P0108 (U5/Low Emissions)

DTC P0108 - MANIFOLD ABSOLUTE PRESSURE/BAROMETRIC PRESSURE CIRCUIT HIGH INPUT

OUTLINE OF DIAGNOSIS
Detect the open or short circuit of intake manifold pressure sensor. Judge NG when out of the standard value.




COMPONENT DESCRIPTION




ENABLE CONDITION

GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.

DIAGNOSTIC METHOD




Judge NG when the continuous time of completing the malfunction criteria becomes more than 0.5 seconds. Judge OK and clear the NG when the malfunction criteria are not completed.

DTC CLEAR CONDITION
- When the OK idling cycle was completed 40 times in a row
- When "Clear Memory" was performed

MALFUNCTION INDICATOR LIGHT CLEAR CONDITION
- When the OK driving cycle was completed 3 times in a row
- When "Clear Memory" was performed

FAIL SAFE
- Intake manifold pressure sensor process: Estimate the pressure from engine load.
- ISC feedback: Not allowed to calculate the amount of feedback.
- Heavy fuel judgment: Not allowed to carry out the heavy judgment.
- Fuel cut control: Perform fuel cut when intake manifold sensor is NG. (When amount of fuel injection is large)

ECM OPERATING AT DTC SETTING
Memorize the freeze frame data. (For test mode $02)