GD(H6DO)-107
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
720° Interval Difference Method
FTP 1.5 times misfire (Misfire occurrence level which influences exhaust gas)
Time Needed for Diagnosis: 1000 engine revs.
Malfunction Indicator Light Illumination: Illuminates when malfunctions occur in 2 continuous driving cy-
cles.
Catalyst damage misfire (Misfire occurrence level damaging catalyst)
Diagnostic value domg 720 = (omg 1 – omg 0) – (omg 7 – omg 6)
Misfire judgment domg 720 > Judgment value → Judge as misfire
Judgment Value (Judge that malfunction occurs when the misfire ratio is high in 1000 engine revs.)
Malfunction Criteria Threshold Value
FTP emission judgment value > 1.0 % in 1000 revs.
Judgment Value
Malfunction Criteria Threshold Value
Catalyst damage misfire judgment value Refer to Map.
EN-02280
TO JUDGE A MISFIRE
THRESHOLD VALUE
domg720
domg720
GD(H6DO)-109
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
BO:DTC P0302 CYLINDER 2 MISFIRE DETECTED
1. OUTLINE OF DIAGNOSIS
NOTE:
For the diagnostic procedure, refer to DTC P0301.
FIRE DETECTED, Diagnostic Trouble Code (DTC) Detecting Criteria.>
BP:DTC P0303 CYLINDER 3 MISFIRE DETECTED
1. OUTLINE OF DIAGNOSIS
NOTE:
For the diagnostic procedure, refer to DTC P0301.
FIRE DETECTED, Diagnostic Trouble Code (DTC) Detecting Criteria.>
BQ:DTC P0304 CYLINDER 4 MISFIRE DETECTED
1. OUTLINE OF DIAGNOSIS
NOTE:
For the diagnostic procedure, refer to DTC P0301.
FIRE DETECTED, Diagnostic Trouble Code (DTC) Detecting Criteria.>
BR:DTC P0305 CYLINDER 5 MISFIRE DETECTED
1. OUTLINE OF DIAGNOSIS
NOTE:
For the diagnostic procedure, refer to DTC P0301.
FIRE DETECTED, Diagnostic Trouble Code (DTC) Detecting Criteria.>
BS:DTC P0306 CYLINDER 6 MISFIRE DETECTED
1. OUTLINE OF DIAGNOSIS
NOTE:
For the diagnostic procedure, refer to DTC P0301.
FIRE DETECTED, Diagnostic Trouble Code (DTC) Detecting Criteria.>
GD(H6DO)-122
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
3. ENABLE CONDITIONS
Map 2
Add the following value every 512 milliseconds.
4. GENERAL DRIVING CYCLE
Perform the diagnosis only once at a constant 70 km/h (43 MPH) or higher.
5. DIAGNOSTIC METHOD
After the execution criteria are established, calculate the output fluctuation value of front oxygen (A/F) sensor
(averaged for the right and left) and output fluctuation value of rear oxygen sensor. Calculate the diagnosis
value when the front oxygen (A/F) sensor output fluctuation value is more than specified value. A/F response
properties and diagnosis values are parameters for the judgment value.
Judge as NG when the malfunction criteria below are met. Judge as OK if the criteria below are not met.
Time Needed for Diagnosis: 30 to 55 seconds
Malfunction Indicator Light Illumination: Illuminates when malfunctions occur in 2 continuous driving cy-
cles.
Secondary Parameters Enable Conditions
Battery voltage > 10.9 V
Atmospheric pressure > 75.1 kPa (563
mmHg, 22.2 inHg)
Engine coolant temperature≥ 75°C (167°F)
Catalyst warm-up counter (Map 2)≥ 8000
Misfire detection every 200 rotations < 5 times
Sub feedback In operation
Evaporative system diagnosis Not in operation
Time of difference (< 0.10) between
actual and target lambda
1000 milliseconds or
more
Ve h i c l e s p e e d≥ 70 km/h (43 MPH)
Amount of intake air 15 ←→ 50 g (0.53
←→ 1.76 oz)/s
Rear O2 output change from lower than
to higher than 600 mV
Experienced after fuel
cut
Load change absolute value < 0.02 g (0.007 oz)/rev
To t a l t i m e o f c a n i s t e r p u r g e o p e r a t i o n≥ 5 sec.
Learning value of evaporation gas den-
sity
≤ 0.12
After engine starting≥ 205 sec.
Amount of intake
air (g(oz)/s)0 (0)3.2
(0.113)
6.4
(0.226)
9.6
(0.339)
12.8
(0.451)
16
(0.564)
19.2
(0.677)
22.4
(0.790)
25.6
(0.903)
28.8
(1.016)
32
(1.129)
35.2
(1.242)
To t a l v a l u e f o r
warm-up counter–19 –8 11 19 30 44 61 81 104 130 159 161
Judgment Value
Malfunction Criteria Threshold Value
Accumulated variation of output voltage
of rear oxygen sensor per 32 millisec-
onds × 4 divided by accumulated varia-
tion of lambda of front oxygen (A/F)
sensor per 32 milliseconds × 4
≥ 30
