Nissan Frontier D22. Manual - part 338

 

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Nissan Frontier D22. Manual - part 338

 

 

DTC P1400 EGRC-SOLENOID VALVE

EC-455

[KA24DE]

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EC

2. 

CHECK POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Disconnect EGRC solenoid valve harness connector.

3.

Turn ignition switch ON.

4.

Check voltage between terminal 2 and ground with CONSULT-II
or tester.

OK or NG

OK

>> GO TO 4.

NG

>> GO TO 3.

3. 

DETECT MALFUNCTIONING PART

Check the following.

●

Harness connectors E43, M65

●

Harness connectors M59, F27

●

Fuse block (J/B) connector E49

●

10A fuse

●

Harness for open or short between EGRC solenoid valve and fuse

>> Repair harness or connectors.

4. 

CHECK OUTPUT SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check harness continuity between ECM terminal 103 and terminal 1.
Refer to Wiring Diagram.

4.

Also check harness for short to ground and short to power.

OK or NG

OK (With CONSULT-II)>>GO TO 6.
OK (Without CONSULT-II)>>GO TO 7.
NG

>> GO TO 5

5. 

DETECT MALFUNCTIONING PART

Check the harness for open or short between EGRC solenoid valve and ECM.

>> Repair open circuit or short to ground or short to power in harness or connectors.

SEF336V

Voltage

: Battery voltage

SEF192V

Continuity should exist.

EC-456

[KA24DE]

DTC P1400 EGRC-SOLENOID VALVE

6. 

CHECK EGRC-SOLENOID VALVE

1.

Perform “EGRC SOLENOID VALVE” in “ACTIVE TEST” mode.

2.

Check air passage continuity and operation delay time under the
following conditions.

OK or NG

OK

>> GO TO 8.

NG

>> Replace EGRC-solenoid valve.

7. 

CHECK EGRC-SOLENOID VALVE

1.

Check air passage continuity and operation delay time under the
following conditions.

OK or NG

OK

>> GO TO 8.

NG

>> Replace EGRC-solenoid valve.

8. 

CHECK INTERMITTENT INCIDENT

Perform 

EC-120, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

 .

>> INSPECTION END.

Conditions

Air passage continuity 

between A and B

Air passage continuity 

between A and C

ON

Yes

No

OFF

No

Yes

SEF129Y

Conditions

Air passage continuity 

between A and B

Air passage continuity 

between A and C

12V direct current supply 
between terminals 1 and 
2

Yes

No

No supply

No

Yes

AEC919

DTC P1402 EGR FUNCTION

EC-457

[KA24DE]

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EC

DTC P1402 EGR FUNCTION

PFP:14710

Description

UBS00DB2

SYSTEM DESCRIPTION

This system cuts and controls vacuum applied to the EGR valve to suit engine operating conditions. This cut-
and-control operation is accomplished through the ECM and the EGRC solenoid valve. When the ECM
detects any of the following conditions, current through the solenoid valve is cut. This causes the vacuum to
be cut. The EGR valve remains closed.

●

Engine stopped

●

Low engine coolant temperature

●

Engine starting

●

High-speed engine operation

●

Engine idling

●

Excessively high engine coolant temperature

●

Wide open throttle

●

Mass air flow sensor malfunction

COMPONENT DESCRIPTION
Exhaust Gas Recirculation (EGR) Valve

The EGR valve controls the amount of exhaust gas routed to the
intake manifold. Vacuum is applied to the EGR valve in response to
throttle valve opening. The vacuum controls the movement of a taper
valve connected to the vacuum diaphragm in the EGR valve.

Sensor

Input Signal to ECM

ECM Function

Actuator

Camshaft position sensor

Engine speed

EGR control

EGRC solenoid valve

Mass air flow sensor

Amount of intake air

Engine coolant temperature sensor

Engine coolant temperature

Ignition switch

Start signal

Throttle position sensor

Throttle position

Park/neutral position (PNP) switch

Gear position 

SEF641Q

SEF783K

EC-458

[KA24DE]

DTC P1402 EGR FUNCTION

EGR temperature sensor

The EGR temperature sensor detects temperature changes in the
EGR passageway. When the EGR valve opens, hot exhaust gases
flow, and the temperature in the passageway changes. The EGR
temperature sensor is a thermistor that modifies a voltage signal
sent from the ECM. This modified signal then returns to the ECM as
an input signal. As the temperature increases, EGR temperature
sensor resistance decreases. This sensor is not used to control the
engine system.
It is used only for the on board diagnosis.

<Reference data>

*: These data are reference values and are measured between ECM terminal 63
(EGR temperature sensor) and ground.
When EGR system is operating.
Voltage: 0 - 1.5V

EGRC Solenoid Valve

The EGRC solenoid valve responds to signals from the ECM. When
the ECM sends an OFF signal, the vacuum signal passes through
the solenoid valve. The signal then reaches the EGR valve.
When the ECM sends an ON signal, a plunger will then move to cut
the vacuum signal from the intake manifold collector to the EGR
valve.

CONSULT-II Reference Value in Data Monitor Mode

UBS00EM0

Specification data are reference values.

SEF599K

EGR temperature

°C (°F)

Voltage*

 V

Resistance

M

Ω

0 (32)

4.56

0.62 - 1.05

50 (122)

2.25

0.065 - 0.094

100 (212)

0.59

0.011 - 0.015

SEF068XB

SEF240PD

MONITOR ITEM

CONDITION

SPECIFICATION

EGR TEMP SEN

●

Engine: After warming up

Less than 4.5V

 

 

 

 

 

 

 

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