Toyota Avalon (XX50): Control Module Internal Temperature Sensor/Intake Air Temperature Sensor Signal Compare Failure (P111C62). Camshaft Position "A" Actuator Bank 1 General Electrical Failure (P001001). Manifold Absolute

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual / Engine / A25a-fxs Engine Control / Sfi System / Control Module Internal Temperature Sensor/Intake Air Temperature Sensor Signal Compare Failure (P111C62). Camshaft Position "A" Actuator Bank 1 General Electrical Failure (P001001). Manifold Absolute

Control Module Internal Temperature Sensor/Intake Air Temperature Sensor Signal Compare Failure (P111C62)

DESCRIPTION

The engine has an ECM internal temperature sensor and intake air temperature sensor.

The resistance of a thermistor within the ECM internal temperature sensor and intake air temperature sensor increases as the temperature decreases and decreases as the temperature increases.

The voltage monitored by the ECM changes in accordance with the change in the resistance of the thermistor.

The ECM performs control based on these voltages.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Memory	Note
P111C62	Control Module Internal Temperature Sensor/Intake Air Temperature Sensor Signal Compare Failure	All of the following conditions are met (2 trip detection logic): The auxiliary battery voltage is 8 V or higher. 7 hours or more have elapsed since the engine stopped on the previous trip. 0.5 seconds or more after power switch is turned to on (IG). Either of the following conditions is met: The minimum ECM internal temperature is -10°C (14°F) or higher. The minimum intake air temperature is -10°C (14°F) or higher. The difference between the readings of the ECM internal temperature and intake air temperature is higher than 20°C (36°F).	Intake air temperature sensor (mass air flow meter sub-assembly) ECM (ECM internal temperature sensor)	Comes on	DTC stored	SAE Code: P111C

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

Note

P111C62

Control Module Internal Temperature Sensor/Intake Air Temperature Sensor Signal Compare Failure

All of the following conditions are met (2 trip detection logic):

The auxiliary battery voltage is 8 V or higher.
7 hours or more have elapsed since the engine stopped on the previous trip.
0.5 seconds or more after power switch is turned to on (IG).
Either of the following conditions is met:
1. The minimum ECM internal temperature is -10°C (14°F) or higher.
2. The minimum intake air temperature is -10°C (14°F) or higher.
The difference between the readings of the ECM internal temperature and intake air temperature is higher than 20°C (36°F).

Intake air temperature sensor (mass air flow meter sub-assembly)
ECM (ECM internal temperature sensor)

Comes on

DTC stored

SAE Code: P111C

Related Data List

DTC No.	Data List
P111C62	Intake Air Temperature
P111C62	Ambient Temperature

HINT:

Waiting is required to prevent the temperature of the engine from affecting the readings. If the engine has been operated recently, it is not possible to accurately compare the readings.
For diagnosis, in order to duplicate the detection conditions of the DTC, it is necessary to park the vehicle for 7 hours. Parking the vehicle for 7 hours ensures that the actual temperature of the ECM internal temperature and intake air temperature (for mass airflow meter sub-assembly) are very similar. When the vehicle has been parked for less than 7 hours, differences in the readings may exist, but this does not necessarily indicate a fault.

MONITOR DESCRIPTION

6, 6.5 and 7 hours after the engine has stopped, the ECM monitors the voltage of the ECM internal temperature sensor and intake air temperature sensor.

If the difference between the readings of the ECM internal temperature and intake air temperature is more than 20°C (36°F), the ECM determines that there is a malfunction in the ECM internal temperature sensor circuit or intake air temperature sensor circuit and stores a DTC and illuminates the MIL.

MONITOR STRATEGY

Related DTCs	P111C: Intake air temperature / engine control module internal temperature sensor correlation
Required Sensors/Components (Main)	Intake air temperature sensor Engine control module internal temperature sensor
Required Sensors/Components (Related)	-
Frequency of Operation	Once per driving cycle
Duration	-
MIL Operation	2 driving cycles
Sequence of Operation	None

TYPICAL ENABLING CONDITIONS

All of the following conditions are met	-
Power switch	Off
Engine	Stall
Soak time	6, 6.5 and 7 hours
Time after ECM power on	0.5 seconds or more
One of the following conditions is met	(a) or (b)
(a) Engine control module internal temperature	-10°C (14°F) or higher
(b) Intake air temperature	-10°C (14°F) or higher
Engine control module internal temperature sensor circuit fail (P06AD, P06AE)	Not detected
Intake air temperature sensor circuit fail (P0112, P0113)	Not detected
Soak timer fail (P2610)	Not detected
Auxiliary battery voltage	8 V or higher

TYPICAL MALFUNCTION THRESHOLDS

Deviated engine control module internal temperature and intake air temperature

Less than -20°C (-36°F), or higher than 20°C (36°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.
With the engine stopped, leave the vehicle as is for 7.5 hours or more [A].
Turn the power switch on (IG).
Turn the Techstream on.
Wait 1 seconds [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: P111C62.

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.
If the judgment result is INCOMPLETE, perform steps [A] through [C] again.
[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.

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 ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P111C62)

(a) Connect the Techstream to the DLC3.

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

(d) Enter the following menus: Powertrain / Engine / Trouble Codes.

(e) Read the DTCs and record the Freeze Frame Data.

Powertrain > Engine > Trouble Codes

Result	Proceed to
DTC P111C62 is output	A
DTC P111C62 and other DTCs are output	B

HINT:

If any DTCs other than P111C62 are output, troubleshoot those DTCs first.

GO TO DTC CHART

2.	CHECK FREEZE FRAME DATA (INTAKE AIR TEMPERATURE AND AMBIENT TEMPERATURE)

(a) Connect the Techstream to the DLC3.

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

(d) Using the Techstream, read the values displayed in the Freeze Frame Data recorded in step 1.

Powertrain > Engine > DTC(P111C62) > Freeze Frame Data

Tester Display
Intake Air Temperature
Ambient Temperature

(e) Read the value displayed on the Techstream.

Standard:

Difference between the Intake Air Temperature and the Ambient Temperature is within 15°C (27°F).

HINT:

When the engine is cold, the value of the intake air temperature, ECM internal temperature and ambient temperature should be approximately the same.
Perform "Inspection After Repair" after replacing the mass air flow meter sub-assembly.
Click here

REPLACE ECM

REPLACE MASS AIR FLOW METER SUB-ASSEMBLY

Camshaft Position "A" Actuator Bank 1 General Electrical Failure (P001001)

DESCRIPTION

The VVT-iE system adjusts the intake valve timing using a motor. Compared to conventional hydraulic VVT systems, the valve timing can be adjusted within a wider range and can be retarded more when starting the engine. As the VVT-iE system can operate at low engine speeds and when the engine is cold, lower emissions, increased engine power and fuel economy and enhanced startability have been achieved.

If the cam timing control motor with EDU assembly is stuck to the advanced side, the valve overlap will be long and affect the internal EGR. This may lead to poor combustion, rough idling or engine stall.
If the cam timing control motor with EDU assembly is stuck near the most retarded angle (Atkinson cycle), depending on the vehicle conditions, sufficient intake air may not be obtained, causing a lack of power.

Part and Terminal Name	Function
Cam timing control motor with EDU assembly	Through its electric motor, operates camshaft timing gear assembly. Internal driver detects and performs malfunction diagnosis of motor control, motor speed and rotation direction.
Camshaft timing gear assembly	Changes valve timing by rotating camshaft timing gear.
ECM	Outputs target speed and motor rotation direction in response to driving conditions.
VB1	Power supply (when power switch is on (IG), auxiliary battery voltage is 12 V or higher)
GND	Power supply ground
VTP	Inputs motor activation signal from ECM.
VTS	Outputs actual motor speed.
VTD	Outputs actual rotation direction.
VTM	Outputs malfunction diagnosis results as a duty ratio. Open circuit in VTP and VTM Normal Internal malfunction in driver Malfunction in motor rotation sensor of driver

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Memory	Note
P001001	Camshaft Position "A" Actuator Bank 1 General Electrical Failure	One of the following conditions is met for 3 seconds or more (1 trip detection logic). Cam timing control motor IC has overheated. Open in cam timing control motor circuit. Overcurrent is detected in cam timing control motor.	Cam timing control motor with EDU assembly Camshaft timing gear assembly	Comes on	DTC stored	SAE Code: P0010

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

Note

P001001

Camshaft Position "A" Actuator Bank 1 General Electrical Failure

One of the following conditions is met for 3 seconds or more (1 trip detection logic).

Cam timing control motor IC has overheated.
Open in cam timing control motor circuit.
Overcurrent is detected in cam timing control motor.

Cam timing control motor with EDU assembly
Camshaft timing gear assembly

Comes on

DTC stored

SAE Code: P0010

Symptoms and Fail-safe Operation During Cam Timing Control Motor Malfunction

Vehicle Condition	Fail-Safe
Engine difficult to start Lack of power	The cam timing control motor with EDU assembly is operated to the most retarded position.

MONITOR DESCRIPTION

This DTC is output when an IC overheat malfunction or an overcurrent malfunction is detected in the cam timing control motor with EDU assembly. The cam timing control motor with EDU assembly is equipped with a self diagnostic function, which is used to output diagnosis signals (VTM) to the ECM. If the ECM receives a motor driver interior malfunction signal, the ECM will illuminate the MIL and store this DTC.

MONITOR STRATEGY

Related DTCs	P0010: Camshaft position actuator (motor drive VVT system) range check
Required Sensors/Components (Main)	Cam timing control motor with EDU assembly
Required Sensors/Components (Related)	-
Frequency of Operation	Continuous
Duration	3 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	11 V or higher
Power switch	On (IG)
Engine speed	100 rpm or higher

TYPICAL MALFUNCTION THRESHOLDS

"Camshaft position actuator error" from motor drive VVT system control module

Received

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 warm it up (until the engine coolant temperature 75°C (167°F) or higher) with all the accessories switched off [A].
Idle the engine for 10 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: P001001.

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 has a malfunction.
If the judgment result is INCOMPLETE, perform steps [A] through [C] again.
[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.

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.	INSPECT CAMSHAFT TIMING GEAR ASSEMBLY

*1	Camshaft Timing Gear Assembly
*2	Eccentric Shaft

(a) Remove the cam timing control motor with EDU assembly.

Click here

(b) Check if the eccentric shaft of the camshaft timing gear assembly rotates smoothly.

NOTICE:

If the camshaft is at a position where a valve is about to open, the eccentric shaft may become difficult to rotate.

OK:

Rotates smoothly.

HINT:

Perform "Inspection After Repair" after replacing the camshaft timing gear assembly, or removing or replacing the cam timing control motor with EDU assembly.

Click here

REPLACE CAM TIMING CONTROL MOTOR WITH EDU ASSEMBLY

REPLACE CAMSHAFT TIMING GEAR ASSEMBLY

Manifold Absolute Pressure / Barometric Pressure Sensor Signal Stuck in Range (P01052A)

DESCRIPTION

Refer to DTC P010511.

Click here

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Memory	Note
P01052A	Manifold Absolute Pressure / Barometric Pressure Sensor Signal Stuck in Range	Intake manifold pressure measured after engine start drops by less than 3 kPa [0.4 psi] compared to the intake manifold pressure (atmospheric pressure) measured before engine start (2 trip detection logic).	Intake system Manifold absolute pressure sensor	Comes on	DTC stored	SAE Code: P0106

MONITOR DESCRIPTION

When the intake manifold pressure measured after engine start drops by less than 3 kPa [0.4 psi] compared to the intake manifold pressure (atmospheric pressure) measured before engine start, the ECM interprets this as a malfunction of the manifold absolute pressure sensor and stores DTC P01052A.

MONITOR STRATEGY

Related DTCs	P0106: Manifold absolute pressure sensor stuck monitoring
Required Sensors/Components (Main)	Manifold absolute pressure sensor
Required Sensors/Components (Related)	-
Frequency of Operation	Continuous
Duration	6 seconds
MIL Operation	2 driving cycles
Sequence of Operation	None

TYPICAL ENABLING CONDITIONS

Monitor runs whenever the following DTCs are not stored	P0010, P1360, P1362, P1364, P1366, P2614 (Motor drive VVT system control module) P0011 (VVT system - advance) P0012 (VVT system - retard) P0014 (Exhaust VVT system - advance) P0015 (Exhaust VVT system - retard) P0016 (VVT system - misalignment) P0017 (Exhaust VVT system - misalignment) P0107, P0108 (Manifold absolute pressure) P0112, P0113 (Intake air temperature sensor) P0117, P0118 (Engine coolant temperature sensor) P0121, P0122, P0123, P0222, P0223, P2135 (Throttle position sensor) P0125 (Insufficient coolant temperature for closed loop fuel control) P0335, P0337, P0338 (Crankshaft position sensor) P0340, P0342, P0343 (Camshaft position sensor) P0365, P0367, P0368 (Exhaust camshaft position sensor) P0401 (EGR system (closed)) P0489, P0490 (EGR control circuit) P106A (Evaporative emission control system pressure sensor - manifold pressure sensor correlation)
Auxiliary battery voltage	10.5 V or higher
Engine coolant temperature	30°C (86°F) or higher
Intake air temperature	-10°C (14°F) or higher
Engine speed	900 rpm or higher
Throttle valve	Close
EGR valve	Close
Atmospheric pressure	76 kPa(abs) [11 psi(abs)] or higher

TYPICAL MALFUNCTION THRESHOLDS

Difference between intake manifold absolute pressure and atmospheric pressure

Higher than -3 kPa [-0.4 psi]

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 warm it up until the engine coolant temperature is 75°C (167°F) or higher [A].
Idle the engine for 10 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: P01052A.

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.
If the judgment result is INCOMPLETE, perform steps [A] through [C] again.
[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.

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 ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P01052A)

(a) Connect the Techstream to the DLC3.

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

(d) Enter the following menus: Powertrain / Engine / Trouble Codes.

(e) Read the DTCs.

Powertrain > Engine > Trouble Codes

Result	Proceed to
DTC P01052A is output	A
DTC P01052A and other DTCs are output	B

HINT:

If any DTCs other than P01052A are output, troubleshoot those DTCs first.

GO TO DTC CHART

2.	READ VALUE USING TECHSTREAM (INTAKE MANIFOLD ABSOLUTE PRESSURE)

(a) Connect the Techstream to the DLC3.

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

(d) Enter the following menus: Powertrain / Engine / Data List / Intake Manifold Absolute Pressure.

Powertrain > Engine > Data List

Tester Display
Intake Manifold Absolute Pressure

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

(f) Put the engine in Inspection Mode (Maintenance Mode).

Powertrain > Hybrid Control > Utility

Tester Display
Inspection Mode

(g) Start the engine.

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

Standard:

Engine Condition	Intake Manifold Absolute Pressure
Power switch on (IG)	80 to 110 kPa (11.6 to 15.95 psi)
Idling	20 to 40 kPa (2.9 to 5.8 psi)

CHECK FOR INTERMITTENT PROBLEMS

3.	CHECK INTAKE SYSTEM

(a) Check the intake system for vacuum leaks.

Click here

OK:

No leaks from intake system.

HINT:

Perform "Inspection After Repair" after repairing or replacing the intake system.

Click here

REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR

REPAIR OR REPLACE INTAKE SYSTEM

Evaporative Emission System Pressure / Intake Air Pressure Signal Compare Failure (P106A62,P106C62). Fuel Rail Pressure Sensor (Low) Circuit Short to Ground (P107A11). Fuel Rail Pressure Sensor (Low)

Camshaft Position "A" - Timing Over-Advanced or System Performance Bank 1 (P001100). Intake Air Temperature Sensor 1 Bank 1 Signal Stuck in Range (P01102A). Engine Coolant Temperature Sensor 1 Signal

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