SAAB WIS ONLINE

DTC P0108 MANIFOLD ABSOLUTE PRESSURE/BAROMETRIC PRESSURE CIRCUIT HIGH INPUT

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


(1)

Connector

(A)

Output voltage

(2)

Terminal

(B)

Absolute pressure

(3)

O-ring



ENABLE CONDITION

Secondary Parameters Enable Conditions
None



GENERAL DRIVING CYCLE

Always perform the diagnosis continuously.

DIAGNOSTIC METHOD

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

Judgment Value

Malfunction Criteria Threshold Value
Output voltage

≥ 4.921 V



Time Needed for Diagnosis: 0.5 seconds

Malfunction Indicator Light Illumination: Illuminates as soon as the malfunction occurs.

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)