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Diagnostic Trouble Code (DTC) Detecting Criteria
4. DIAGNOSTIC METHOD
• Exhaust gas temperature diagnosis
Abnormality Judgment
Calculate the estimated exhaust gas temperature when the diagnostic enable condition is established. Judge
as NG when the following conditions are established in 14 seconds after starting the engine.
Judgment Value
Malfunction Criteria
Estimated exhaust gas temperature
Map 1
Engine coolant temper-
–40°C
ature at engine start
(–40°F)
Threshold Value
200°C
(392°F)
Time Needed for Diagnosis: 14 seconds
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in two continuous driving
cycles.
Normality Judgment
Judge as OK when the following conditions are established after the specified amount of time has passed.
Judgment Value
Malfunction Criteria
Estimated exhaust gas temperature
• Idle speed diagnosis
Judge as NG when all of the following conditions are established, and judge as OK when the following con-
ditions are not met.
Malfunction Criteria
Continuous time of (Target engine speed
– Actual engine speed > 100)
Continuous time of (actual retard amount
> 30°CA)
Time Needed for Diagnosis: 14 seconds
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in two continuous driving
cycles.
5. DTC CLEAR CONDITION
• When the OK idling cycle is completed 40 times in a row
• When "Clear Memory" is performed
6. MALFUNCTION INDICATOR LIGHT CLEAR CONDITIONS
• When the OK driving cycle is completed three times in a row
• When "Clear Memory" is performed
7. FAIL SAFE
None
8. ECM OPERATION AT DTC SETTING
Memorize the freeze frame data. (For test mode $02)
Threshold Value
< Value from Map 1
–30°C
–20°C
–10°C
0°C
(–22°F)
(–4°F)
(14°F)
(32°F)
200°C
200°C
200°C
75°C
(392°F)
(392°F)
(392°F)
(167°F)
Threshold Value
≥ Value from Map 1
Threshold Value
≥ 6000 milliseconds
≥ 0 milliseconds
GD(STI)-213
GENERAL DESCRIPTION
10°C
20°C
30°C
40°C
(50°F)
(68°F)
(86°F)
(104°F)
73°C
71°C
67°C
64°C
(163°F)
(160°F)
(153°F)
(147°F)
45°C
(113°F)
63°C
(145°F)
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