Nissan Frontier D22. Manual - part 339
DTC P1402 EGR FUNCTION
EC-459
[KA24DE]
C
D
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F
G
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A
EC
On Board Diagnosis Logic
UBS00DB3
If EGR temperature sensor detects EGR flow under the condition that does not call for EGR, a high-flow mal-
function is diagnosed.
DTC Confirmation Procedure
UBS00DB4
NOTE:
●
If “DTC Confirmation Procedure” has been previously conducted, always turn ignition switch OFF and wait
at least 5 seconds before conducting the next test.
●
Diagnosis for this DTC will occur when engine coolant temperature is approx. 50 to 60
°C (122 to 140°F).
Therefore, it will be better to turn ignition switch ON (Start engine) at the engine coolant temperature
below 30
°C (86°F) when starting DTC confirmation procedure.
TESTING CONDITION:
●
Always perform the test 9 temperature above –10
°C (14°F).
●
Engine coolant temperature and EGR temperature must be
verified in “DATA MONITOR” mode with CONSULT-II before
starting DTC WORK SUPPORT test. If it is out of range
below, the test cannot be conducted.
COOLAN TEMP/S:
−10 to 60°C (14 to 140°F)*
EGR TEMP SEN: Less than 3.7V
If the values are out of the ranges indicated above, park the
vehicle in a cool place and allow the engine temperature to
stabilize. Do not attempt to reduce the engine coolant or
EGR temperature with a fan or means other than ambient
air. Doing so may produce an inaccurate diagnostic result.
*: Although CONSULT-II screen displays “
−10 to 40°C (14 to 104°F)”
as a range of engine coolant temperature, ignore it.
WITH CONSULT-II
1.
Turn ignition switch OFF and wait at least 10 seconds, then turn ignition switch ON.
2.
Select “EGR SYSTEM P1402” of “EGR SYSTEM” in “DTC WORK SUPPORT” mode with CONSULT-II.
3.
Touch “START”. Follow instruction of CONSULT-II.
4.
Start engine and let it idle until “TESTING” on CONSULT-II screen is turned to “COMPLETED”. (It will take
80 seconds or more.)
EGRC SOL/V
●
Engine: After warming up
●
Air conditioner switch: OFF
●
Shift lever: P or N
●
No-load
Idle
OFF
Engine speed: Revving engine from
idle to 3,000 rpm quickly.
ON
MONITOR ITEM
CONDITION
SPECIFICATION
DTC No.
Trouble Diagnosis Name
DTC Detecting Condition
Possible Cause
P1402
EGR control system stuck open
EGR flow is detected under conditions that
do not call for EGR.
●
EGRC solenoid valve
●
EGR valve leaking or stuck open
●
EGR temperature sensor
●
EGRC-BPT valve
SEF202Y
PBIB1600E