2.5L SOHC
DTC P0103 MASS OR VOLUME AIR FLOW CIRCUIT HIGH INPUT1. OUTLINE OF DIAGNOSIS
Detect the open or short circuit of air flow sensor. Judge NG when out of the standard value.
2. COMPONENT DESCRIPTION
3. ENABLE CONDITION
4. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
5. DIAGNOSTIC METHOD
Judge NG when the continuous time until completing the malfunction criteria becomes more than 0.5 seconds. Judge OK and clear the NG when the malfunction criteria are not completed.
6. DTC CLEAR CONDITION
- When the OK idling cycle was completed 40 times in a row
- When "Clear Memory" was performed
7. MALFUNCTION INDICATOR LIGHT CLEAR CONDITION
- When the OK driving cycle was completed 3 times in a row
- When "Clear Memory" was performed
8. FAIL SAFE
- Air flow meter: Engine load is normally calculated by manifold pressure and engine speed; however, calculated only by manifold pressure.
- EVAP conc. learning (fuel): Not allowed to learn.
- Knock compensation:
- At normal: learned ignition timing value = knock F/B timing value + whole learning timing value + partial learning timing value
- At trouble: learned ignition timing value = -3 degree CA (retard 3 degree CA)
- Knock F/B timing value = 0 degree CA
- Whole learning is not allowed.
- Partial learning is not allowed.
- ISC control: Make the open loop compensation to be the given value (1 g (0.04 oz)/s). Stop calculating the throttle sensor temperature compensation. (Hold the previous value.)
9. ECM OPERATION AT DTC SETTING
Memorize the freeze frame data. (For test mode $02)