Toyota Avalon (XX50): Manifold Absolute Pressure / Barometric Pressure Sensor Circuit Short to Ground (P010511). Manifold Absolute Pressure / Barometric Pressure Sensor Circuit Short to Battery or Open (P010515). Intake Ai

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual / Engine / A25a-fxs Engine Control / Sfi System / Manifold Absolute Pressure / Barometric Pressure Sensor Circuit Short to Ground (P010511). Manifold Absolute Pressure / Barometric Pressure Sensor Circuit Short to Battery or Open (P010515). Intake Ai

Manifold Absolute Pressure / Barometric Pressure Sensor Circuit Short to Ground (P010511)

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 Code: P0107

HINT:

When this DTC is output, check the intake manifold absolute pressure in the Data List. Enter the following menus: Powertrain / Engine / Data List / Intake Manifold Absolute Pressure.

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.

Click here

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

Related DTCs	P0107: Manifold absolute pressure sensor range check (low voltage)
Required Sensors/Components (Main)	Manifold absolute pressure sensor
Required Sensors/Components (Related)	-
Frequency of Operation	Continuous
Duration	0.5 seconds
MIL Operation	Immediate
Sequence of Operation	None

TYPICAL ENABLING CONDITIONS

Monitor runs whenever the following DTCs are not stored	None
All of the following conditions are met	-
Auxiliary battery voltage	8 V or higher
Power switch	On (IG)
Time after power switch off to on (IG)	0.5 seconds or more
Time after starter on to off	More than 2 seconds

TYPICAL MALFUNCTION THRESHOLDS

Manifold absolute pressure sensor voltage (Manifold absolute pressure)

Less than 0.5 V (Less than 0 kPa(abs) [0 psi(abs)])

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Turn the Techstream 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 Techstream on.
Put the engine in Inspection Mode (Maintenance Mode).
Click here
Start the engine and wait 5 seconds or more [A].
Enter the following menus: Powertrain / Engine / Trouble Codes [B].
Read the pending DTCs.
HINT:
- 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.

Techstream 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

HINT:

If the judgment result is NORMAL, the system is normal.
If the judgment result is ABNORMAL, the system is malfunctioning.
[A] to [B]: Normal judgment procedure.
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
When clearing the permanent DTCs, do not disconnect the cable from the auxiliary battery terminal or attempt to clear the DTCs during this procedure, as doing so will clear the universal trip and normal judgment histories.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Vehicle Control History may be stored in the hybrid vehicle control ECU assembly 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.
Click here

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

Click here
If any "Engine Malfunction" Vehicle Control History item has been stored in the hybrid vehicle control ECU assembly, 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.
Click here

HINT:

Read Freeze Frame Data using the Techstream. 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 HARNESS AND CONNECTOR

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

HINT:

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

(a) Disconnect the manifold absolute pressure sensor connector.

(b) Turn the power switch on (IG).

Standard Voltage:

Tester Connection	Condition	Specified Condition
C26-3 (VC) - C26-1 (E2)	Power switch on (IG)	4.75 to 5.25 V
C26-2 (PIM) - C26-1 (E2)	Power switch on (IG)	1.2 to 5.25 V

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

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
C26-3 (VC) - C26-2 (PIM)	Power switch off	171 to 189 kΩ

REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR

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

(a) Disconnect the manifold absolute pressure sensor connector.

(b) Disconnect the ECM connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
C26-3 (VC) - C55-121 (VCPM)	Always	Below 1 Ω
C26-2 (PIM) or C55-120 (PIM) - Body ground and other terminals	Always	10 kΩ or higher

REPLACE ECM

REPAIR OR REPLACE HARNESS OR CONNECTOR

Manifold Absolute Pressure / Barometric Pressure Sensor Circuit Short to Battery or Open (P010515)

DESCRIPTION

Refer to DTC P010511.

Click here

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Memory	Note
P010515	Manifold Absolute Pressure / Barometric Pressure Sensor Circuit Short to Battery or Open	The manifold absolute pressure sensor output voltage is higher than 4.5 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 Code: P0108

HINT:

When this DTC is output, check the intake manifold absolute pressure in the Data List. Enter the following menus: Powertrain / Engine / Data List / Intake Manifold Absolute Pressure.

DTC No.	Intake Manifold Absolute Pressure	Malfunction
P010515	Higher than 130 kPa (18.85 psi)	Short in VCPM to PIM circuit Open in PIM circuit Open in EPIM circuit

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

Click here

MONITOR DESCRIPTION

Example:

If the manifold absolute pressure sensor output voltage is higher than 4.5 V for 0.5 seconds or more, the ECM stores this DTC.

MONITOR STRATEGY

Related DTCs	P0108: Manifold absolute pressure sensor range check (high voltage)
Required Sensors/Components (Main)	Manifold absolute pressure sensor
Required Sensors/Components (Related)	-
Frequency of Operation	Continuous
Duration	0.5 seconds
MIL Operation	Immediate
Sequence of Operation	None

TYPICAL ENABLING CONDITIONS

Monitor runs whenever the following DTCs are not stored	None
All of the following conditions are met	-
Auxiliary battery voltage	8 V or higher
Power switch	On (IG)
Time after power switch off to on (IG)	0.5 seconds or more
Time after starter on to off	More than 2 seconds

TYPICAL MALFUNCTION THRESHOLDS

Manifold absolute pressure sensor voltage (Manifold absolute pressure)

Higher than 4.5 V (Higher than 130 kPa(abs) [19 psi(abs)])

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Turn the Techstream on.
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the power and wait for at least 30 seconds.
Turn the power switch on (IG).
Turn the Techstream on.
Put the engine in Inspection Mode (Maintenance Mode).
Click here
Start the engine and wait 5 seconds or more [A].
Enter the following menus: Powertrain / Engine / Trouble Codes [B].
Read the pending DTCs.
HINT:
- 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: P010515.

Check the DTC judgment result.

Techstream 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

HINT:

If the judgment result is NORMAL, the system is normal.
If the judgment result is ABNORMAL, the system is malfunctioning.
[A] to [B]: Normal judgment procedure.
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
When clearing the permanent DTCs, do not disconnect the cable from the auxiliary battery terminal or attempt to clear the DTCs during this procedure, as doing so will clear the universal trip and normal judgment histories.

WIRING DIAGRAM

Refer to DTC P010511.

Click here

CAUTION / NOTICE / HINT

NOTICE:

Vehicle Control History may be stored in the hybrid vehicle control ECU assembly 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.
Click here

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

Click here
If any "Engine Malfunction" Vehicle Control History item has been stored in the hybrid vehicle control ECU assembly, 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.
Click here

HINT:

PROCEDURE

1.	CHECK HARNESS AND CONNECTOR

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

HINT:

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

(a) Disconnect the manifold absolute pressure sensor connector.

(b) Turn the power switch on (IG).

Standard Voltage:

Tester Connection	Condition	Specified Condition
C26-3 (VC) - C26-1 (E2)	Power switch on (IG)	4.75 to 5.25 V
C26-2 (PIM) - C26-1 (E2)	Power switch on (IG)	1.2 to 5.25 V

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

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
C26-1 (E2) - Body ground	Power switch off	Below 1 Ω
C26-3 (VC) - C26-2 (PIM)	Power switch off	171 to 189 kΩ

REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR

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

(a) Disconnect the manifold absolute pressure sensor connector.

(b) Disconnect the ECM connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
C26-1 (E2) - C55-119 (EPIM)	Always	Below 1 Ω
C26-2 (PIM) - C55-120 (PIM)	Always	Below 1 Ω
C26-2 (PIM) or C55-120 (PIM) - Other terminals	Always	10 kΩ or higher

REPLACE ECM

REPAIR OR REPLACE HARNESS OR CONNECTOR

Intake Air Temperature Sensor 1 Bank 1 Circuit Short to Ground (P011011)

DESCRIPTION

The intake air temperature sensor, mounted on the mass air flow meter sub-assembly, monitors the intake air temperature. The intake air temperature sensor is a built-in thermistor with a resistance that varies according to the temperature of the intake air. When the intake air temperature is low, the resistance of the thermistor increases. When the temperature is high, the resistance drops. These variations in resistance are transmitted to the ECM as voltage changes (see Fig. 1).

The intake air temperature sensor is powered by a 5 V supply from the THA terminal of the ECM, via resistor R.

Resistor R and the intake air temperature sensor are connected in series. When the resistance value of the intake air temperature sensor changes, according to changes in the intake air temperature, the voltage at terminal THA also varies. Based on this signal, the ECM performs various checks andcompensations related to intake air temperature in the engine management system.

HINT:

When DTC P011011 is stored, the ECM enters fail-safe mode. During fail-safe mode, the intake air temperature is estimated to be 20°C (68°F) by the ECM. Fail-safe mode continues until a pass condition is detected, and the power switch is then turned off.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Memory	Note
P011011	Intake Air Temperature Sensor 1 Bank 1 Circuit Short to Ground	The intake air temperature sensor output voltage is less than 0.176 V for 0.5 seconds or more (1 trip detection logic).	Short in intake air temperature sensor circuit Intake air temperature sensor (mass air flow meter sub-assembly) ECM	Comes on	DTC stored	SAE Code: P0112

HINT:

When this DTC is output, check the intake air temperature in the Data List. Enter the following menus: Powertrain / Engine / Data List / Intake Air Temperature.

DTC No.	Intake Air Temperature	Malfunction
P011011	Higher than 128°C (262°F)	Short to ground in THA circuit

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

Click here

MONITOR DESCRIPTION

The ECM monitors the sensor voltage and uses this value to calculate the intake air temperature. When the sensor output voltage deviates from the normal operating range, the ECM interprets this as a malfunction in the intake air temperature sensor (mass air flow meter sub-assembly) circuit, illuminate the MIL and stores a DTC.

Example:

If the intake air temperature sensor output voltage is less than 0.176 V for 0.5 seconds or more, the ECM will illuminate the MIL and store this DTC.

MONITOR STRATEGY

Related DTCs	P0112: Intake air temperature sensor range check (low voltage)
Required Sensors/Components (Main)	Intake air temperature sensor (mass air flow meter sub-assembly)
Required Sensors/Components (Related)	-
Frequency of Operation	Continuous
Duration	0.5 seconds
MIL Operation	Immediate
Sequence of Operation	None

TYPICAL ENABLING CONDITIONS

Monitor runs whenever the following DTCs are not stored	None
Both of the following conditions are met	-
Auxiliary battery voltage	8 V or higher
Power switch	On (IG)

TYPICAL MALFUNCTION THRESHOLDS

Intake air temperature sensor voltage [Intake air temperature]

Less than 0.176 V [Higher than 128°C (262°F)]

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Turn the Techstream 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) [A].
Turn the Techstream on.
Wait 0.5 seconds or more [B].
Enter the following menus: Powertrain / Engine / Trouble Codes [C].
Read the pending DTCs.
HINT:
- 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: P011011.

Check the DTC judgment result.

Techstream 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

HINT:

If the judgment result is NORMAL, the system is normal.
If the judgment result is ABNORMAL, the system is malfunctioning.
[A] to [C]: Normal judgment procedure.
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
When clearing the permanent DTCs, do not disconnect the cable from the auxiliary battery terminal or attempt to clear the DTCs during this procedure, as doing so will clear the universal trip and normal judgment histories.

WIRING DIAGRAM

Refer to DTC P010012.

Click here

CAUTION / NOTICE / HINT

NOTICE:

Vehicle Control History may be stored in the hybrid vehicle control ECU assembly 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.
Click here

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

Click here
If any "Engine Malfunction" Vehicle Control History item has been stored in the hybrid vehicle control ECU assembly, 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.
Click here

HINT:

PROCEDURE

1.	READ VALUE USING TECHSTREAM (CHECK FOR SHORT IN WIRE HARNESS)

*1	Mass Air Flow Meter Sub-assembly
*2	ECM

(a) Disconnect the mass air flow meter sub-assembly connector.

(b) Connect the Techstream to the DLC3.

(d) Turn the Techstream on.

(e) Enter the following menus: Powertrain / Engine / Data List / Intake Air Temperature.

Powertrain > Engine > Data List

Tester Display
Intake Air Temperature

(f) According to the display on the Techstream, read the Data List.

OK:

Techstream Display	Specified Condition
Intake Air Temperature	-40°C (-40°F)

HINT:

Perform "Inspection After Repair" after replacing the mass air flow meter sub-assembly.

Click here

REPLACE MASS AIR FLOW METER SUB-ASSEMBLY

2.	CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY - ECM)

(a) Disconnect the mass air flow meter sub-assembly connector.

(b) Disconnect the ECM connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
C28-4 (THA) or C55-102 (THA) - Body ground and other terminals	Always	10 kΩ or higher

REPLACE ECM

REPAIR OR REPLACE HARNESS OR CONNECTOR

Fuel Rail / System Pressure - Too High (P008800). Mass or Volume Air Flow Sensor "A" Circuit Short to Battery (P010012,P010014). Mass or Volume Air Flow Sensor "A" Signal Plausibility Failure (P010064

Intake Air Temperature Sensor 1 Bank 1 Circuit Short to Battery or Open (P011015). Engine Coolant Temperature Sensor 1 Circuit Short to Ground (P011511). Engine Coolant Temperature Sensor 1 Circuit Sh

See More:

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Axle And Differential: Rear Axle Hub Bolt
Components COMPONENTS ILLUSTRATION *1 NO. 2 PARKING BRAKE WIRE ASSEMBLY *2 REAR AXLE HUB BOLT *3 REAR DISC *4 REAR DISC BRAKE CALIPER ASSEMBLY *5 REAR FLEXIBLE HOSE - - Tightening torque for "Major areas involving basic vehicle performance such as moving/turning/stopping": N*m (kgf*cm, ft.*lbf) ● ...