Nissan Frontier D22. Instruction — 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
.)
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
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст