Nissan Frontier D22. Manual — part 249

TROUBLE DIAGNOSIS

EC-99

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EC

CONSULT-II Function

UBS00D1L

FUNCTION

*: The following emission-related diagnostic information is cleared when the ECM memory is erased.

●

Diagnostic trouble codes

●

1st trip diagnostic trouble codes

●

Freeze frame data

●

1st trip freeze frame data

●

System readiness test (SRT) codes

●

Test values

●

Others

Diagnostic test mode

Function

Work support

This mode enables a technician to adjust some devices faster and more accurately by following the
indications on the CONSULT-II unit.

Self-diagnostic results

Self-diagnostic results such as 1st trip DTC, DTCs and 1st trip freeze frame data or freeze frame data
can be read and erased quickly. *

Data monitor

Input/Output data in the ECM can be read.

Data monitor (SPEC)

Input/Output of the specification for the basic fuel schedule, AFM, A/F, feedback control valve and the
other data monitor items can be read.

Active test

Diagnostic Test Mode in which CONSULT-II drives some actuators apart from the ECMs and also
shifts some parameters in a specified range.

DTC & SRT confirmation

The status of system monitoring tests and the self-diagnosis status/result can be confirmed.

Function test

This mode is used to inform customers when their vehicle condition requires periodic maintenance.

ECM part number

ECM part numbers can be read.

EC-100

[KA24DE]

TROUBLE DIAGNOSIS

ENGINE CONTROL COMPONENT PARTS/CONTROL SYSTEMS APPLICATION

Item

DIAGNOSTIC TEST MODE

WORK

SUP-

PORT

SELF-DIAGNOSTIC

RESULTS

DATA

MONI-

TOR

DATA

MONI-

TOR

(SPEC)

ACTIVE

TEST

DTC & SRT

CONFIRMATION

DTC*1

FREEZE

FRAME
DATA*2

SRT

STA-

TUS

DTC

WORK

SUP-

PORT

ENGINE CONTROL

COMPONENT P

ARTS

IN

P

U

T

Camshaft position sensor

X

X

X

X

Mass air flow sensor

X

X

X

Engine coolant temperature
sensor

X

X

X

X

X

Heated oxygen sensor 1

X

X

X

X

X

Heated oxygen sensor 2

X

X

X

X

X

Vehicle speed sensor

X

X

X

X

Throttle position sensor

X

X

X

X

Fuel tank temperature sensor

X

X

X

X

EVAP control system pressure
sensor

X

X

X

EGR temperature sensor

X

X

X

Intake air temperature sensor

X

X

X

X

Crankshaft position sensor
(OBD)

X

Knock sensor

X

Fuel level sensor

X

X

X

Ignition switch (start signal)

X

Closed throttle position switch

X

X

Closed throttle position switch
(throttle position sensor signal)

X

Air conditioner switch

X

Park/Neutral position (PNP)
switch

X

X

Power steering oil pressure
switch

X

Air conditioner pressure switch

X

Battery voltage

X

Ambient air temperature switch

X

X

TROUBLE DIAGNOSIS

EC-101

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EC

X: Applicable
*1: This item includes 1st trip DTCs.
*2: This mode includes 1st trip freeze frame data or freeze frame data. The items appear on CONSULT-II screen in freeze frame data
mode only if a 1st trip DTC or DTC is detected. For details, refer to

EC-52

.

INSPECTION PROCEDURE

1.

Turn ignition switch OFF.

2.

Connect “CONSULT-II” and CONSULT-II CONVERTER to data
link connector which is located behind the fuse box cover.

3.

Turn ignition switch ON.

4.

Touch “START(NISSAN BASED VHCL)”.

ENGINE

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COMPONENT P

ARTS

OUTPUT

Injectors

X

X

X

Power transistor (Ignition tim-
ing)

X

X

X

X

IACV-AAC valve

X

X

X

X

X

EVAP canister purge volume
control solenoid valve

X

X

X

X

X

Air conditioner relay

X

X

Fuel pump relay

X

X

X

X

EGRC-solenoid valve

X

X

X

X

Heated oxygen sensor 1 heater

X

X

X

X

Heated oxygen sensor 2 heater

X

X

X

X

Torque converter clutch sole-
noid valve

X

X

X

X

EVAP canister vent control
valve

X

X

X

X

X

Vacuum cut valve bypass valve

X

X

X

X

X

X

Calculated load value

X

X

X

Item

DIAGNOSTIC TEST MODE

WORK

SUP-

PORT

SELF-DIAGNOSTIC

RESULTS

DATA

MONI-

TOR

DATA

MONI-

TOR

(SPEC)

ACTIVE

TEST

DTC & SRT

CONFIRMATION

DTC*1

FREEZE

FRAME
DATA*2

SRT

STA-

TUS

DTC

WORK

SUP-

PORT

LEC104A

MBIB0233E

EC-102

[KA24DE]

TROUBLE DIAGNOSIS

5.

Touch “ENGINE”.
If “ENGINE” is not indicated, go to

GI-36, "CONSULT-II Data

Link Connector (DLC) Circuit"

.

6.

Perform each diagnostic test mode according to each service
procedure.

For further information, see the CONSULT-II Operation Manual.

WORK SUPPORT MODE
Work Item

SEF995X

SEF824Y

WORK ITEM

CONDITION

USAGE

TP SW/TP SEN IDLE POSI ADJ

●

FOLLOW THE BASIC INSPECTION IN THE SERVICE
MANUAL

When adjusting the idle throttle
position

IGNITION TIMING ADJ

●

IGNITION TIMING FEEDBACK CONTROL WILL BE
HELD BY TOUCHING “START”. AFTER DOING SO,
ADJUST IGNITION TIMING WITH A TIMING LIGHT BY
TURNING THE CRANKSHAFT POSITION SENSOR.

When adjusting initial ignition tim-
ing

FUEL PRESSURE RELEASE

●

FUEL PUMP WILL STOP BY TOUCHING “START” DUR-
ING IDLING.
CRANK A FEW TIMES AFTER ENGINE STALLS.

When releasing fuel pressure
from fuel line

SELF-LEARNING CONT

●

THE COEFFICIENT OF SELF-LEARNING CONTROL
MIXTURE RATIO RETURNS TO THE ORIGINAL COEF-
FICIENT.

When releasing the coefficient of
self-learning control value