P010511

DTC Code	DTC Name
P010511	Manifold Absolute Pressure / Barometric Pressure Sensor Circuit Short to Ground

DESCRIPTION

The manifold absolute pressure sensor detects the intake manifold pressure as a change in voltage. The ECM calculates the intake manifold pressure based on this voltage. The ECM calculates the EGR valve assembly and purge VSV opening amount according to changes in the intake manifold pressure and also detects malfunctions of the manifold absolute pressure sensor using these changes in pressure.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Memory	Note
P010511	Manifold Absolute Pressure / Barometric Pressure Sensor Circuit Short to Ground	The manifold absolute pressure sensor output voltage is less than 0.5 V for 0.5 seconds or more (1 trip detection logic).	Open or short in manifold absolute pressure sensor circuit Manifold absolute pressure sensor ECM	Comes on	DTC stored	SAE: P0107

Tech Tips

When a DTC is output, check the Data List item "Intake Manifold Absolute Pressure" using the GTS.

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DTC No.	Intake Manifold Absolute Pressure	Malfunction
P010511	Approximately 0 kPa (0 psi)	Short to ground in PIM circuit Short in PIM to EPIM circuit Open in VCPM circuit

If the Data List value is normal it may be due to a temporary recovery from the malfunction condition. Check for intermittent problems.

MONITOR DESCRIPTION

The ECM monitors the manifold absolute pressure sensor voltage and uses this value to calculate the intake manifold pressure. When the manifold absolute pressure sensor output voltage deviates from the normal operating range, the ECM interprets this as a malfunction in the manifold absolute pressure sensor circuit, illuminates the MIL and stores a DTC.

Example:

If the manifold absolute pressure sensor output voltage is less than 0.5 V for 0.5 seconds or more, the ECM stores this DTC.

MONITOR STRATEGY

Frequency of Operation

Continuous

CONFIRMATION DRIVING PATTERN

Connect the GTS to the DLC3.
Turn the power switch on (IG).
Turn the GTS on.
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the power switch off and wait for at least 30 seconds.
Turn the power switch on (IG).
Turn the GTS on.
Put the engine in Inspection Mode (2WD for measuring Exhaust Gas).

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Start the engine and wait 5 seconds or more.
Enter the following menus: Powertrain / Engine / Trouble Codes.
Read the pending DTCs.
Tech Tips
- If a pending DTC is output, the system is malfunctioning.
- If a pending DTC is not output, perform the following procedure.
Enter the following menus: Powertrain / Engine / Utility / All Readiness.
Input the DTC: P010511.

Check the DTC judgment result.

GTS Display	Description
NORMAL	DTC judgment completed System normal
ABNORMAL	DTC judgment completed System abnormal
INCOMPLETE	DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions

Tech Tips

If the judgment result shows NORMAL, the system is normal.
If the judgment result shows ABNORMAL, the system is malfunctioning.

WIRING DIAGRAM


*a	Manifold Absolute Pressure Sensor

CAUTION / NOTICE / HINT

Note

Vehicle Control History may be stored in the hybrid vehicle control ECU if the engine is malfunctioning. Certain vehicle condition information is recorded when Vehicle Control History is stored. Reading the vehicle conditions recorded in both the freeze frame data and Vehicle Control History can be useful for troubleshooting.

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(Select Powertrain in Health Check and then check the time stamp data.)

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If any "Engine Malfunction" Vehicle Control History item has been stored in the hybrid vehicle control ECU, make sure to clear it. However, as all Vehicle Control History items are cleared simultaneously, if any Vehicle Control History items other than "Engine Malfunction" are stored, make sure to perform any troubleshooting for them before clearing Vehicle Control History.

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Tech Tips

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

CHECK HARNESS AND CONNECTOR

*a	Front view of wire harness connector (to Manifold Absolute Pressure Sensor)

Tech Tips

Make sure that the connector is properly connected. If it is not, securely connect it and check for DTCs again.

Disconnect the manifold absolute pressure sensor connector.
Turn the power switch on (IG).

Measure the voltage according to the value(s) in the table below.

Standard Voltage

Tester Connection	Condition	Specified Condition
G15-3 (VC) - G15-2 (E2)	Power switch on (IG)	4.75 to 5.25 V
G15-1 (PIM) - G15-2 (E2)	Power switch on (IG)	3.0 to 5.0 V

Turn the power switch off and wait for at least 30 seconds.

Measure the resistance according to the value(s) in the table below.

Standard Resistance

Tester Connection	Condition	Specified Condition
G15-3 (VC) - G15-1 (PIM)	Power switch off	171 to 189 kΩ

Result

Proceed to
OK
NG

OK

REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR Click here

NG

CHECK HARNESS AND CONNECTOR (MANIFOLD ABSOLUTE PRESSURE SENSOR - ECM)

Disconnect the manifold absolute pressure sensor connector.
Disconnect the ECM connector.

Measure the resistance according to the value(s) in the table below.

Standard Resistance

Tester Connection	Condition	Specified Condition
G15-3 (VC) - G1-77 (VCPM)	Always	Below 1 Ω
G15-3 (VC) or G1-77 (VCPM) - Body ground and other terminals	Always	10 kΩ or higher
G15-1 (PIM) or G1-78 (PIM) - Body ground and other terminals	Always	10 kΩ or higher

Result

Proceed to
OK
NG

OK

REPLACE ECM Click here

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

SFI SYSTEM(w/o Canister Pump Module), Diagnostic DTC:P010511