Nissan Titan A60. Instruction — part 416

EC-330

< DTC/CIRCUIT DIAGNOSIS >

[VK56DE]

P0462, P0463 FUEL LEVEL SENSOR

Refer to

GI-36, "How to Check Terminal"

and

GI-39, "Intermittent Incident"

.

>> INSPECTION END

P0500 VSS

EC-331

< DTC/CIRCUIT DIAGNOSIS >

[VK56DE]

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P0500 VSS

Description

INFOID:0000000006588317

ECM receives vehicle speed signals from two different paths via CAN communication line: One is from the

ABS actuator and electric unit (control unit) via the combination unit and the other is from TCM.

DTC Logic

INFOID:0000000006588318

DTC DETECTION LOGIC

NOTE:

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

• If DTC P0500 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. Refer to

EC-

331, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC CONFIRMATION PROCEDURE has been previously conducted, always perform the following proce-

dure before conducting 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.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is 10 V or more at idle.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1. Start engine.

2. Shift the selector lever to D range and wait at least for 2 seconds.

3. Drive the vehicle at least 5 seconds at 20 km/h (13 MPH) or more.

CAUTION:

Always drive vehicle at a safe speed.

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.

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

YES

>> Proceed to

EC-331, "Diagnosis Procedure"

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000006588319

1.

CHECK DTC WITH TCM

Check DTC with TCM. Refer to

TM-36, "CONSULT-III Function (TRANSMISSION)"

.

Is the inspection result normal?

YES

>> GO TO 2.

DTC No.

Trouble diagnosis

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P0500

VEH SPEED SEN/CIRC
(Vehicle speed sensor)

At 20 km/h (13 MPH), ECM detects the fol-
lowing status continuously for 5 seconds or
more: The difference between a vehicle
speed calculated by a output speed sensor
transmitted from TCM to ECM via CAN com-
munication and the vehicle speed indicated
on the combination meter exceeds 15km/h
(10 MPH).

• Harness or connector

(The CAN communication line is open
or shorted.)

• Combination meter
• ABS actuator and electric unit (control

unit)

• Wheel sensor
• TCM
• Output speed sensor

EC-332

< DTC/CIRCUIT DIAGNOSIS >

[VK56DE]

P0500 VSS

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-24, "CONSULT-III Function

(ABS)"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Perform trouble shooting relevant to DTC indicated.

3.

CHECK DTC WITH COMBINATION METER

Check DTC with combination meter. Refer to

MWI-28, "CONSULT-III Function (METER/M&A)"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Perform trouble shooting relevant to DTC indicated.

4.

CHECK OUTPUT SPEED SENSOR

Check output speed sensor. Refer to

TM-56, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace or replace error-detected parts.

5.

CHECK WHEEL SENSOR

Check wheel sensor. Refer to

BRC-43, "Component Inspection"

.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to

GI-39, "Intermittent Incident"

.

NO

>> Replace or replace error-detected parts.

P0506 ISC SYSTEM

EC-333

< DTC/CIRCUIT DIAGNOSIS >

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P0506 ISC SYSTEM

Description

INFOID:0000000006158768

NOTE:

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

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.).

On Board Diagnosis Logic

INFOID:0000000006158769

DTC Confirmation Procedure

INFOID:0000000006158770

NOTE:

• If DTC Confirmation Procedure has been previously conducted, always perform the following before con-

ducting the next step.

• If the target idle speed is out of the specified value, perform

EC-120, "Idle Air Volume Learning"

,

before conducting DTC Confirmation Procedure. For the target idle speed, refer to the

EC-480

.

1. Turn ignition swich OFF and wait at least 10 seconds.
2. Turn ignition swich ON.
3. Turn ignition swich OFF and wait at least 10 seconds.
TESTING CONDITION:

• Before performing the following procedure,confirm that battery voltage is more than 11V at idle.

• Always perform the test at a temperature above

−10°C(14°F).

1. Open engine hood.

2. Start engine and warm it up to normal operating temperature.

3. Turn ignition switch OFF and wait at least 10 seconds.

4. Start engine and run it for at least 1 minute at idle speed.

5. Check 1st trip DTC.

6. If 1st trip DTC is detected, go to

EC-333, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000006158771

1.

CHECK INTAKE AIR LEAK

1. Start engine and let it idle.

2. Listen for an intake air leak after the mass air flow sensor.
OK or NG

OK

>> GO TO 2.

NG

>> Discover air leak location and repair.

2.

REPLACE ECM

1. Stop engine.

2. Replace ECM.

3. Perform initialization of NVIS(NATS) system and registration of all NVIS(NATS) ignition key IDs. Refer to

SEC-7, "ECM RE-COMMUNICATING FUNCTION : Special Repair Requirement"

.

4. Perform

EC-119, "VIN Registration"

.

5. Perform

EC-119, "Accelerator Pedal Released Position Learning"

.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0506
0506

Idle speed control system
RPM lower than expected

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

• Electric throttle control actuator
• Intake air leak