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Nissan Qashqai J11. Manual - part 326

P0500 VSS

ECM-281

< DTC/CIRCUIT DIAGNOSIS >

[MR20DD]

ECM

YES

>> INSPECTION END

>> Repair or replace malfunctioning part.

M/T MODELS

M/T MODELS : DTC Description

INFOID:0000000010827929

The vehicle speed signal is sent to the combination meter from the “ABS actuator and electric unit (control
unit)” via the CAN communication line. The combination meter then sends a signal to the ECM via the CAN
communication line.

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Harness or connectors

(CAN communication line is open or shorted)

• Harness or connectors

(Vehicle speed signal circuit is open or shorted)

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

FAIL-SAFE

DTC CONFIRMATION PROCEDURE

CHECK DTC PRIORITY

If DTC P0500 is displayed with DTC UXXXX or P0607, first perform the trouble diagnosis for DTC UXXXX or
P0607.

Is applicable DTC detected?

YES

>> Perform diagnosis of applicable. Refer to

ECM-93, "DTC Index"

>> GO TO 2.

INSPECTION START

Do you have CONSULT?

YES

>> GO TO 3.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

P0500

VEHICLE SPEED SEN A
(Vehicle speed sensor “A”)

The vehicle speed signal sent to ECM is almost 0 km/h (0 MPH) even when vehicle is
being driven.

Engine operating condition in fail-safe mode

Fail safe mode

Vehicle behavior

Traveling con-
trol mode

Accelerator an-
gle variation
control

ECM controls the accelerator pedal depression speed to make it slower than actual speed. This
causes a drop in accelerating performance and encourages the driver to repair malfunction.
NOTE:
ECM does not control the accelerator pedal releasing speed.

Combustion
control mode

Stratified charge
combustion
control at start-
ing

No stratified charge combustion at starting (cold start).

Idle speed con-
trol

Stops feedback control of idle speed and controls with specified speed.

Recovery speed
control at decel-
erating

Stops recovery speed control by the fuel cut at decelerating and controls with specified speed.

Idle neutral con-
trol

Stops idle neutral control.

ECM-282

< DTC/CIRCUIT DIAGNOSIS >

[MR20DD]

P0500 VSS

>> GO TO 6.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
before conducting the next test.
1.

Turn ignition switch OFF and wait at least 10 seconds.

Turn ignition switch ON.

Turn ignition switch OFF and wait at least 10 seconds.

>> GO TO 4.

CHECK VEHICLE SPEED SIGNAL

NOTE:
This procedure 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.

With CONSULT

Start engine.

Read “VHCL SPEED SE” in “DATA MONITOR” mode of “ENGINE” using CONSULT. The vehicle speed
on CONSULT should exceed 10 km/h (6 mph) when rotating wheels with suitable gear position.

Is the inspection result normal?

YES

>> GO TO 5.

>> Proceed to

ECM-282, "M/T MODELS : Diagnosis Procedure"

PERFORM DTC CONFIRMATION PROCEDURE

Select “DATA MONITOR” mode of “ENGINE” using CONSULT.

Warm engine up to normal operating temperature.

Maintain the following conditions for at least 50 consecutive seconds.

CAUTION:

Always drive vehicle at a safe speed.

Check 1st trip DTC.

Is 1st trip DTC detected?

YES

>> Proceed to

ECM-282, "M/T MODELS : Diagnosis Procedure"

NO-1

>> To check malfunction symptom before repair: Refer to

GI-41, "Intermittent Incident"

NO-2

>> Confirmation after repair: INSPECTION END

PERFORM COMPONENT FUNCTION CHECK

With GST

Lift up drive wheels.

Start engine.

Read vehicle speed signal in Service $01 with GST.
The vehicle speed signal on GST should be able to exceed 10 km/h (6 MPH) when rotating wheels with
suitable gear position.

Is the inspection result normal?

YES-1 >> To check malfunction symptom before repair: Refer to

GI-41, "Intermittent Incident"

YES-2 >> Confirmation after repair: INSPECTION END
NO

>> Proceed to

ECM-282, "M/T MODELS : Diagnosis Procedure"

M/T MODELS : Diagnosis Procedure

INFOID:0000000010827931

CHECK DTC PRIORITY

ENG SPEED

1,800 - 6,000 rpm

COOLAN TEMP/S

More than 70

C (158

B/FUEL SCHDL

5.0 - 255 msec

Selector lever

Except Neutral position

PW/ST SIGNAL

OFF

P0500 VSS

ECM-283

< DTC/CIRCUIT DIAGNOSIS >

[MR20DD]

ECM

If DTC P0500 is displayed with DTC UXXXX or P0607, first perform the trouble diagnosis for DTC UXXXX or
P0607.
Is applicable DTC detected?

YES

>> Perform diagnosis of applicable. Refer to

ECM-93, "DTC Index"

>> GO TO 2.

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

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

BRC-42, "CONSULT Function"

Is the inspection result normal?

YES

>> GO TO 3.

>> Perform trouble shooting relevant to DTC indicated. Refer to

BRC-53, "DTC Index"

CHECK DTC WITH COMBINATION METER

Check DTC with combination meter. Refer to

MWI-29, "CONSULT Function (METER/M&A)"

Is the inspection result normal?

YES

>> INSPECTION END

>> Perform trouble shooting relevant to DTC indicated. Refer to

MWI-39, "DTC Index"

ECM-284

< DTC/CIRCUIT DIAGNOSIS >

[MR20DD]

P0506 ISC SYSTEM

P0506 ISC SYSTEM

DTC Description

INFOID:0000000010702974

The ECM controls the engine idle speed to a specified level through the fine adjustment of the air, which is let
into the intake manifold, by operating the electric throttle control actuator. The operating of the throttle valve is
varied to allow for optimum control of the engine idling speed. The crankshaft position sensor (POS) detects
the actual engine speed and sends a signal to the ECM.
The ECM controls the electric throttle control actuator so that the engine speed coincides with the target value
memorized in the ECM. The target engine speed is the lowest speed at which the engine can operate steadily.
The optimum value stored in the ECM is determined by taking into consideration various engine conditions,
such as during warming up, deceleration and engine load (air conditioner, power steering and cooling fan
operation, etc.).

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Electric throttle control actuator
• Intake air leaks

FAIL-SAFE

Not applicable

DTC CONFIRMATION PROCEDURE

CHECK DTC PRIORITY

If DTC P0506 is displayed with other DTC, first perform the trouble diagnosis for other DTC.

Is applicable DTC detected?

YES

>> Perform diagnosis of applicable. Refer to

ECM-93, "DTC Index"

>> GO TO 2.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
before conducting the next test. When the target idle speed is not the specified value, perform

ECM-412,

"Inspection"

before conducting DTC Confirmation Procedure.

TESTING CONDITION:
• Before performing the following procedure, confirm that battery voltage is 11 V or more at idle.
• Always perform at a temperature above

−

C (14

F).

NOTE:
In the highlands of over 2,400m altitude, DTC may be detected without abnormality, but that case is not abnor-
mal if the DTC is not detected when "DTC confirmation procedure" is performed at under 2,400m altitude.

>> GO TO 3.

PERFORM DTC CONFIRMATION PROCEDURE

Start engine and warm it up to normal operating temperature.

Turn ignition switch OFF and wait at least 10 seconds.

Start engine and let it idle for at least 1 minutes.

Check 1st trip DTC.

Is 1st trip DTC detected?

YES

>> Proceed to

ECM-285, "Diagnosis Procedure"

NO-1

>> To check malfunction symptom before repair: Refer to

GI-41, "Intermittent Incident"

NO-2

>> Confirmation after repair: INSPECTION END

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

P0506

ISC SYSTEM

The idle speed is less than the target idle speed by 100 rpm or more.

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