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Home >> Subaru >> 2007 >> Forester XT Limited, Standard >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Diagnostic Trouble Code (DTC) Detecting Criteria (H4DOTC) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P1602 Control Module Programming Error >> Diagnostic Method >> Judgment Value
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Judgment Value

MALFUNCTION CRITERIA THRESHOLD VALUE REFERENCE CHART

Malfunction Criteria Threshold Value
Estimated exhaust temperature < Value from Map 1

Map 1 

COOLANT TEMPERATURE THRESHOLD VALUE

Coolant temperature at engine start -40°C (-40°F) -30°C (-22°F) -20°C (-4°F) -10°C (14°F) 0°C (32°F) 10°C (50°F) 20°C (68°F) 30°C (86°F) 40°C (104°F) 50°C (122°F)
Threshold Value 200°C (392°F) 200°C (392°F) 200°C (392°F) 200°C (392°F) 200°C (392°F) 200°C (392°F) 180°C (356°F) 180°C (356°F) 180°C (356°F) 180°C (356°F)

Time Needed for Diagnosis:  14 seconds

Malfunction Indicator Light Illumination:  Illuminates when malfunction occurs in 2 continuous driving cycles.



MALFUNCTION CRITERIA THRESHOLD VALUE REFERENCE CHART

Malfunction Criteria Threshold Value
Estimated exhaust temperature ≥ Value from Map 1

Judge as NG when all the following conditions are established and judge as OK when not met.

MALFUNCTION CRITERIA THRESHOLD VALUE REFERENCE CHART

Malfunction Criteria Threshold Value
Continuous time of (target engine RPM - engine RPM > 100) ≥ 10000 milliseconds
(actual retard amount > 5°CA) ≥ 3000 milliseconds

Time Needed for Diagnosis:  6 seconds

Malfunction Indicator Light Illumination:  Illuminates when malfunction occurs in 2 continuous driving cycles.