Nissan Frontier D22. Manual - part 340

DTC P1402 EGR FUNCTION

EC-463

[KA24DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

4. 

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 fuse block and EGRC solenoid valve

●

Harness for open or short between ECM and EGRC solenoid valve

OK or NG

OK

>> GO TO 5.

NG

>> Repair open circuit or short to power in harness or connector.

5. 

CHECK EGRC-SOLENOID VALVE

 With CONSULT-II

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 7.

NG

>> Replace EGRC-solenoid valve.

6. 

CHECK EGRC-SOLENOID VALVE

 Without CONSULT-II

1.

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

OK or NG

OK

>> GO TO 7.

NG

>> Replace EGRC-solenoid valve.

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

EC-464

[KA24DE]

DTC P1402 EGR FUNCTION

7. 

CHECK EGR VALVE

●

Apply vacuum to EGR vacuum port with a hand vacuum pump.
EGR valve spring should lift.

●

Check for sticking.

OK or NG

OK

>> GO TO 8.

NG

>> Replace EGR valve.

8. 

CHECK EGRC-BPT VALVE

1.

Plug one of two ports of EGRC-BPT valve.

2.

Vacuum from the other port and check for leakage while apply-
ing a pressure above 0.981 kPa (100 mmH

2

 O, 3.94 inH

2

 O)

from under EGRC-BPT valve.

3.

If a leakage is noted, replace the valve.

OK or NG

OK

>> GO TO 9.

NG

>> Replace EGRC-BPT valve.

MEF137D

SEF083P

DTC P1402 EGR FUNCTION

EC-465

[KA24DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

9. 

CHECK EGR TEMPERATURE SENSOR

Check resistance change and resistance value.

<Reference data>

OK or NG

OK

>> GO TO 10.

NG

>> Replace EGR temperature sensor.

10. 

CHECK INTERMITTENT INCIDENT

Perform 

EC-120, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

 .

>> INSPECTION END.

SEF643Q

EGR temperature C (F)

Voltage [V]

Resistance M

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

EC-466

[KA24DE]

DTC P1442 EVAP CONTROL SYSTEM

DTC P1442 EVAP CONTROL SYSTEM

PFP:14950

On Board Diagnosis Logic

UBS00DB7

NOTE:
If DTC P0442 is displayed with DTC P1448, perform trouble diagnosis for DTC P1448 first. (See 

EC-481

.)
This diagnosis detects leaks in the EVAP purge line using of vapor pressure in the fuel tank.
The EVAP canister vent control valve is closed to shut the EVAP purge line. The vacuum cut valve bypass
valve will then be opened to clear the line between the fuel tank and the EVAP canister purge volume control
solenoid valve. The EVAP control system pressure sensor can now monitor the pressure inside the fuel tank.
If pressure increases, the ECM will check for leaks in the line between the vacuum cut valve and EVAP canis-
ter purge volume control solenoid valve.

PBIB1402E