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Self-diagnosis result Example
Diagnosis
Ignition
OFF – ON –
OFF
Ignition
OFF – ON –
OFF
Ignition
OFF – ON –
OFF
Ignition
OFF – ON –
OFF
All OK
Case 1
P0400 OK (1) – (1) OK (2) – (2)
P0402 OK (1) – (1) – (1) OK (2)
P1402 OK (1) OK (2) – (2) – (2)
SRT of EGR “CMPLT”“CMPLT”“CMPLT”“CMPLT”
Case 2
P0400 OK (1) – (1) – (1) – (1)
P0402 – (0) – (0) OK (1) – (1)
P1402 OK (1) OK (2) – (2) – (2)
SRT of EGR “INCMP”“INCMP”“CMPLT”“CMPLT”
NG exists
Case 3
P0400 OK OK ––
P0402 ––––
P1402
NG – NG NG (Consecutive
NG)
(1st trip) DTC
1st trip DTC – 1st trip DTC DTC (=MIL
“ON”)
SRT of EGR “INCMP”“INCMP”“INCMP”“CMPLT”
OK: Self-diagnosis is carried out and the result is OK.
NG: Self-diagnosis is carried out and the result is OK.
–: Self-diagnosis is not carried out.
When all SRT related self-diagnoses showed OK results in a same cycle (Ignition OFF – ON – OFF), the SRT
will indicate “CMPLT”.
, Case 1 above
When all SRT related self-diagnoses show OK results through several different cycles, the SRT will indicate
“CMPLT” at the time the respective self-diagnoses have at least one OK result.
, Case 2 above
If one or more SRT related self-diagnoses showed NG results in 2 consecutive cycles, the SRT will also indi-
cate “CMPLT”.
, Case 3 above
The previous table shows that the minimum number of cycles for setting SRT as “INCMP” is one (1) for each
self-diagnosis (Case 1 and 2) or two (2) for one self-diagnosis (Case 3). However, in preparation for the State
emissions inspection, it is unnecessary of each self-diagnosis to be executed twice (Case 3) because of the
following reasons;
쐌 The SRT will indicate “CMPLT” at the time the respective self-diagnoses have one (1) OK result.
쐌 The emissions inspection requires “CMPLT” of the SRT only with OK self-diagnosis result.
쐌 When, during SRT driving pattern, 1st trip DTC (NG) is detected prior to “CMPLT” of SRT, the self-diag-
nosis memory must be erased from ECM after repair.
쐌 If the 1st trip DTC is erased, all the SRT will indicate “INCMP”.
NOTE:
SRT can be set as “CMPLT” together with the DTC(s). Therefore, DTC check must always be carried out prior
to the State emission inspection even though the SRT indicates “CMPLT”.
SRT Service Procedure
NGEC0552S0302
If a vehicle has been rejected for the State emissions inspection due to one or more SRT items indicating
“INCMP”, review the following flowchart diagnostic sequence on the next page.
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
VG33E
Emission-related Diagnostic Information (Cont’d)
EC-657
FE
CL
MT
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
GI
MA
EM
LC
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