DESCRIPTION
The E.F.I. vacuum sensor assembly installed to the intake manifold detects the intake manifold pressure using a built-in sensor.
An atmospheric pressure sensor is built into the ECM. When the engine is stopped, the value of the E.F.I. vacuum sensor assembly and atmospheric pressure sensor will be approximately the same as the atmospheric pressure.
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
MIL | Note |
---|---|---|---|---|---|
P006900 | Manifold Absolute Pressure - Barometric Pressure Correlation |
Difference between atmospheric pressure value of the absolute pressure sensor and atmospheric pressure sensor is higher than threshold value (2 trip detection logic). |
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MONITOR DESCRIPTION
Approximately 50 minutes after the ignition switch is turned off, the soak timer is activated and the values of the E.F.I. vacuum sensor assembly and atmospheric pressure sensor are compared. If the difference between the values of the E.F.I. vacuum sensor assembly and atmospheric pressure sensor is higher than a threshold value in consecutive driving cycles, the ECM will store this DTC.
MONITOR STRATEGY
Related DTCs | P0069: E.F.I. vacuum sensor assembly/Atmospheric pressure sensor correlation |
Required Sensors/Components (Main) | E.F.I. vacuum sensor assembly ECM |
Required Sensors/Components (Related) |
Mass air flow meter sub-assembly Engine coolant temperature sensor |
Frequency of Operation | Once per driving cycle |
Duration | 3 times |
MIL Operation | 2 driving cycles |
Sequence of Operation | None |
TYPICAL ENABLING CONDITIONS
All of the following conditions are met |
- |
Engine coolant temperature |
-10°C (14°F) or higher |
Intake air temperature |
-10°C (14°F) or higher |
Atmospheric pressure sensor circuit fail (P2228, P2229) |
Not detected |
E.F.I. vacuum sensor assembly circuit fail (P0107, P0108) |
Not detected |
Engine coolant temperature sensor circuit fail (P0117, P0118) |
Not detected |
Intake air temperature sensor circuit fail (P0112, P0113) |
Not detected |
Engine | Stall |
Ignition switch | Off |
Soak time | 50 minutes |
Time after ECM power on |
60 to 65.625 seconds |
Auxiliary battery voltage |
8 V or higher |
TYPICAL MALFUNCTION THRESHOLDS
Atmospheric pressure and manifold absolute pressure deviation |
Higher than 15.297 kPa (2.218 psi) |
CONFIRMATION DRIVING PATTERN
HINT:
Click here
Click here
HINT:
GTS Display |
Description |
---|---|
NORMAL |
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ABNORMAL |
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INCOMPLETE |
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HINT:
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
CAUTION / NOTICE / HINT
NOTICE:
Click here
(Select Powertrain in Health Check and then check the time stamp data.)
Click here
HINT:
Read freeze frame data using the GTS. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
PROCEDURE
1. |
CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P006900) |
(a) Read the DTCs.
Powertrain > Engine > Trouble Codes
Result | Proceed to |
---|---|
DTC P006900 is output |
A |
DTC P006900 and other DTCs are output |
B |
HINT:
If any DTCs other than P006900 are output, troubleshoot those DTCs first.
B | GO TO DTC CHART |
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2. |
READ VALUE USING GTS (INTAKE MANIFOLD ABSOLUTE PRESSURE) |
(a) Turn the ignition switch off and wait for at least 50 minutes.
(b) Enter the following menus.
Powertrain > Engine > Data List
Tester Display |
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Intake Manifold Absolute Pressure |
(c) Using the following table, determine the normal atmospheric pressure for the current altitude and temperature.
HINT:
(d) Compare the value of the Data List item Intake Manifold Absolute Pressure with the actual atmospheric pressure.
Result | Proceed to |
---|---|
Approximately the same as the actual atmospheric pressure |
A |
Not approximately the same as the actual atmospheric pressure |
B |
B | REPLACE E.F.I. VACUUM SENSOR ASSEMBLY |
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3. |
READ VALUE USING GTS (ATMOSPHERIC PRESSURE) |
(a) Enter the following menus.
Powertrain > Engine > Data List
Tester Display |
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Atmospheric Pressure |
(b) Using the following table, determine the normal atmospheric pressure for the current altitude and temperature.
HINT:
(c) Compare the value of the Data List item Atmospheric Pressure with the actual atmospheric pressure.
Result | Proceed to |
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Approximately the same as the actual atmospheric pressure |
A |
Not approximately the same as the actual atmospheric pressure |
B |
A | CHECK FOR INTERMITTENT PROBLEMS |
B | REPLACE ECM |