Nissan Tiida C11. Manual - part 451

EC-454

< FUNCTION DIAGNOSIS >

[HR16DE (WITHOUT EURO-OBD)]

INTAKE VALVE TIMING CONTROL

1.

Exhaust manifold

2.

Heated oxygen sensor 1

3.

Heated oxygen sensor 2

4.

Heated oxygen sensor 2 harness 
connector

Vehicle front

PBIB2942E

PBIB2943E

INTAKE VALVE TIMING CONTROL

EC-455

< FUNCTION DIAGNOSIS >

[HR16DE (WITHOUT EURO-OBD)]

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1.

Cooling fan motor harness connec-
tor

2.

Crankshaft position sensor

3.

Stop lamp switch

4.

Brake pedal

5.

Accelerator pedal position sensor 
harness connector

6.

Accelerator pedal position sensor

7.

Accelerator pedal

8.

Fuel level sensor unit and fuel pump 
harness connector (view with in-
spection hole cover removed)

9.

Fuel pressure regulator

10. Fuel pump

AWBIA0044ZZ

EC-456

< FUNCTION DIAGNOSIS >

[HR16DE (WITHOUT EURO-OBD)]

INTAKE VALVE TIMING CONTROL

Component Description

INFOID:0000000001693491

1.

ASCD steering switch

2.

MAIN switch

3.

CANCEL switch

4.

SET/COAST switch

5.

RESUME/ACCELERATE switch

6.

ASCD brake switch

7.

Stop lamp switch

8.

ASCD clutch switch

9.

Clutch pedal

ALBIA0273ZZ

Component

Reference

Camshaft position sensor (PHASE)

EC-520, "Description"

Crankshaft position sensor (POS)

EC-516, "Description"

Engine coolant temperature sensor

EC-492, "Description"

Intake valve timing control solenoid valve

EC-528, "Description"

Vehicle speed sensor

EC-634, "Description"

DIAGNOSIS SYSTEM (ECM)

EC-457

< FUNCTION DIAGNOSIS >

[HR16DE (WITHOUT EURO-OBD)]

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DIAGNOSIS SYSTEM (ECM)

Diagnosis Description

INFOID:0000000001693492

INTRODUCTION

The ECM has an on board diagnostic system, which detects malfunctions related to engine sensors or actua-
tors. The ECM also records various emission-related diagnostic information including:

The above information can be checked using procedures listed in the table below.

×

: Applicable

—: Not applicable

*: When DTC and 1st trip DTC simultaneously appear on the display, they cannot be clearly distinguished from each other.

The malfunction indicator lamp (MI) on the instrument panel lights up when the same malfunction is detected
in two consecutive trips (Two trip detection logic), or when the ECM enters fail-safe mode. (Refer to 

EC-665,

"Fail Safe"

.)

TWO TRIP DETECTION LOGIC

When a malfunction is detected for the first time, 1st trip DTC and 1st trip Freeze Frame data are stored in the
ECM memory. The MI will not light up at this stage. <1st trip>
If the same malfunction is detected again during the next drive, the DTC and Freeze Frame data are stored in
the ECM memory, and the MI lights up. The MI lights up at the same time when the DTC is stored. <2nd trip>
The “trip” in the “Two Trip Detection Logic” means a driving mode in which self-diagnosis is performed during
vehicle operation.

DTC AND FREEZE FRAME DATA

DTC and 1st Trip DTC

The 1st trip DTC (whose number is the same as the DTC number) is displayed for the latest self-diagnostic
result obtained. If the ECM memory was cleared previously, and the 1st trip DTC did not reoccur, the 1st trip
DTC will not be displayed.
If a malfunction is detected during the 1st trip, the 1st trip DTC is stored in the ECM memory. The MI will not
light up (two trip detection logic). If the same malfunction is not detected in the 2nd trip (meeting the required
driving pattern), the 1st trip DTC is cleared from the ECM memory. If the same malfunction is detected in the
2nd trip, both the 1st trip DTC and DTC are stored in the ECM memory and the MI lights up. In other words,
the DTC is stored in the ECM memory and the MI lights up when the same malfunction occurs in two consec-
utive trips. If a 1st trip DTC is stored and a non-diagnostic operation is performed between the 1st and 2nd
trips, only the 1st trip DTC will continue to be stored. For malfunctions that light up the MI during the 1st trip,
the DTC and 1st trip DTC are stored in the ECM memory.
Procedures for clearing the DTC and the 1st trip DTC from the ECM memory are described in “HOW TO
ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION”.
When a 1st trip DTC is detected, check, print out or write down and erase (1st trip) DTC and Freeze Frame
data as specified in Work Flow procedure Step 2, refer to 

EC-381, "Work Flow"

. Then perform DTC CONFIR-

MATION PROCEDURE or Component Function Check to try to duplicate the malfunction. If the malfunction is
duplicated, the item requires repair.

Freeze Frame Data and 1st Trip Freeze Frame Data

The ECM records the driving conditions such as fuel system status, calculated load value, engine coolant tem-
perature, short term fuel trim, long term fuel trim, engine speed, vehicle speed, absolute throttle position, base
fuel schedule and intake air temperature at the moment a malfunction is detected.

Emission-related diagnostic information

Diagnostic Trouble Code (DTC)

Freeze Frame data

1st Trip Diagnostic Trouble Code (1st Trip DTC)

1st Trip Freeze Frame data

DTC

1st trip DTC

Freeze Frame data

1st trip Freeze Frame 

data

CONSULT-III

×

×

×

×

ECM

×

×

*

—

—