DTC P0605: Internal Control Module Read Only Memory (ROM) Error
WARNING: This page is about a different car, the 2004 Subaru Impreza. However, it is still accessible from the selected car via links, so may be relevant.
- OUTLINE OF DIAGNOSIS
Judge NG when SUM value of ROM is out of the standard value.
- ENABLE CONDITION SECONDARY PARAMETERS AND ENABLE CONDITION CHART
Secondary Parameters Enable Conditions Ignition switch ON - GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
- DIAGNOSTIC METHOD
- Abnormality Judgment
Judge NG when the continuous time of completing the malfunction criteria below becomes more than 0.5 seconds.
Judgment Value
MALFUNCTION CRITERIA AND THRESHOLD VALUE CHARTMalfunction Criteria Threshold Value SUM value of ROM Standard value Time Needed for Diagnosis: 0.5 seconds
Malfunction Indicator Light Illumination: Illuminates as soon as malfunction occurs.
- Abnormality Judgment
- DTC CLEAR CONDITION
- When the OK idling cycle was completed 40 times in a row
- When "Clear Memory" was performed (Only at engine stop)
- MALFUNCTION INDICATOR LIGHT CLEAR CONDITION
- When the OK driving cycle was completed 3 times in a row
- When "Clear Memory" was performed
- FAIL SAFE
Stop the current to electric control throttle motor. (Fix the throttle opening angle to 6°.)
- ECM OPERATION AT DTC SETTING
- Memorize the freeze frame data. (For test mode $02)
- Memorize the diagnosis value and malfunction criteria value. (For test mode $06)