT315

CONSULT-II

DDL

PULSE

To data link
connector

DTC P0720 VEHICLE SPEED SENSOR CVT (SECONDARY SPEED SENSOR)

Diagnostic Procedure

AT-65

Description

NCAT0041

The engine speed signal is sent from the ECM to the TCM.

TCM TERMINALS AND REFERENCE VALUE

NCAT0041S01

Remarks: Specification data are reference values.

Terminal

No.

Wire color

Item

Condition

Judgement

standard

39

L/OR

Engine speed
signal

When engine runs at idle speed.

0.5 - 1.5V

ON BOARD DIAGNOSIS LOGIC

NCAT0041S02

Diagnostic trouble code

Malfunction is detected when ...

Check item (Possible cause)

: ENGINE SPEED SIG

TCM does not receive the proper voltage
signal from ECM.

I

Harness or connectors
(The sensor circuit is open or shorted.)

: P0725

: MI Code No. 0725

DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION
PROCEDURE

NCAT0041S03

CAUTION:

Always drive vehicle at a safe speed.
NOTE:
If “DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCE-
DURE” has been previously conducted, always turn ignition
switch “OFF” and wait at least 5 seconds before conducting
the next test.
After the repair, perform the following procedure to confirm the
malfunction is eliminated.

With CONSULT-II

1)

Turn ignition switch “ON” and select “DATA MONITOR” mode
for “ENGINE” with CONSULT-II.

2)

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

VHCL SPEED SE: 10 km/h (6 MPH) or more
THRTL POS SEN: More than 1.3V
Selector lever: D position

If the check result is “NG”, go to “Diagnostic Procedure”,
AT-68.
With GST

Follow the procedure “With CONSULT-II”.

SAT651J

SAT654J

DTC P0725 ENGINE SPEED SIGNAL

Description

AT-66

Wiring Diagram — AT — ENGSS

NCAT0202

YAT206

ECM

: Detectable line for DTC

: Non-detectable line for DTC

TCM
(TRANSMISSION
CONTROL MODULE)

DTC P0725 ENGINE SPEED SIGNAL

Wiring Diagram — AT — ENGSS

AT-67

Diagnostic Procedure

NCAT0042

1

CHECK DTC WITH ECM

Perform diagnostic test mode II (self-diagnostic results) for engine control. Check ignition signal circuit condition.

OK or NG

OK (With CONSULT-II)

©

GO TO 2.

OK (Without CONSULT-II)

©

GO TO 3.

NG

©

Check ignition signal circuit for engine control. Refer to EC section (IGNITION SIGNAL).

2

CHECK INPUT SIGNAL (With CONSULT-II)

With CONSULT-II

1. Start engine.
2. Select “ECU INPUT SIGNALS” in “DATA MONITOR” mode for “CVT” with CONSULT-II.
3. Read out the value of “ENGINE SPEED”.

Check engine speed changes according to throttle position.

OK or NG

OK

©

GO TO 4.

NG

©

Check the following items:

I

Harness for short or open between TCM and ECM

I

Resistor and ignition coil
Refer to EC section (IGNITION SIGNAL).

3

CHECK INPUT SIGNAL (Without CONSULT-II)

Without CONSULT-II

1. Start engine.
2. Check voltage between TCM terminal 39 and ground.

Voltage (Idle speed):

0.5 - 1.5V

SAT424JA

OK or NG

OK

©

GO TO 4.

NG

©

Check the following items:

I

Harness for short or open between TCM and ECM

I

Resistor and ignition coil
Refer to EC section (IGNITION SIGNAL).

4

CHECK DTC

Perform Diagnostic Trouble Code (DTC) confirmation procedure, AT-66.

OK or NG

OK

©

INSPECTION END

NG

©

1. Perform TCM input/output signal inspection.
2. If NG, recheck TCM pin terminals for damage or loose connection with harness con-

nector.

DTC P0725 ENGINE SPEED SIGNAL

Diagnostic Procedure

AT-68